43 results on '"Favetta, M"'
Search Results
2. NEMO-\onde: a submarine station for real-time monitoring of acoustic background installed at 2000 m depth in the Mediterranean Sea
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The NEMO Collaboration, Cosentino, L., Favetta, M., Larosa, G., Pavan, G., Romeo, D. J., Privitera, S., and Speziale, F.
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Astrophysics - Abstract
The NEMO (NEutrino Mediterranean Observatory) Collaboration installed, 25 km E offshore the port of Catania (Sicily) at 2000 m depth, an underwater laboratory to perform long-term tests of prototypes and new technologies for an underwater high energy neutrino km$^3$-scale detector in the Mediterranean Sea. In this framework the collaboration deployed and successfully operated for about two years, starting form January 2005, an experimental apparatus for on-line monitoring of deep-sea noise. The station was equipped with 4 hydrophones and it is operational in the range 30 Hz - 43 kHz. This interval of frequencies matches the range suitable for the proposed acoustic detection technique of high energy neutrinos. Hydrophone signals were digitized underwater at 96 kHz sampling frequency and 24 bits resolution. A custom software was developed to record data on high resolution 4-channels digital audio file. This paper deals with the data analysis procedure and first results on the determination of sea noise sound pressure density curves. The stored data library, consisting of more than 2000 hours of recordings, is a unique tool to model underwater acoustic noise at large depth, to characterise its variations as a function of environmental parameters, biological sources and human activities (ship traffic, ...), and to determine the presence of cetaceans in the area., Comment: 25 pages (figures inside), submitted to Deep Sea Research I
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- 2008
3. Silicon nitride surfaces as active substrate for electrical DNA biosensors
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Petralia, S., Cosentino, T., Sinatra, F., Favetta, M., Fiorenza, P., Bongiorno, C., Sciuto, E.L., Conoci, S., and Libertino, S.
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- 2017
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4. Bioinspired controller for a robotic knee orthosis
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Petrarca, M, Bottoni, M, Favetta, M, Carniel, S, Castelli, E, Piscitelli, D, Summa, S, Petrarca, M, Bottoni, M, Favetta, M, Carniel, S, Castelli, E, Piscitelli, D, and Summa, S
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Motor control ,Neuro-rehabilitation ,Knee orthosi ,Equilibrium-point theory ,Gait ,Robotic - Abstract
Robotic wearable orthosis faces many challenges. A list, but not exhaustive, can include biomechanical coupling, wearability, intention detecting, functional coupling, energy autonomy, trajectory, and torque anticipation. Notably, from a rehabilitative perspective emerges the necessity to define the more proficient rule of interaction to induce learning processes or to support the function when the recovery limit is reached. This study aims to select the optimal solution among the available technologies. We developed an orthosis with a controller that follows the equilibrium-point hypothesis. Three experimental protocols test the transparency and the gait pattern implicit modification during the orthosis use.
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- 2022
5. WITHDRAWN: Gait control in Rett Syndrome: An explorative study
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Romano, A., Armando, M., Favetta, M., Minosse, S., Summa, S., Schirinzi, T., Castelli, E., and Petrarca, M.
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- 2021
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6. Generating a Minimal Set of Templates for the Hippocampal Region in MR Neuroimages
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Cataldo, R., Agrusti, A., De Nunzio, G., Carlà, A., De Mitri, I., Favetta, M., Quarta, M., Monno, L., Rei, L., and Fiorina, E.
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- 2013
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7. Spatio-temporal parameters of ataxia gait dataset obtained with the Kinect
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Summa, S., primary, Tartarisco, G., additional, Favetta, M., additional, Buzachis, A., additional, Romano, A., additional, Bernava, G.M., additional, Vasco, G., additional, Pioggia, G., additional, Petrarca, M., additional, Castelli, E., additional, Bertini, E., additional, and Schirinzi, T., additional
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- 2020
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8. Gait control in Rett Syndrome: an explorative study
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Romano, A., primary, Armando, M., additional, Favetta, M., additional, Minosse, S., additional, Summa, S., additional, Schirinzi, T., additional, Castelli, E., additional, and Petrarca, M., additional
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- 2019
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9. WITHDRAWN: Gait control in Rett Syndrome: An explorative study
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Romano, A., primary, Armando, M., additional, Favetta, M., additional, Minosse, S., additional, Summa, S., additional, Schirinzi, T., additional, Castelli, E., additional, and Petrarca, M., additional
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- 2019
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10. 293. Exploring the biomechanical constraints in different pathologies with gait analysis
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Minosse, S., primary, Pisano, A., additional, Petrarca, M., additional, Favetta, M., additional, Romano, A., additional, Summa, S., additional, and Castelli, E., additional
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- 2018
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11. Natural history of a cohort ofABCD1variant female carriers
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Schirinzi, T., primary, Vasco, G., additional, Aiello, C., additional, Rizzo, C., additional, Sancesario, A., additional, Romano, A., additional, Favetta, M., additional, Petrarca, M., additional, Paone, L., additional, Castelli, E., additional, Bertini, E. S., additional, and Cappa, M., additional
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- 2018
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12. Effects of a wearable proprioceptive stabilizer on kinematics and spatio-temporal gait parameters in young with genetic ataxias
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Romano, A., primary, Favetta, M., additional, Schirinzi, T., additional, Vasco, G., additional, Summa, S., additional, Minosse, S., additional, Castelli, E., additional, and Petrarca, M., additional
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- 2018
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13. P 166 - Use of 3D gait analysis to measure clinical outcome in a stiff person syndrome
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Romano, A., primary, Schirinzi, T., additional, Sancesario, A., additional, Favetta, M., additional, Summa, S., additional, Minosse, S., additional, Vasco, G., additional, Della Bella, G., additional, Castelli, E., additional, and Petrarca, M., additional
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- 2018
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14. Natural history of gait characteristics of a group of subjects with Duchenne muscular dystrophy
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Romano, A., primary, Petrarca, M., additional, Favetta, M., additional, Summa, S., additional, and Castelli, E., additional
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- 2017
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15. Gait changes after loss of weight on adolescent with severe obesity after surgery
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Summa, S., primary, Petrarca, M., additional, Adorisio, O.D., additional, Favetta, M., additional, Romano, A., additional, Carbonetti, R., additional, Pisano, A., additional, Carniel, S., additional, De Peppo, F., additional, and Castelli, E., additional
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- 2017
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16. Generating a minimal set of templates for the hippocampal region in MR neuroimages
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CATALDO, Rosella, DE NUNZIO, Giorgio, DE MITRI, Ivan, QUARTA, Maurizio, Agrusti, A, Carlà, A, Favetta, M, Monno, L, Rei, L, Fiorina, E, Alzheimer’s Disease Neuroimaging Initiative, Cataldo, Rosella, Agrusti, A, DE NUNZIO, Giorgio, Carlà, A, DE MITRI, Ivan, Favetta, M, Quarta, Maurizio, Monno, L, Rei, L, Fiorina, E, and Alzheimer’s Disease Neuroimaging, Initiative
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We detail a procedure for generating a set of templates for the hippocampal region in magnetic resonance (MR) images, representative of the clinical conditions of the population under investigation. METHODS: The first step is robust standardization of the intensity scale of brain MR images, belonging to patients with different degrees of neuropathology (Alzheimer's disease). So similar tissues have similar intensities, even across images coming from different sources. After the automatic extraction of the hippocampal region from a large dataset of images, we address template generation, choosing by clusterization methods a small number of the extracted regions. RESULTS: We assess that template generation is largely independent on the clusterization method and on the number and the clinical condition of the patients. The templates are chosen as the most representative images in a population. The estimation of the "minimum" number of templates for the hippocampal region can be proposed, using a metric based on the geometrical position of the extracted regions. CONCLUSIONS: This study describes a simple and easily reproducible procedure to generate templates for the hippocampal region. It can be generalized and applied to other brain regions, which may be relevant for neuroimaging studies.
