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3. Delphi definition of the EADC‐ADNI Harmonized Protocol for hippocampal segmentation on magnetic resonance

Author

Boccardi, Marina, Bocchetta, Martina, Apostolova, Liana G, Barnes, Josephine, Bartzokis, George, Corbetta, Gabriele, DeCarli, Charles, deToledo‐Morrell, Leyla, Firbank, Michael, Ganzola, Rossana, Gerritsen, Lotte, Henneman, Wouter, Killiany, Ronald J, Malykhin, Nikolai, Pasqualetti, Patrizio, Pruessner, Jens C, Redolfi, Alberto, Robitaille, Nicolas, Soininen, Hilkka, Tolomeo, Daniele, Wang, Lei, Watson, Craig, Wolf, Henrike, Duvernoy, Henri, Duchesne, Simon, Jack, Clifford R, Frisoni, Giovanni B, and Segmentation, EADC‐ADNI Working Group on the Harmonized Protocol for Manual Hippocampal

Subjects
Neurosciences, Alzheimer Disease, Atrophy, Consensus, Delphi Technique, Hippocampus, Humans, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Internationality, Magnetic Resonance Imaging, Neuroimaging, Volumetry, Manual segmentation, Harmonization, Anatomical landmarks, Delphi procedure, Alzheimer's disease, Medial temporal Jobe, Hippocampal atrophy, Magnetic.resonance, Standard operational procedures, Enrichment, MCI, Reliability, EADC-ADNI Working Group on the Harmonized Protocol for Manual Hippocampal Segmentation, Magnetic resonance, Medial temporal lobe, Clinical Sciences, Geriatrics
Abstract

BackgroundThis study aimed to have international experts converge on a harmonized definition of whole hippocampus boundaries and segmentation procedures, to define standard operating procedures for magnetic resonance (MR)-based manual hippocampal segmentation.MethodsThe panel received a questionnaire regarding whole hippocampus boundaries and segmentation procedures. Quantitative information was supplied to allow evidence-based answers. A recursive and anonymous Delphi procedure was used to achieve convergence. Significance of agreement among panelists was assessed by exact probability on Fisher's and binomial tests.ResultsAgreement was significant on the inclusion of alveus/fimbria (P = .021), whole hippocampal tail (P = .013), medial border of the body according to visible morphology (P = .0006), and on this combined set of features (P = .001). This definition captures 100% of hippocampal tissue, 100% of Alzheimer's disease-related atrophy, and demonstrated good reliability on preliminary intrarater (0.98) and inter-rater (0.94) estimates.DiscussionConsensus was achieved among international experts with respect to hippocampal segmentation using MR resulting in a harmonized segmentation protocol.

Published
2015

4. The EADC‐ADNI Harmonized Protocol for manual hippocampal segmentation on magnetic resonance: Evidence of validity

Author

Frisoni, Giovanni B, Jack, Clifford R, Bocchetta, Martina, Bauer, Corinna, Frederiksen, Kristian S, Liu, Yawu, Preboske, Gregory, Swihart, Tim, Blair, Melanie, Cavedo, Enrica, Grothe, Michel J, Lanfredi, Mariangela, Martinez, Oliver, Nishikawa, Masami, Portegies, Marileen, Stoub, Travis, Ward, Chadwich, Apostolova, Liana G, Ganzola, Rossana, Wolf, Dominik, Barkhof, Frederik, Bartzokis, George, DeCarli, Charles, Csernansky, John G, deToledo‐Morrell, Leyla, Geerlings, Mirjam I, Kaye, Jeffrey, Killiany, Ronald J, Lehéricy, Stephane, Matsuda, Hiroshi, O'Brien, John, Silbert, Lisa C, Scheltens, Philip, Soininen, Hilkka, Teipel, Stefan, Waldemar, Gunhild, Fellgiebel, Andreas, Barnes, Josephine, Firbank, Michael, Gerritsen, Lotte, Henneman, Wouter, Malykhin, Nikolai, Pruessner, Jens C, Wang, Lei, Watson, Craig, Wolf, Henrike, deLeon, Mony, Pantel, Johannes, Ferrari, Clarissa, Bosco, Paolo, Pasqualetti, Patrizio, Duchesne, Simon, Duvernoy, Henri, Boccardi, Marina, Initiative, EADC‐ADNI Working Group on The Harmonized Protocol for Manual Hippocampal Volumetry and for the Alzheimer's Disease Neuroimaging, Albert, Marilyn S, Bennet, David, Camicioli, Richard, Collins, D Louis, Dubois, Bruno, Hampel, Harald, denHeijer, Tom, Hock, Christofer, Jagust, William, Launer, Leonore, Maller, Jerome J, Mueller, Susan, Sachdev, Perminder, Simmons, Andy, Thompson, Paul M, Visser, Peter‐Jelle, Wahlund, Lars‐Olof, Weiner, Michael W, and Winblad, Bengt

