Search

Your search keyword '"Prior, John"' showing total 1,711 results
Start Over Author "Prior, John"

Refine your results

more »

more »

more »

more »

more »
1,711 results on '"Prior, John"'

2. A Bispectral 3D U-Net for Rotation Robustness in Medical Segmentation

Author

Chevalley, Arthur, Oreiller, Valentin, Fageot, Julien, Prior, John O., Andrearczyk, Vincent, Depeursinge, Adrien, Goos, Gerhard, Series Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Chen, Chao, editor, Singh, Yash, editor, and Hu, Xiaoling, editor

Published
2025
Full Text
View/download PDF

8. Guiding principles on the education and practice of theranostics

Author

Pascual, Thomas N. B., Paez, Diana, Iagaru, Andrei, Gnanasegaran, Gopi, Lee, Sze Ting, Sathekge, Mike, Buatti, John M., Giammarile, Francesco, Al-Ibraheem, Akram, Pardo, Manuela Arevalo, Baum, Richard P., De Bari, Berardino, Ben-Haim, Simona, Blay, Jean-Yves, Brink, Anita, Estrada-Lobato, Enrique, Fanti, Stefano, Golubic, Anja Tea, Hatazawa, Jun, Israel, Ora, Kiess, Ana, Knoll, Peter, Louw, Lizette, Mariani, Giuliano, Mirzaei, Siroos, Orellana, Pilar, Prior, John O., Urbain, Jean-Luc, Vichare, Shrikant, Vinjamuri, Sobhan, Virgolini, Irene, and Scott, Andrew M.

Published
2024
Full Text
View/download PDF

13. Overview of the HECKTOR Challenge at MICCAI 2021: Automatic Head and Neck Tumor Segmentation and Outcome Prediction in PET/CT Images

Author

Andrearczyk, Vincent, Oreiller, Valentin, Boughdad, Sarah, Rest, Catherine Chez Le, Elhalawani, Hesham, Jreige, Mario, Prior, John O., Vallières, Martin, Visvikis, Dimitris, Hatt, Mathieu, and Depeursinge, Adrien

Subjects
Electrical Engineering and Systems Science - Image and Video Processing, Computer Science - Computer Vision and Pattern Recognition
Abstract

This paper presents an overview of the second edition of the HEad and neCK TumOR (HECKTOR) challenge, organized as a satellite event of the 24th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI) 2021. The challenge is composed of three tasks related to the automatic analysis of PET/CT images for patients with Head and Neck cancer (H&N), focusing on the oropharynx region. Task 1 is the automatic segmentation of H&N primary Gross Tumor Volume (GTVt) in FDG-PET/CT images. Task 2 is the automatic prediction of Progression Free Survival (PFS) from the same FDG-PET/CT. Finally, Task 3 is the same as Task 2 with ground truth GTVt annotations provided to the participants. The data were collected from six centers for a total of 325 images, split into 224 training and 101 testing cases. The interest in the challenge was highlighted by the important participation with 103 registered teams and 448 result submissions. The best methods obtained a Dice Similarity Coefficient (DSC) of 0.7591 in the first task, and a Concordance index (C-index) of 0.7196 and 0.6978 in Tasks 2 and 3, respectively. In all tasks, simplicity of the approach was found to be key to ensure generalization performance. The comparison of the PFS prediction performance in Tasks 2 and 3 suggests that providing the GTVt contour was not crucial to achieve best results, which indicates that fully automatic methods can be used. This potentially obviates the need for GTVt contouring, opening avenues for reproducible and large scale radiomics studies including thousands potential subjects.

Published
2022

16. The diagnostic performance of functional dopaminergic scintigraphic imaging in the diagnosis of dementia with Lewy bodies: an updated systematic review

Author

Jreige, Mario, Kurian, George K., Perriraz, Jérémy, Potheegadoo, Jevita, Bernasconi, Fosco, Stampacchia, Sara, Blanke, Olaf, Alessandra, Griffa, Lejay, Noemie, Chiabotti, Paolo Salvioni, Rouaud, Olivier, Nicod Lalonde, Marie, Schaefer, Niklaus, Treglia, Giorgio, Allali, Gilles, and Prior, John O.

Published
2023
Full Text
View/download PDF

17. 3D Solid Spherical Bispectrum CNNs for Biomedical Texture Analysis

Author

Oreiller, Valentin, Andrearczyk, Vincent, Fageot, Julien, Prior, John O., and Depeursinge, Adrien

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Locally Rotation Invariant (LRI) operators have shown great potential in biomedical texture analysis where patterns appear at random positions and orientations. LRI operators can be obtained by computing the responses to the discrete rotation of local descriptors, such as Local Binary Patterns (LBP) or the Scale Invariant Feature Transform (SIFT). Other strategies achieve this invariance using Laplacian of Gaussian or steerable wavelets for instance, preventing the introduction of sampling errors during the discretization of the rotations. In this work, we obtain LRI operators via the local projection of the image on the spherical harmonics basis, followed by the computation of the bispectrum, which shares and extends the invariance properties of the spectrum. We investigate the benefits of using the bispectrum over the spectrum in the design of a LRI layer embedded in a shallow Convolutional Neural Network (CNN) for 3D image analysis. The performance of each design is evaluated on two datasets and compared against a standard 3D CNN. The first dataset is made of 3D volumes composed of synthetically generated rotated patterns, while the second contains malignant and benign pulmonary nodules in Computed Tomography (CT) images. The results indicate that bispectrum CNNs allows for a significantly better characterization of 3D textures than both the spectral and standard CNN. In addition, it can efficiently learn with fewer training examples and trainable parameters when compared to a standard convolutional layer., Comment: 10 pages

Published
2020

24. 68Ga-DOTATOC PET/CT to detect immune checkpoint inhibitor-related myocarditis.