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- 2013
17. Natural history of a cohort of ABCD1 variant female carriers.
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Schirinzi, T., Vasco, G., Aiello, C., Rizzo, C., Sancesario, A., Romano, A., Favetta, M., Petrarca, M., Paone, L., Castelli, E., Bertini, E. S., and Cappa, M.
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ADRENOLEUKODYSTROPHY ,CLINICAL trials ,MEDICAL care ,NEURODEGENERATION ,ATOMIC layer deposition - Abstract
Background and purpose: The therapeutic scenario of X‐linked adrenoleukodystrophy (X‐ALD) is rapidly changing. Whereas the disease is well characterized in men, the condition remains to be fully clarified in women carrying ATP binding cassette subfamily D member 1 (ABCD1) variants. Specifically, data on clinical progression are needed, in order to recommend any appropriate management. The objective of this study was to outline the natural history of a cohort of untreated ABCD1 heterozygous female carriers. Methods: Longitudinal data from a single‐center population of 60 carriers were retrospectively reviewed. Demographics, anthropometrics, serum very long chain fatty acid (VLCFA) levels, clinical parameters and the Adult ALD Clinical Score (AACS) were collected from every recorded visit in a 7‐year period and analyzed to define the phenotype modifications, to determine factors associated with clinical features, and to estimate the annual progression rate and the subsequent sample size for interventional trials. Results: Thirty‐two patients were eligible for the study, and 59.4% were symptomatic at baseline. Clinical severity worsens with age which increases risk of symptom onset, the cut‐off of 41 years being crucial for phenoconversion. VLCFA levels were not predictive and did not change over time. Symptomatic carriers were followed up for 3.45 ± 2.1 years. The AACS increased at an annual rate of 0.24 points. The estimated sample size for 30% reduction in annual progression at 80% power was 272. Conclusions: This study provides data on the natural disease progression of untreated ABCD1 heterozygous female carriers, demonstrating the relevance of aging. The estimated annual increase of the AACS will be useful for future interventional studies. [ABSTRACT FROM AUTHOR]
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- 2019
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18. Investigations of DNA damage induction and repair resulting from cellular exposure to high dose-rate pulsed proton beams
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Renis, M., primary, Borghesi, M., additional, Favetta, M., additional, Malfa, G., additional, Manti, L., additional, Romano, F., additional, Schettino, G., additional, Tomasello, B., additional, and Cirrone, G. A. P., additional
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- 2013
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19. A simple greywater treatment: Gravity filtration
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Favetta, M, Sivakumar, Muttucumaru, Favetta, M, and Sivakumar, Muttucumaru
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- 2007
20. Greywater Treatment using Direct Gravity Filtration
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Sivakumar, Muttucumaru, Favetta, M, Sivakumar, Muttucumaru, and Favetta, M
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- 2007
21. Network P2P for Exploring and Visualization of Proteomic Data: Possibility of Handling Data and Analysing Them under Different Perspectives
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Mercurio, G., primary, Maglio, S., additional, Agrusti, A., additional, Nunzio, G. De, additional, Cataldo, R., additional, Mitri, I. De, additional, Favetta, M., additional, Massafra, A., additional, Marsella, G., additional, Vergara, D., additional, Maffia, M., additional, Vasilateanu, A., additional, and Serbanati, L. D., additional
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- 2008
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22. Network P2P for exploring and visualization of proteomic data produced by two dimensional electrophoresis.
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Mercurio, G., Maglio, S., Agrusti, A., DeNunzio, G., Cataldo, R., DeMitri, I., Favetta, M., Massafra, A., Marsella, G., Vergara, D., and Maffia, M.
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- 2008
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23. Analisi di immagini di elettroforesi bidimensionale per la proteomica
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Maglio, S., Giorgio De Nunzio, Agrusti, A., Favetta, M., Massafra, A., S., Maglio, DE NUNZIO, Giorgio, A., Agrusti, M., Favetta, and A., Massafra
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Nell’articolo è illustrato un metodo di analisi di immagini di gel di elettroforesi bidimensionale per applicazioni di proteomica. Il metodo prevede la riduzione del rumore di fondo dell’immagine, la ricerca degli spot tramite identificazione dei minimi relativi, l’applicazione della watershed transform per la divisione dell’immagine in bacini, la parametrizzazione della forma degli spot per l’identificazione degli spot sovrapposti, lo studio di casi problematici che l’uso della watershed non riesce a risolvere.