Subjects
Biomedical and Clinical Sciences, Neurosciences, Clinical Sciences, Brain Disorders, Biomedical Imaging, Clinical Research, Aged, Alzheimer Disease, Atrophy, Female, Functional Laterality, Hippocampus, Humans, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Internet, Magnetic Resonance Imaging, Male, Middle Aged, Neuroimaging, Organ Size, Reproducibility of Results, Hippocampal volumetry, Magnetic resonance, Alzheimer's disease, Biomarkers, Diagnostic criteria, Enrichment, Clinical trials, Validation, Harmonized protocol, Standard operating procedures, Manual segmentation, EADC-ADNI Working Group on The Harmonized Protocol for Manual Hippocampal Volumetry and for the Alzheimer's Disease Neuroimaging Initiative, Geriatrics, Clinical sciences, Biological psychology
Abstract

BackgroundAn international Delphi panel has defined a harmonized protocol (HarP) for the manual segmentation of the hippocampus on MR. The aim of this study is to study the concurrent validity of the HarP toward local protocols, and its major sources of variance.MethodsFourteen tracers segmented 10 Alzheimer's Disease Neuroimaging Initiative (ADNI) cases scanned at 1.5 T and 3T following local protocols, qualified for segmentation based on the HarP through a standard web-platform and resegmented following the HarP. The five most accurate tracers followed the HarP to segment 15 ADNI cases acquired at three time points on both 1.5 T and 3T.ResultsThe agreement among tracers was relatively low with the local protocols (absolute left/right ICC 0.44/0.43) and much higher with the HarP (absolute left/right ICC 0.88/0.89). On the larger set of 15 cases, the HarP agreement within (left/right ICC range: 0.94/0.95 to 0.99/0.99) and among tracers (left/right ICC range: 0.89/0.90) was very high. The volume variance due to different tracers was 0.9% of the total, comparing favorably to variance due to scanner manufacturer (1.2), atrophy rates (3.5), hemispheric asymmetry (3.7), field strength (4.4), and significantly smaller than the variance due to atrophy (33.5%, P < .001), and physiological variability (49.2%, P < .001).ConclusionsThe HarP has high measurement stability compared with local segmentation protocols, and good reproducibility within and among human tracers. Hippocampi segmented with the HarP can be used as a reference for the qualification of human tracers and automated segmentation algorithms.

Published
2015

6. From a dysembryoplastic neuroepithelial tumor to a glioblastoma multiforme: Pitfalls of initial diagnosis on biopsy material, a case report

Author

Slegers, Rutger J., primary, Beckervordersandforth, Jan, additional, Hoeben, Ann, additional, Hoogland, Govert, additional, Broen, Martijn P. G., additional, Anten, Monique, additional, Dings, Jim T. A., additional, Ende, Piet van den, additional, Henneman, Wouter J. P., additional, and Schijns, Olaf E. M. G., additional

Published
2022
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14. The EADC-ADNI Harmonized Protocol for manual hippocampal segmentation on magnetic resonance : Evidence of validity