24. Medical image analysis: methods and applications
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Castellano, M., Gargano, G., Carlo, F., Megna, R., Sabina Tangaro, Tarricone, G., Bosco, P., Camarlinghi, N., Favetta, M., and Bellotti, Roberto
25. Automatic analysis of medial temporal lobe region for theearly assessment of Alzheimer disease (poster No. C-2464)
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Giorgio De Nunzio, Chincarini, A., Favetta, M., Masecchia, S., Monno, L., Rei, L., Retico, A., Tangaro, S., DE NUNZIO, Giorgio, A., Chincarini, M., Favetta, S., Masecchia, L., Monno, L., Rei, A., Retico, and S., Tangaro
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Alzheimer Disease ,Hippocampus atrophy ,Image Analysis - Abstract
Purpose: The hippocampus, located in the medial temporal lobe (MTL), plays an essential role in learning and memory functions. Because of its frequent and early involvement in Alzheimer's disease (AD) and other neurodegenerative diseases, it is often targeted by both structural and functional imaging. Our aim is to increase the likelihood of early recognition and assessment of AD. Methods and Materials: We propose an approach that does not directly tackle the objective of hippocampal segmentation, but simply extracts from the right and left sides of a MR image two small fixed-size, parallelepiped-shaped sub images containing the hippocampi and adjacent structures (Hippocampal Boxes, HBs). We developed an automatic procedure for selecting an optimal number of HBs, starting from which we can extract both hippocampal formations in any MR image. We discriminate between controls and AD. This way MCI population can be evaluated and a prediction on the conversion to AD is made. Results: We extracted HBs from a set of 532 images from different sources, and developed a method to discriminate between converters and non converters to AD in a MCI population. The separation between Control and AD, measured as the area under the ROC curve, is 86,3%. For the Normal vs. Converted to AD cohorts, the area under the ROC curve is 88%. The forecast is checked against clinical follow up. Conclusion: The proposed approach consists in the possibility of automatically performing morphometric studies on the MTL. This procedure can quickly and reliably provide additional information in early AD diagnosis. The study has been established within the framework of the MAGIC-5 collaboration.
26. Action of bioindicator entomofauna sugarcane planted in between alleys native forest species
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Favetta, Marcela Marques da Silva, FAVETTA, M. M. S., and Margarido, Luiz Antonio Correia
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Bioindicadores ,Florestas nativas ,Aleias ,Cana-de-açúcar ,CIENCIAS AGRARIAS - Abstract
The present work aims to study the acquisition of environmental information through the analysis of insect fauna in an agroforestry system consisting of alleys native trees planted between strips of different widths cultivated with cane sugar. These are important complementary information for the commercial deployment of large areas of this agroforestry system that seeks to mitigate the undesirable impacts caused by sugar cane monoculture. The option for this type of analysis is linked to the practical and low cost, using simple equipment, apply without interfering with routine activities of production or the development of culture. Another aspect is the possibility of obtaining information in the short term, considering the insects are sensitive to environmental stimuli, numerous and capable of producing several generations in a short period of time. Besides that respond quickly to disturbances in their habitat features and changes in structure and function of ecosystems. Catches of the specimens were held bimonthly and lines of trees, and the tracks in culture for three complete cycles of cane sugar. We analyzed the interactions of these populations in relation to climatic aspects and between different environments formed by sugar cane planted between three different species of native trees; guapuruvu, cedar and yellow ipe. Were captured 84,644 specimens, and their records used in ecological analyzes. The results showed that initially environments formed by different combinations of tree-cane behaved differently. During studies of these environments were coalescing gradually showing a tendency to operate in the future as a single community without major conflicts. This would be a desirable feature about the purpose of implementing such agroforestry system. The spatial distribution of insect fauna occurred randomly in all environments studied. Environmental analysis with relatively simple methodology has generated consistent information. O presente trabalho tem como objetivo estudar a obtenção de informações ambientais através da análise da entomofauna em um sistema agroflorestal constituído de aleias de arvores nativas plantadas entre faixas de diferentes larguras cultivadas com cana-de-açúcar. Essas são informações complementares importantes para a implantação comercial de grandes áreas desse sistema agroflorestal que busca amenizar os impactos indesejáveis causados pela monocultura canavieira. A opção por esse tipo de análise está vinculada ao aspecto prático e de baixo custo, empregando equipamentos simples, aplicável sem interferir nas atividades rotineiras de produção ou no desenvolvimento da cultura. Outro aspecto é a possibilidade de obtenção de informações em curto prazo, considerando serem os insetos sensíveis a estímulos do meio, numerosos e capazes de produzir várias gerações em curto espaço de tempo. Alem de isso respondem rapidamente as perturbações nos recursos de seu habitat e as mudanças de estrutura e função dos ecossistemas. As capturas dos espécimes foram bimensais e realizadas nas linhas das arvores e, nas faixas da cultura, por três ciclos completos da cana-de-açúcar. Foram analisadas as interações dessas populações em relação a aspectos climáticos e entre os diferentes ambientes formados pela cana-de-açúcar plantada entre três diferentes espécies de árvores nativas; Guapuruvú, Cedro e Ipê Amarelo. Foram capturados 84.644 espécimes, e seus registros empregados nas análises ecológicas. Os resultados demonstraram que inicialmente os ambientes formados pelas diferentes combinações de arvore- cana comportaram-se de forma distinta. No decorrer dos estudos esses ambientes foram se aglutinando gradualmente apresentando uma tendência de funcionarem no futuro como uma comunidade única sem maiores conflitos. Essa seria uma característica desejável quanto ao objetivo da implantação desse tipo sistema agroflorestal. A distribuição espacial da entomofauna ocorreu ao acaso em todos os ambientes estudados. A análise ambiental com metodologia relativamente simples gerou informações consistentes.
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- 2013
27. ELIMED: a new hadron therapy concept based on laser driven ion beams
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Cirrone, GIUSEPPE ANTONIO PABLO, Margarone, Domenica, Maggiore, Mario, Anzalone, A, Borghesi, M, Jia, Sb, Bulanov, Ss, Bulanov, S, Carpinelli, M, Cavallaro, Salvatore, Cutroneo, PAOLA MARIA, Cuttone, Giacomo, Favetta, Marco, Gammino, S, Klimo, O, Manti, L, Korn, G, Malfa, Giuseppe, Limpouch, J, Musumarra, Agatino, Petrovic, I, Prokupek, J, Psikal, J, Ristic Fira, A, Renis, Marcella, Romano, Francesco Paolo, Romeno, F, Schettino, G, Schillaci, Francesco, Scuderi, Valentina, Stancampiano, C, Tramontana, Antonella, Ter Avetisyan, S, Tomasello, Barbara, Torrisi, Lorenzo, Tudisco, Salvatore, Velyhan, A., Cirrone, Gap, Margarone, D, Maggiore, M, Anzalone, A, Borghesi, M, Bijan Jia, S, Bulanov, S, Carpinell, Mi, Cavallaro, S, Cutroneo, M, Cuttone, G, Favetta, M, Gammino, S, Klimo, O, Manti, Lorenzo, Korn, G, La Malfa, G, Limpouch, J, Musumarra, A, Petrovic, I, Prokupek, J, Psikal, J, Ristic Fira, A, Renis, M, Romano, Fp, Romano, F, Schettino, G, Schillaci, F, Scuderi, V, Stancampiano, C, Tramontana, A, Ter Avetisyan, S, Tomasello, B, Torrisi, L, Tudisco, S, and Velyhan, A.
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Physics ,Ion beams ,Lasers ,Melanoma ,Radiation dosimetry ,Medicine ,Biology ,Chemistry ,Eye ,business.industry ,Context (language use) ,Laser acceleration ,Laser ,01 natural sciences ,3. Good health ,010305 fluids & plasmas ,law.invention ,Hadron therapy ,Optics ,Conceptual design ,Beamline ,law ,0103 physical sciences ,Energy spectrum ,Biological cell ,Aerospace engineering ,010306 general physics ,business ,Beam (structure) - Abstract
Laser accelerated proton beams have been proposed to be used in different research fields. A great interest has risen for the potential replacement of conventional accelerating machines with laser-based accelerators, and in particular for the development of new concepts of more compact and cheaper hadrontherapy centers. In this context the ELIMED (ELI MEDical applications) research project has been launched by INFN-LNS and ASCR-FZU researchers within the pan-European ELI-Beamlines facility framework. The ELIMED project aims to demonstrate the potential clinical applicability of optically accelerated proton beams and to realize a laser-accelerated ion transport beamline for multi-disciplinary user applications. In this framework the eye melanoma, as for instance the uveal melanoma normally treated with 62 MeV proton beams produced by standard accelerators, will be considered as a model system to demonstrate the potential clinical use of laser-driven protons in hadrontherapy, especially because of the limited constraints in terms of proton energy and irradiation geometry for this particular tumour treatment. Several challenges, starting from laser-target interaction and beam transport development up to dosimetry and radiobiology, need to be overcome in order to reach the ELIMED final goals. A crucial role will be played by the final design and realization of a transport beamline capable to provide ion beams with proper characteristics in terms of energy spectrum and angular distribution which will allow performing dosimetric tests and biological cell irradiation. A first prototype of the transport beamline has been already designed and other transport elements are under construction in order to perform a first experimental test with the TARANIS laser system by the end of 2013. A wide international collaboration among specialists of different disciplines like Physics, Biology, Chemistry, Medicine and medical doctors coming from Europe, Japan, and the US is growing up around the ELIMED project with the aim to work on the conceptual design, technical and experimental realization of this core beamline of the ELI Beamlines facility. © (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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- 2013
28. A scoping review of scientific concepts concerning motor recovery after stroke as employed in clinical trials.
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Favetta M, Romano A, Valè N, Cieslik B, Federico S, Girolami A, Mazzarotto D, Pregnolato G, Righetti A, Salvalaggio S, Castelli E, Smania N, Bargellesi S, Kiper P, and Petrarca M
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The scientific literature on poststroke rehabilitation is remarkably vast. Over the last decades, dozens of rehabilitation approaches have been investigated. However, sometimes it is challenging to trace new experimental interventions back to some of the known models of motor control and sensorimotor learning. This scoping review aimed to investigate motor control models' diffusion among the literature on motor recovery after stroke. We performed a literature search on Medline, Cochrane, Web of Science, Embase, and Scopus databases. The last search was conducted in September 2023. This scoping review included full-text articles published in English in peer-reviewed journals that provided rehabilitation interventions based on motor control or motor learning frameworks for at least one individual with stroke. For each study, we identified the theoretical framework the authors used to design the experimental treatment. To this aim, we used a previously proposed classification of the known models of motor control, dividing them into the following categories: neuroanatomy, robotics, self-organization, and ecological context. In total, 2,185 studies were originally considered in this scoping review. After the screening process, we included and analyzed 45 studies: 20 studies were randomized controlled trials, 12 were case series, 4 were case reports, 8 were observational longitudinal pilot studies, and 1 was an uncontrolled trial. Only 10 studies explicitly declared the reference theoretical model. Considering their classification, 21 studies referred to the robotics motor control model, 12 to the self-organization model, 8 to the neuroanatomy model, and 4 to the ecological model. Our results showed that most of the rehabilitative interventions purposed in stroke rehabilitation have no clear theoretical bases on motor control and motor learning models. We suggest this is an issue that deserves attention when designing new experimental interventions in stroke rehabilitation., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Favetta, Romano, Valè, Cieslik, Federico, Girolami, Mazzarotto, Pregnolato, Righetti, Salvalaggio, Castelli, Smania, Bargellesi, Kiper and Petrarca.)
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- 2023
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29. Individualized Remotely Supervised Motor Activity Programs Promote Rehabilitation Goal Achievement, Motor Functioning, and Physical Activity of People with Rett Syndrome-A Single-Cohort Study.
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Romano A, Ippolito E, Favetta M, Lotan M, and Moran DS
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- Humans, Cohort Studies, Goals, Exercise, Family, Rett Syndrome
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Background: Gross motor function in Rett syndrome (RTT) is always limited. The complex clinical picture typical of most people with RTT requires intensive and specific rehabilitation programs. Previous reports on remotely supervised motor activity programs suggested positive outcomes for this population. The current article describes the impact of a remote-supervised motor activity program carried out by family members of individuals with RTT on achieving rehabilitation goals and improving gross and fine motor functioning and daily physical activity., Methods: Forty subjects with RTT followed a three-month remotely supervised motor activity program carried out by their family members at home after a three-month baseline period. After the end of the intervention, a three-month wash-out period was implemented. Rehabilitation goal achievement, motor functioning, and level of daily physical activity were measured., Results: 82.4% of rehabilitation goals were achieved or overachieved. Participants' motor functioning and physical activity significantly increased after the intervention ( p ˂ 0.001). Improvements were maintained after the wash-out phase., Conclusions: The proposed intervention was effective for people with RTT of various ages and severity levels. The results highlight the need for lifelong, individualized, daily based, and professionally supervised rehabilitation possibilities for individuals with RTT.
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- 2022
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30. Influence of sagittal pelvic attitude on gait pattern in normally developed people and interactions with neurological pathologies: A pilot study.