Author

Frisoni, Giovanni B., Jack, Clifford R., Grothe, Michel J., Lanfredi, Mariangela, Martinez, Oliver, Nishikawa, Masami, Portegies, Marileen, Stoub, Travis, Ward, Chadwich, Apostolova, Liana G., Ganzola, Rossana, Wolf, Dominik, Bocchetta, Martina, Barkhof, Frederik, Bartzokis, George, DeCarli, Charles, Csernansky, John G., deToledo-Morrell, Leyla, Geerlings, Mirjam I., Kaye, Jeffrey, Killiany, Ronald J., Lehéricy, Stephane, Matsuda, Hiroshi, Bauer, Corinna, O'Brien, John, Silbert, Lisa C., Scheltens, Philip, Soininen, Hilkka, Teipel, Stefan, Waldemar, Gunhild, Fellgiebel, Andreas, Barnes, Josephine, Firbank, Michael, Gerritsen, Lotte, Frederiksen, Kristian S., Henneman, Wouter, Malykhin, Nikolai, Pruessner, Jens C., Wang, Lei, Watson, Craig, Wolf, Henrike, deLeon, Mony, Pantel, Johannes, Ferrari, Clarissa, Bosco, Paolo, Liu, Yawu, Pasqualetti, Patrizio, Duchesne, Simon, Duvernoy, Henri, Boccardi, Marina, Albert, Marilyn S., Bennet, David, Camicioli, Richard, Collins, D. Louis, Dubois, Bruno, Hampel, Harald, Preboske, Gregory, denHeijer, Tom, Hock, Christofer, Jagust, William, Launer, Leonore, Maller, Jerome J., Mueller, Susan, Sachdev, Perminder, Simmons, Andy, Thompson, Paul M., Visser, Peter-Jelle, Swihart, Tim, Wahlund, Lars-Olof, Weiner, Michael W., Winblad, Bengt, Blair, Melanie, Cavedo, Enrica, Radiology and nuclear medicine, Neurology, Psychiatry, NCA - Brain imaging technology, and NCA - neurodegeneration

Subjects
Male, Pathology, Diagnostic criteria, Epidemiology, Image Processing, genetics [Alzheimer Disease], Hippocampus, Functional Laterality, Imaging, pathology [Alzheimer Disease], ddc:616.89, methods [Magnetic Resonance Imaging], Computer-Assisted, Clinical trials, ddc:150, methods [Image Processing, Computer-Assisted], Validation, Image Processing, Computer-Assisted, Segmentation, HARP, medicine.diagnostic_test, Health Policy, Organ Size, Alzheimer's disease, Middle Aged, instrumentation [Magnetic Resonance Imaging], Manual segmentation, Magnetic Resonance Imaging, Psychiatry and Mental health, Magnetic resonance, Biomedical Imaging, Female, methods [Neuroimaging], methods [Imaging, Three-Dimensional], EADC-ADNI Working Group on The Harmonized Protocol for Manual Hippocampal Volumetry and for the Alzheimer's Disease Neuroimaging Initiative, medicine.medical_specialty, Hippocampal volumetry, Biomarkers, Enrichment, Harmonized protocol, Standard operating procedures, Concurrent validity, Clinical Sciences, Neuroimaging, Article, Cellular and Molecular Neuroscience, Imaging, Three-Dimensional, Developmental Neuroscience, Clinical Research, Alzheimer Disease, medicine, Humans, ddc:610, Aged, Protocol (science), Reproducibility, Internet, business.industry, Neurosciences, Reproducibility of Results, Magnetic resonance imaging, Brain Disorders, pathology [Hippocampus], Geriatrics, Three-Dimensional, Neurology (clinical), Geriatrics and Gerontology, Atrophy, Nuclear medicine, business
Abstract

BackgroundAn international Delphi panel has defined a harmonized protocol (HarP) for the manual segmentation of the hippocampus on MR. The aim of this study is to study the concurrent validity of the HarP toward local protocols, and its major sources of variance.MethodsFourteen tracers segmented 10 Alzheimer's Disease Neuroimaging Initiative (ADNI) cases scanned at 1.5 T and 3T following local protocols, qualified for segmentation based on the HarP through a standard web-platform and resegmented following the HarP. The five most accurate tracers followed the HarP to segment 15 ADNI cases acquired at three time points on both 1.5 T and 3T.ResultsThe agreement among tracers was relatively low with the local protocols (absolute left/right ICC 0.44/0.43) and much higher with the HarP (absolute left/right ICC 0.88/0.89). On the larger set of 15 cases, the HarP agreement within (left/right ICC range: 0.94/0.95 to 0.99/0.99) and among tracers (left/right ICC range: 0.89/0.90) was very high. The volume variance due to different tracers was 0.9% of the total, comparing favorably to variance due to scanner manufacturer (1.2), atrophy rates (3.5), hemispheric asymmetry (3.7), field strength (4.4), and significantly smaller than the variance due to atrophy (33.5%, P < .001), and physiological variability (49.2%, P < .001).ConclusionsThe HarP has high measurement stability compared with local segmentation protocols, and good reproducibility within and among human tracers. Hippocampi segmented with the HarP can be used as a reference for the qualification of human tracers and automated segmentation algorithms. published

Published
2015

15. The EADC-ADNI Harmonized Protocol for manual hippocampal segmentation on magnetic resonance:Evidence of validity

Author

Frisoni, Giovanni B, Jack, Clifford R, Bocchetta, Martina, Bauer, Corinna, Frederiksen, Kristian S, Liu, Yawu, Preboske, Gregory, Swihart, Tim, Blair, Melanie, Cavedo, Enrica, Grothe, Michel J, Lanfredi, Mariangela, Martinez, Oliver, Nishikawa, Masami, Portegies, Marileen, Stoub, Travis, Ward, Chadwich, Apostolova, Liana G, Ganzola, Rossana, Wolf, Dominik, Barkhof, Frederik, Bartzokis, George, DeCarli, Charles, Csernansky, John G, deToledo-Morrell, Leyla, Geerlings, Mirjam I, Kaye, Jeffrey, Killiany, Ronald J, Lehéricy, Stephane, Matsuda, Hiroshi, O'Brien, John, Silbert, Lisa C, Scheltens, Philip, Soininen, Hilkka, Teipel, Stefan, Waldemar, Gunhild, Fellgiebel, Andreas, Barnes, Josephine, Firbank, Michael, Gerritsen, Lotte, Henneman, Wouter, Malykhin, Nikolai, Pruessner, Jens C, Wang, Lei, Watson, Craig, Wolf, Henrike, deLeon, Mony, Pantel, Johannes, Ferrari, Clarissa, Bosco, Paolo, Frisoni, Giovanni B, Jack, Clifford R, Bocchetta, Martina, Bauer, Corinna, Frederiksen, Kristian S, Liu, Yawu, Preboske, Gregory, Swihart, Tim, Blair, Melanie, Cavedo, Enrica, Grothe, Michel J, Lanfredi, Mariangela, Martinez, Oliver, Nishikawa, Masami, Portegies, Marileen, Stoub, Travis, Ward, Chadwich, Apostolova, Liana G, Ganzola, Rossana, Wolf, Dominik, Barkhof, Frederik, Bartzokis, George, DeCarli, Charles, Csernansky, John G, deToledo-Morrell, Leyla, Geerlings, Mirjam I, Kaye, Jeffrey, Killiany, Ronald J, Lehéricy, Stephane, Matsuda, Hiroshi, O'Brien, John, Silbert, Lisa C, Scheltens, Philip, Soininen, Hilkka, Teipel, Stefan, Waldemar, Gunhild, Fellgiebel, Andreas, Barnes, Josephine, Firbank, Michael, Gerritsen, Lotte, Henneman, Wouter, Malykhin, Nikolai, Pruessner, Jens C, Wang, Lei, Watson, Craig, Wolf, Henrike, deLeon, Mony, Pantel, Johannes, Ferrari, Clarissa, and Bosco, Paolo

Abstract

BACKGROUND: An international Delphi panel has defined a harmonized protocol (HarP) for the manual segmentation of the hippocampus on MR. The aim of this study is to study the concurrent validity of the HarP toward local protocols, and its major sources of variance.METHODS: Fourteen tracers segmented 10 Alzheimer's Disease Neuroimaging Initiative (ADNI) cases scanned at 1.5 T and 3T following local protocols, qualified for segmentation based on the HarP through a standard web-platform and resegmented following the HarP. The five most accurate tracers followed the HarP to segment 15 ADNI cases acquired at three time points on both 1.5 T and 3T.RESULTS: The agreement among tracers was relatively low with the local protocols (absolute left/right ICC 0.44/0.43) and much higher with the HarP (absolute left/right ICC 0.88/0.89). On the larger set of 15 cases, the HarP agreement within (left/right ICC range: 0.94/0.95 to 0.99/0.99) and among tracers (left/right ICC range: 0.89/0.90) was very high. The volume variance due to different tracers was 0.9% of the total, comparing favorably to variance due to scanner manufacturer (1.2), atrophy rates (3.5), hemispheric asymmetry (3.7), field strength (4.4), and significantly smaller than the variance due to atrophy (33.5%, P < .001), and physiological variability (49.2%, P < .001).CONCLUSIONS: The HarP has high measurement stability compared with local segmentation protocols, and good reproducibility within and among human tracers. Hippocampi segmented with the HarP can be used as a reference for the qualification of human tracers and automated segmentation algorithms.