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Favetta M, Romano A, Summa S, Colazza A, Minosse S, Vasco G, Castelli E, and Petrarca M
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Background: Gait Analysis of healthy people, imitating pathological conditions while walking, has increased our understanding of biomechanical factors. The influence of the pelvis as a biomechanical constraint during gait is not specifically studied. How could mimicking a pelvic attitude influence the dynamic mechanical interaction of the body segments? We proposed an investigation of the pelvic attitude role on the gait pattern of typically developed people when they mimicked pelvic anteversion and posteroversion., Materials and Methods: Seventeen healthy volunteers were enrolled in this study (mean age 24.4 ± 5.5). They simulated a pelvic anteversion and posteroversion during walking, exaggerating these postures as much as possible. 3D gait analysis was conducted using an optoelectronic system with eight cameras (Vicon MX, Oxford, United Kingdom) and two force plates (AMTI, Or-6, Watertown, MA, United States). The kinematic, kinetic, and spatio-temporal parameters were compared between the three walking conditions (anteversion, posteroversion, and normal gait)., Results: In Pelvic Anteversion gait (PA) we found: increased hip flexion ( p < 0.0001), increased knee flexion during stance ( p = 0.02), and reduction of ankle flexion-extension Range of Motion (RoM) compared with Pelvic Normal gait (PN). In Pelvic Posteroversion gait (PP) compared with PN, we found: decreased hip flexion-extension RoM ( p < 0.01) with a tendency to hip extension, decreased knee maximum extension in stance ( p = 0.033), and increased ankle maximum dorsiflexion in stance ( p = 0.002)., Conclusion: The configuration of PA contains gait similarities and differences when compared with pathologic gait where there is an anteversion as seen in children with Cerebral Palsy (CP) or Duchenne Muscular Dystrophy (DMD). Similarly, attitudes of PP have been described in patients with Charcot-Marie-Tooth Syndrome (CMT) or patients who have undergone Pelvic Osteotomy (PO). Understanding the dynamic biomechanical constraints is essential to the assessment of pathological behavior. The central nervous system adapts motor behavior in interaction with body constraints and available resources., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Favetta, Romano, Summa, Colazza, Minosse, Vasco, Castelli and Petrarca.)
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- 2022
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31. Comparison of the Gait Biomechanical Constraints in Three Different Type of Neuromotor Damages.
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Minosse S, Favetta M, Romano A, Pisano A, Summa S, Schirinzi T, Vasco G, Castelli E, and Petrarca M
- Abstract
Background and Objective: Absolute angle represents the inclination of a body segment relative to a fixed reference in space. This work compares the absolute and relative angles for exploring biomechanical gait constraints., Methods: Gait patterns of different neuromotor conditions were analyzed using 3D gait analysis: normal gait (healthy, H), Cerebral Palsy (CP), Charcot Marie Tooth (CMT) and Duchenne Muscular Dystrophy (DMD), representing central and peripheral nervous system and muscular disorders, respectively. Forty-two children underwent gait analysis: 10 children affected by CP, 10 children by CMT, 10 children by DMD and 12 healthy children. The kinematic and kinetic parameters were collected to describe the biomechanical pattern of participants' lower limbs. The absolute angles of thigh, leg and foot were calculated using the trigonometric relationship of the tangent. For each absolute series, the mean, range, maximum, minimum and initial contact were calculated. Kinematic and kinetic gait data were studied, and the results were compared with the literature., Results: Statistical analysis of the absolute angles showed how, at the local level, the single segments (thigh, leg and foot) behave differently depending on the pathology. However, if the lower limb is studied globally (sum of the kinematics of the three segments: thigh, leg and foot), a biomechanical constraint emerges., Conclusion: Each segment compensates separately for the disease deficit so as to maintain a global biomechanical invariance. Using a model of inter-joint co-variation could improve the interpretation of the clinical gait pattern., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Minosse, Favetta, Romano, Pisano, Summa, Schirinzi, Vasco, Castelli and Petrarca.)
- Published
- 2022
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32. Impact of a Remotely Supervised Motor Rehabilitation Program on Maternal Well-Being During the COVID-19 Italian Lockdown.
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Zwilling M, Romano A, Favetta M, Ippolito E, and Lotan M
- Abstract
COVID-19 Lockdown was particularly challenging for most mothers of people with intellectual disabilities, including those with Rett syndrome (RTT), leading to feelings of abandonment from healthcare services of their children. Within those days, telerehabilitation has represented a valid alternative to support physical activity and treatment, supporting parents in structuring their children's daily routine at home. This article aims to describe the well-being level of two groups of mothers of girls and women with RTT who were involved in a home-based remotely supervised motor rehabilitation program, respectively, before and during the COVID-19 Italian lockdown. Forty participants with classic RTT were recruited before the lockdown and randomly assigned to two groups that performed the intervention immediately before (Group 1) and during (Group 2) the lockdown, respectively. The intervention included an individualized daily physical activity program carried out for 12 weeks by participants' parents and fortnightly supervised throughout Skype contacts to plan, monitor, and accommodate individual activities in the participant's life at home. The short form Caregivers Well-Being Scale was collected for the mothers in each group 12 weeks before intervention (T1), at intervention initiation (T2), immediately after intervention termination (T3), as well as at 12 weeks after intervention termination (T4). Mothers of participants in the Group 1 showed a stable level of well-being across all four evaluations with a slight improvement during the lockdown, without significant change. Similarly, the well-being level of mothers in the Group 2 showed a statistically significant increase in their well-being between T2 and T3 (during the lockdown) and its reduction to the pre-intervention level between T3 and T4 (after the lockdown). The results suggest that the lockdown did not negatively affect the participants' mothers' well-being, leading to its improvement. Moreover, the proposed intervention could have supported the mothers in managing the new daily routine at home, positively affecting maternal well-being., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Zwilling, Romano, Favetta, Ippolito and Lotan.)
- Published
- 2022
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33. Upper Body Physical Rehabilitation for Children with Ataxia through IMU-Based Exergame.
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Romano A, Favetta M, Summa S, Schirinzi T, Bertini ES, Castelli E, Vasco G, and Petrarca M
- Abstract
Background: Children with ataxia experience balance and movement coordination difficulties and needs intensive physical intervention to maintain functional abilities and counteract the disorder. Exergaming represents a valuable strategy to provide engaging physical intervention to children with ataxia, sustaining their motivation to perform the intervention. This paper aims to describe the effect of a home-conducted exergame-based exercise training for upper body movements control of children with ataxia on their ataxic symptoms, walking ability, and hand dexterity., Methods: Eighteen children with ataxia were randomly divided into intervention and control groups. Participants in the intervention group were asked to follow a 12-week motor activity program at home using the Niurion
® exergame. Blind assessments of participants' ataxic symptoms, dominant and non-dominant hand dexterity, and walking ability were conducted., Results: On average, the participants performed the intervention for 61.5% of the expected time. At the end of the training, participants in the intervention group showed improved hand dexterity that worsened in the control group., Conclusion: The presented exergame enhanced the participants' hand dexterity. However, there is a need for exergames capable of maintaining a high level of players' motivation in playing. It is advisable to plan a mixed intervention to take care of the multiple aspects of the disorder.- Published
- 2022
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34. Intensive Postural and Motor Activity Program Reduces Scoliosis Progression in People with Rett Syndrome.
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Romano A, Ippolito E, Risoli C, Malerba E, Favetta M, Sancesario A, Lotan M, and Moran DS
- Abstract
Background: A scoliosis prevalence of 94% was reported in the population with Rett syndrome (RTT), with an annual progression rate of 14 to 21° Cobb which may result in pain, loss of sitting balance, deterioration of motor skills, and lung disfunction. This paper describes the efficacy of an intensive conservative individualized physical and postural activity program in preventing scoliosis curvature progression in patients with RTT., Methods: Twenty subjects diagnosed with RTT and scoliosis were recruited, and an individualized intensive daily physical activity program was developed for each participant. Each program was conducted for six months by participants' primary caregivers in their daily living environment. Fortnightly remote supervision of the program implementation was provided by an expert therapist. Pre- and post-intervention radiographs and motor functioning were analyzed., Results: An averaged progression of +1.7° ± 8.7° Cobb, over one year (12.3 ± 3.5 months) was observed in our group, together with motor function improvements. A relation between curve progression and motor skill improvement was observed., Conclusions: The intervention prevented scoliosis progression in our group. The achievement of functional motor improvements could enable better body segment control and muscle balancing, with a protective effect on scoliosis progression. The intervention was effective for individuals with RTT across various ages and severity levels. Individual characteristics of each participant and the details of their activity program are described.
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- 2022
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35. Skype Supervised, Individualized, Home-Based Rehabilitation Programs for Individuals With Rett Syndrome and Their Families - Parental Satisfaction and Point of View.
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Lotan M, Ippolito E, Favetta M, and Romano A
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Individuals with Rett syndrome (RTT) experience impaired gross motor skills limiting their capacity. Therefore, they need support to participate in physical activities, and it is crucial to work with primary caregivers when developing appropriate strategies, thereby leading to an active lifestyle. There is limited evidence supporting the effectiveness of remotely supported physical activity interventions. This project aimed to evaluate the effects of a skype-based, telehealth-delivered physical activity program carried out by participants' parents at home. This article will focus on parental points of view. A mixed-methods design evaluating parental satisfaction was conducted. Forty participants with a confirmed genetic diagnosis of RTT and their families were recruited. The intervention included a 12-week individualized daily physical activity program carried out by participants' parents and bi-weekly supervised by expert therapists. Parents' impressions and feelings related to the program implementation were collected throughout semi-structured interviews, and an ad hoc developed questionnaire and discussed. The current project results suggest that a remote physical rehabilitation program, supported fortnightly by video calls, represents an effective way of conducting a remote physical therapy intervention for this population and that it can be easily carried out at home by primary caregivers, promoting positive functional changes, without bringing feelings of frustration due to the required workload. The strategies that families have learned during the program to support the motor activities of their daughters represent an easily performed set of tools that they can maintain and use in everyday life even after the cessation of the program., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Lotan, Ippolito, Favetta and Romano.)
- Published
- 2021
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36. A wearable video-oculography based evaluation of saccades and respective clinical correlates in patients with early onset ataxia.
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Summa S, Schirinzi T, Favetta M, Romano A, Minosse S, Diodato D, Olivieri G, Martinelli D, Sancesario A, Zanni G, Castelli E, Bertini E, Petrarca M, and Vasco G
- Subjects
- Ataxia, Child, Humans, Friedreich Ataxia diagnosis, Saccades, Wearable Electronic Devices
- Abstract
Background: Friedreich Ataxia (FRDA) and other inherited chronic ataxias (CAs) are common causes of early onset ataxias (EOA), a group of conditions still lacking effective therapies and biomarkers. Ocular saccades are considered a reliable paradigm of motor control, useful to track the functioning of underlying neural networks and serving as potential markers for neurological diseases., New Method: A non-invasive video-oculography device (EyeSeeCam) was used to test saccadic parameters (latency, amplitude, duration, velocity) and peak velocity/amplitude ratio ("main sequence") in pediatric patients with FRDA, CAs and healthy controls, providing correlations with standard clinical scores., Results: Pattern of saccadic features differed between CA and FRDA. The main sequence analysis was impaired respectively in vertical saccades in CA, and in horizontal saccades in FRDA. In CA, the amplitude of vertical saccades was reduced, and the size inversely correlated with the Scale for the assessment and rating of ataxia (SARA) score. In FRDA the amplitude of horizontal saccades directly correlated with SARA score., Comparison With Existing Method: EyeSeeCam allowed testing saccades easily and quickly even in pediatric patients with EOA., Conclusions: The pattern of saccadic impairment differed between FRDA and CAs, resulting a prominent involvement of vertical saccades in CA and of horizontal ones in FRDA, which respectively correlated with SARA score. Since such differences may reflect distinct pathophysiological substrates, saccades emerged as a potential source of biomarkers in EOAs. Availability of handy tools, such as EyeSeeCam, may facilitate future research in this field., Competing Interests: Declaration of Competing Interest The authors declare that they have no conflict of interest., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2020
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37. Development of SaraHome: A novel, well-accepted, technology-based assessment tool for patients with ataxia.