Published
2015

16. O2-11-02: Definition of harmonized protocol for hippocampal segmentation

Author

Boccardi, Marina, primary, Bocchetta, Martina, additional, Apostolova, Liana, additional, Barnes, Josephine, additional, Bartzokis, George, additional, Corbetta, Gabriele, additional, DeCarli, Charles, additional, DeToledo-Morrell, Leyla, additional, Firbank, Michael, additional, Ganzola, Rossana, additional, Gerritsen, Lotte, additional, Henneman, Wouter, additional, Killiany, Ronald, additional, Malykhin, Nikolai, additional, Pasqualetti, Patrizio, additional, Pruessner, Jens, additional, Redolfi, Alberto, additional, Robitaille, Nicolas, additional, Soininen, Hilkka, additional, Tolomeo, Daniele, additional, Wang, Lei, additional, Watson, Craig, additional, Wolf, Henrike, additional, Duchesne, Simon, additional, Jack, Clifford, additional, and Frisoni, Giovanni, additional

Published
2012
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17. IC-P-034: Definition of harmonized protocol for hippocampal segmentation

Author

Boccardi, Marina, primary, Bocchetta, Martina, additional, Apostolova, Liana, additional, Barnes, Josephine, additional, Bartzokis, George, additional, Corbetta, Gabriele, additional, DeCarli, Charles, additional, DeToledo-Morrell, Leyla, additional, Firbank, Michael, additional, Ganzola, Rossana, additional, Gerritsen, Lotte, additional, Henneman, Wouter, additional, Killiany, Ronald, additional, Malykhin, Nikolai, additional, Pasqualetti, Patrizio, additional, Pruessner, Jens, additional, Redolfi, Alberto, additional, Robitaille, Nicolas, additional, Soininen, Hilkka, additional, Tolomeo, Daniele, additional, Wang, Lei, additional, Watson, Craig, additional, Wolf, Henrike, additional, Duchesne, Simon, additional, Jack, Clifford, additional, and Frisoni, Giovanni, additional

Published
2012
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27. Definition of harmonized protocol for hippocampal segmentation

Author

Boccardi, Marina, Bocchetta, Martina, Apostolova, Liana, Barnes, Josephine, Bartzokis, George, Corbetta, Gabriele, DeCarli, Charles, DeToledo-Morrell, Leyla, Firbank, Michael, Ganzola, Rossana, Gerritsen, Lotte, Henneman, Wouter, Killiany, Ronald, Malykhin, Nikolai, Pasqualetti, Patrizio, Pruessner, Jens, Redolfi, Alberto, Robitaille, Nicolas, Soininen, Hilkka, Tolomeo, Daniele, Wang, Lei, Watson, Craig, Wolf, Henrike, Duchesne, Simon, Jack, Clifford, and Frisoni, Giovanni

Published
2012
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28. Detection of Bone Marrow Edema in the Head and Neck With Dual-Energy CT: Ready for Clinical Use?

Author

Timmer VCML, Kroonenburgh AMJLV, Henneman WJP, Vaassen LAA, Roele ED, Kessler PAWH, and Postma AA

Subjects
Aged, Humans, Magnetic Resonance Imaging, Male, Retrospective Studies, Sensitivity and Specificity, Bone Marrow Diseases diagnostic imaging, Edema diagnostic imaging, Head diagnostic imaging, Neck diagnostic imaging, Radiography, Dual-Energy Scanned Projection methods, Tomography, X-Ray Computed methods
Abstract

OBJECTIVE. The aim of this study is to evaluate the ability of dual-energy CT (DECT) to identify bone marrow edema (BME) in the head and neck region in comparison with MRI as the standard of reference. MATERIALS AND METHODS. A total of 33 patients who underwent imaging between February 2016 and February 2018 were included in this retrospective study. All patients underwent both DECT and MRI for head and neck abnormalities. Two radiologists independently visually assessed virtual noncalcium (VNCa) reconstructions with color-coded maps for the presence of BME. STIR or T2-weighted MRI reconstructions with fat suppression were used as the standard of reference for BME. Subjective quality assessment and severity of metal artifacts were scored on both imaging modalities. RESULTS. BME was detected in 18 patients on DECT compared with 20 patients on MRI. Most BME seen on DECT was located in the mandible. VNCa DECT images had a sensitivity, specificity, positive predictive value, and negative predictive value for BME of 85%, 92%, 94%, and 80% respectively, using MRI as the reference. The quality of the images was rated as excellent to moderate in 94% of the patients for VNCa DECT compared with 82% of the patients for MRI, but this difference was not statistically significant. Significantly more metal artifacts were scored on the mixed DECT images than on the MR images, but these artifacts did not interfere with diagnosis. CONCLUSION. BME detection in the head and neck region seems possible with VNCa DECT images and has the potential to provide an alternative for MRI in clinical practice.

Published
2020
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