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Summa S, Schirinzi T, Bernava GM, Romano A, Favetta M, Valente EM, Bertini E, Castelli E, Petrarca M, Pioggia G, and Vasco G
- Subjects
- Activities of Daily Living, Adolescent, Child, Computers, Disabled Persons, Female, Gait, Humans, Male, Patient Satisfaction, Pilot Projects, Psychomotor Performance, Sitting Position, Software, Surveys and Questionnaires, User-Computer Interface, Video Games, Ataxia physiopathology, Ataxia therapy, Motor Disorders physiopathology, Motor Disorders therapy, Movement
- Abstract
Background and Objective: Early onset ataxias (EOAs) are a heterogeneous group of neurological conditions, responsible for severe motor disability in paediatric age, which still lack reliable outcome measures. Available scales to assess ataxia, such as the Scale for Assessment and Rating of Ataxia (SARA), are based on subjective assessment of specific motor and language tasks by an examiner, and therefore is age dependent and lacks accuracy in detecting small variations in disease severity. In last years, novel technologies, including computer interfaces and videogames, have emerged for clinical applications and the advent of Internet of Medical Things and of Information Communication Technology have allowed the remote control of such technologies. This pilot study describes a newly developed tool (SaraHome) for the assessment at home of EOA evaluating its feasibility and acceptability on a small sample of children., Methods: Ten EOA children and ten caregivers have been enrolled for a preliminary outpatient evaluation. The Microsoft Kinect 2.0 and Leap Motion Controller (LMC) connected to a personal computer with an ad hoc software have been set-up, for the acquisition of standardized motor tasks performed by the patients with the caregivers' assistance. Acceptance and practicability have been tested by QUEST 2.0 and IMI questionnaires in caregivers and patients respectively., Results: The SaraHome software was developed, based on a collection of services provided by a complex architecture that consists of a Restful interface, which enables to access a series of plugins for the execution of different tasks. A graphical user interface allows the acquisition of the patient movements while performing a motor task. A protocol of standard tasks inspired by SARA was established, and a system of video-assisted instruction provided. The set-up for the optimal acquisition of such protocol by Kinect and LMC has been defined. Both patients and caregivers accomplished the SaraHome assessment with good feedback at the technology acceptance questionnaires., Conclusions: SaraHome represents a newly developed tool for the assessment of ataxia in patients, resulting from the integration of low-cost and easy-accessible technologies. This pilot application highlighted the feasibility and the acceptability of the system, suggesting the potential use in clinical practice., Competing Interests: Declaration of Competing Interest The authors declare that they have no conflict of interest., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2020
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38. One-year outcome of coenzyme Q10 supplementation in ADCK3 ataxia (ARCA2).
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Schirinzi T, Favetta M, Romano A, Sancesario A, Summa S, Minosse S, Zanni G, Castelli E, Bertini E, Petrarca M, and Vasco G
- Abstract
Background: The recessive ataxia ARCA2 is a rare disorder characterized by Coenzyme Q10 (CoQ10) deficiency due to biallelic mutations in ADCK3 gene. Despite the pathophysiological role, available data are not univocal on clinical efficacy of CoQ10 supplementation in ARCA2. Here we described the long-term motor outcome of 4 untreated ARCA2 patients prospectively followed-up for one year after starting CoQ10 oral supplementation (15 mg/kg/day)., Methods: Clinical rating scales (SARA; 9 holes peg test; 6 min walking test; Timed 25-Foot Walk) and videoelectronic gait analysis were performed at baseline and every 6 months (T0, T1, T2) to evaluate the motor performances. Since two patients discontinued the treatment at the 7th month, we could provide comparative analysis between longer and shorter supplementation., Results: At T2, the gait speed (Timed 25-Foot Walk test) significantly differed between patients with long and short treatment; overall, the clinical condition tended to be better in patients continuing CoQ10., Conclusions: Although preliminarily, this observation suggests that only prolonged and continuous CoQ10 supplementation may induce mild clinical effects on general motor features of ARCA2. Dedicated trials are now necessary to extend and validate such observation., Competing Interests: Competing interestsThe authors declare that they have no competing interests., (© The Author(s). 2019.)
- Published
- 2019
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39. Evaluation of gait in Duchenne Muscular Dystrophy: Relation of 3D gait analysis to clinical assessment.
- Author
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Romano A, Favetta M, Schirinzi T, Summa S, Minosse S, D'Amico A, Catteruccia M, Petrarca M, Castelli E, Bertini E, and Vasco G
- Subjects
- Adolescent, Biomechanical Phenomena, Child, Child, Preschool, Humans, Male, Muscular Dystrophy, Duchenne genetics, Muscular Dystrophy, Duchenne physiopathology, Preliminary Data, Spatio-Temporal Analysis, Walk Test, Walking, Gait Analysis methods, Muscular Dystrophy, Duchenne diagnosis
- Abstract
Walking ability in Duchenne Muscular Dystrophy (DMD) deteriorates progressively until complete loss of the function. Interventions aimed at maintaining ambulatory ability relies on accurate clinical-based scores and evaluations of walking. This kind of assessment has intrinsic limitations. A 3D optoelectronic system could provide elements useful for the functional evaluation of patients with DMD. Nineteen boys with DMD were evaluated using the 6-Minutes Walking Test, North Star Ambulatory Assessment and 3D gait analysis. Participants' gait parameters were compared to those of an age-matched control group and correlated with standard clinical scores. Seventeen kinematic variables differed between DMD and control groups. Strong correlations with North Star Ambulatory Assessment were found for stride width, gait velocity and ankle angles on the sagittal plane. The 6-Minutes Walking test did not correlate with investigated kinematic variables but showed a correlation with North Star Ambulatory Assessment. Our data support the reported DMD gait pattern characterized by increased anterior pelvic tilt and ankle plantar flexion. The stride width and ankle kinematics emerged as the main representative gait parameters of DMD global ambulatory status. Although preliminary, our findings suggest that 3D gait analysis may provide useful objective and accurate parameters reflecting the functional ability of individuals with DMD., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2019
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40. Longitudinal gait assessment in a stiff person syndrome.
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Schirinzi T, Sancesario A, Romano A, Favetta M, Gobbi M, Valeriani M, Bertini ES, Castelli E, Vasco G, Petrarca M, and Della Bella G
- Subjects
- Child, Drug Therapy, Combination, Gait Disorders, Neurologic diagnosis, Humans, Longitudinal Studies, Male, Muscle Relaxants, Central administration & dosage, Neurologic Examination, Patient Admission, Physical Therapy Modalities, Posture, Reproducibility of Results, Stiff-Person Syndrome diagnosis, Gait Analysis, Gait Disorders, Neurologic rehabilitation, Stiff-Person Syndrome rehabilitation
- Abstract
Stiff person syndrome (SPS) is an autoimmune disorder with multiple clinical presentations, all characterized by generalized or focal muscular stiffness leading to abnormal postures and movements. To date, no standardized treatments are available; also, the outcome measures are mainly clinical based and unstandardized, limiting the reliability of clinical trials. In this case study, we used the eight-camera motion capture system for gait analysis (GA) to outline the gait features and track the clinical evolution of a young patient with SPS receiving a personalized multimodal therapy. GA was accurate in reflecting clinical changes over a 7-week-long period, thus representing a potential source for objective biomarkers in SPS. Therefore, future studies focusing on either the natural history or the treatment of SPS could adopt GA for reliable outocome measures, confirming this preliminary observation.
- Published
- 2018
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41. Non-invasive Focal Mechanical Vibrations Delivered by Wearable Devices: An Open-Label Pilot Study in Childhood Ataxia.
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Schirinzi T, Romano A, Favetta M, Sancesario A, Burattini R, Summa S, Della Bella G, Castelli E, Bertini E, Petrarca M, and Vasco G
- Abstract
Non-invasive focal mechanical vibrations (NIFMV) now represent a strategy of increasing interest to improve motor control in different neurological diseases. Nanotechnology allowed the creation of wearable devices transforming thermal variations into mechanical energy with focal vibrations. This kind of wearable stimulators (WS) has produced encouraging preliminary results when used in the treatment of movement disorders and ataxia in adults. In this open label pilot study we first evaluated the feasibility, safety and effectiveness of NIFMV by WS in a cohort of 10 patients with childhood ataxia, a phenomenological category including different conditions still lacking of effective symptomatic therapies. Through the assessment of both clinical rating scales and spatio-temporal gait parameters via standardized gait analysis, we observed that a 4 weeks long treatment with WS Equistasi® was safe and provided significantly different effects in stride features of patients with slow/non-progressive cerebellar ataxia and Friedreich's Ataxia. Although limited by the sample size, the absence of a placebo-controlled group, the poor compliance of enrolled population to the original experimental design and the partial accuracy of outcome measures in pediatric subjects, we suggest that NIFMV by WS could support locomotion of patients with childhood slow/non-progressive cerebellar ataxia with preserved sensory system and no signs of peripheral neuropathy. Future studies are definitely necessary to confirm these preliminary results and define criteria for successful NIFMV-based treatment.
- Published
- 2018
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42. Double-face activity of resveratrol in voluntary runners: assessment of DNA damage by comet assay.
- Author
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Tomasello B, Grasso S, Malfa G, Stella S, Favetta M, and Renis M
- Subjects
- Case-Control Studies, Comet Assay methods, Deoxyguanosine analogs & derivatives, Deoxyguanosine metabolism, Humans, Hydrogen Peroxide, Leukocytes, Mononuclear drug effects, Leukocytes, Mononuclear metabolism, Male, Middle Aged, Oxidation-Reduction, Oxidative Stress genetics, Resveratrol, Sedentary Behavior, Antioxidants pharmacology, DNA Damage drug effects, Oxidants pharmacology, Oxidative Stress drug effects, Plant Extracts pharmacology, Running physiology, Stilbenes pharmacology
- Abstract
Voluntary runners are subjected to a massive increase in reactive oxygen/nitrogen species production, which can promote different oxidative stress-related diseases such as premature aging, neurodegenerative disorders, and cancer. The aims of this work were to evaluate the following in peripheral blood cells of voluntary runners: (i) DNA status; (ii) susceptibility to the in vitro insult induced by hydrogen peroxide (H(2)O(2)) as a breaking agent; (iii) capabilities of 3,5,4'-trihydroxystilbene (RESV) in counteracting DNA damage. Twenty-five male voluntary runners were compared with 20 sedentary men, as age-matched controls, and DNA status was evaluated with different versions of comet assay: alkaline, neutral, and Fpg enzyme-modified version to measure 8-OH-deoxyguanosine (8-oxo-dG) levels. The H(2)O(2) and/or RESV treatments were performed directly on agarose-embedded cells (atypical comet assay). The results evidenced DNA damage and levels of 8-oxo-dG higher in runners than in sedentary control subjects. The runners' DNA was more prone to the in vitro-induced oxidative insult (200 μM H(2)O(2)) than that of the control group. Resveratrol (100 μM), depending on the individual basal DNA status, was able to switch from antioxidant to pro-oxidant. Our results, on the one hand, validated the proposed in vitro experimental protocol in order to measure individual DNA status. On the other hand, our data point out the importance of monitoring the athletes' redox status before subjecting them to dietary supplementation treatment.
- Published
- 2012
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43. Automatic lung segmentation in CT images with accurate handling of the hilar region.
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De Nunzio G, Tommasi E, Agrusti A, Cataldo R, De Mitri I, Favetta M, Maglio S, Massafra A, Quarta M, Torsello M, Zecca I, Bellotti R, Tangaro S, Calvini P, Camarlinghi N, Falaschi F, Cerello P, and Oliva P
- Subjects
- Humans, Lung Neoplasms diagnostic imaging, Retrospective Studies, Tomography, X-Ray Computed, Algorithms, Lung diagnostic imaging, Lung Neoplasms diagnosis, Radiographic Image Interpretation, Computer-Assisted methods
- Abstract
A fully automated and three-dimensional (3D) segmentation method for the identification of the pulmonary parenchyma in thorax X-ray computed tomography (CT) datasets is proposed. It is meant to be used as pre-processing step in the computer-assisted detection (CAD) system for malignant lung nodule detection that is being developed by the Medical Applications in a Grid Infrastructure Connection (MAGIC-5) Project. In this new approach the segmentation of the external airways (trachea and bronchi), is obtained by 3D region growing with wavefront simulation and suitable stop conditions, thus allowing an accurate handling of the hilar region, notoriously difficult to be segmented. Particular attention was also devoted to checking and solving the problem of the apparent 'fusion' between the lungs, caused by partial-volume effects, while 3D morphology operations ensure the accurate inclusion of all the nodules (internal, pleural, and vascular) in the segmented volume. The new algorithm was initially developed and tested on a dataset of 130 CT scans from the Italung-CT trial, and was then applied to the ANODE09-competition images (55 scans) and to the LIDC database (84 scans), giving very satisfactory results. In particular, the lung contour was adequately located in 96% of the CT scans, with incorrect segmentation of the external airways in the remaining cases. Segmentation metrics were calculated that quantitatively express the consistency between automatic and manual segmentations: the mean overlap degree of the segmentation masks is 0.96 ± 0.02, and the mean and the maximum distance between the mask borders (averaged on the whole dataset) are 0.74 ± 0.05 and 4.5 ± 1.5, respectively, which confirms that the automatic segmentations quite correctly reproduce the borders traced by the radiologist. Moreover, no tissue containing internal and pleural nodules was removed in the segmentation process, so that this method proved to be fit for the use in the framework of a CAD system. Finally, in the comparison with a two-dimensional segmentation procedure, inter-slice smoothness was calculated, showing that the masks created by the 3D algorithm are significantly smoother than those calculated by the 2D-only procedure.
- Published
- 2011
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