Author

Boughdad, Sarah, Latifyan, Sofiya, Fenwick, Craig, Bouchaab, Hasna, Suffiotti, Madeleine, Moslehi, Javid, Salem, Joe-Elie, Schaefer, Niklaus, Nicod-Lalonde, Marie, Costes, Julien, Perreau, Matthieu, Michielin, Olivier, Peters, Solange, Prior, John, and Obeid, Michel

Subjects
immunotherapy, Aged, Female, Gallium Radioisotopes, Humans, Immune Checkpoint Inhibitors, Male, Myocarditis, Positron Emission Tomography Computed Tomography
Abstract

BACKGROUND: Immune checkpoint inhibitor (ICI)-related myocarditis is a rare but potentially fatal adverse event that can occur following ICI exposure. Early diagnosis and treatment are key to improve patient outcomes. Somatostatin receptor-based positron emission tomography-CT (PET/CT) showed promising results for the assessment of myocardial inflammation, yet information regarding its value for the diagnosis of ICI-related myocarditis, especially at the early stage, is limited. Thus, we investigated the value of 68Ga-DOTA(0)-Phe(1)-Tyr(3)-octreotide (68Ga-DOTATOC) PET/CT for the early detection and diagnosis of ICI-related myocarditis. METHODS: Consecutive patients with clinically suspected ICI-related myocarditis from July 2018 to February 2021 were retrospectively evaluated in this single-center study. All patients underwent imaging for the detection of ICI-related myocarditis using either cardiac magnetic resonance (CMR) imaging or 68Ga-DOTATOC PET/CT. PET/CT images were acquired 90 min after the injection of 2 MBq/kg 68Ga-DOTATOC with pathological myocardial uptake in the left ventricle (LV) suggestive of myocarditis defined using a myocardium-to-background ratio of peak standard uptake value to mean intracavitary LV standard uptake (MBRpeak) value above 1.6. Patients had a full cardiological work-up including ECG, echocardiography, serum cardiac troponin I (cTnI), cardiac troponin T and creatine kinase (CK), CK-MB. Endomyocardial biopsy and inflammatory cytokine markers were also analyzed. The detection rate of ICI-related myocarditis using 68Ga-DOTATOC PET/CT and CMR was assessed. RESULTS: A total of 11 patients had clinically suspected ICI-related myocarditis; 9 underwent 68Ga -DOTATOC PET/CT. All nine (100%) patients with 68Ga-DOTATOC PET/CT presented with pathological myocardial uptake in the LV that was suggestive of myocarditis (MBRpeak of 3.2±0.8, range 2.2-4.4). Eight patients had CMR imaging and 3/8 (38%) patients had lesions evocative of myocarditis. All PET-positive patients were previously treated with a high dose of steroids and intravenous immunoglobulin prior to PET/CT had elevated serum cTnI except for one patient for whom PET/CT was delayed several days. Interestingly, in 5/6 (83%) patients who presented with concomitant myositis, pathological uptake was seen on whole-body 68Ga-DOTATOC PET/CT images in the skeletal muscles, suggesting an additional advantage of this method to assess the full extent of the disease. In contrast, four patients with CMR imaging had negative findings despite having elevated serum cTnI levels (range 20.5-5896.1 ng/mL), thus defining possible myocarditis. Newly identified immune correlates could provide specific biomarkers for the diagnosis of ICI-related myocarditis. Most tested patients (six of seven patients) had serum increases in the inflammatory cytokine interleukin (IL)-6 and in the chemokines CXCL9, CXCL10, and CXCL13, and the mass cytometry phenotypes of immune cell populations in the blood also showed correlations with myocardial inflammation. Four of five patients with myocarditis exhibited a Th1/Th2 imbalance favoring a pronounced inflammatory Th1, Th1/Th17, and Th17 CD4 memory T-cell response. The high proportion of non-classical monocytes and significantly reduced levels of CD31 in four to five patients was also consistent with an inflammatory disease. CONCLUSION: The use of 68Ga-DOTATOC PET/CT along with immune correlates is a highly sensitive method to detect ICI-related myocarditis especially in the early stage of myocardial inflammation, as patients with elevated cTnI may present normal CMR imaging results. 68Ga-DOTATOC PET/CT is also useful for detecting concomitant myositis. These results need to be confirmed in a larger population of patients and validated against a histological gold standard if available.

Published
2021

25. Overview of the HECKTOR Challenge at MICCAI 2022: Automatic Head and Neck Tumor Segmentation and Outcome Prediction in PET/CT

Author

Andrearczyk, Vincent, Oreiller, Valentin, Abobakr, Moamen, Akhavanallaf, Azadeh, Balermpas, Panagiotis, Boughdad, Sarah, Capriotti, Leo, Castelli, Joel, Cheze Le Rest, Catherine, Decazes, Pierre, Correia, Ricardo, El-Habashy, Dina, Elhalawani, Hesham, Fuller, Clifton D., Jreige, Mario, Khamis, Yomna, La Greca, Agustina, Mohamed, Abdallah, Naser, Mohamed, Prior, John O., Ruan, Su, Tanadini-Lang, Stephanie, Tankyevych, Olena, Salimi, Yazdan, Vallières, Martin, Vera, Pierre, Visvikis, Dimitris, Wahid, Kareem, Zaidi, Habib, Hatt, Mathieu, Depeursinge, Adrien, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Andrearczyk, Vincent, editor, Oreiller, Valentin, editor, Hatt, Mathieu, editor, and Depeursinge, Adrien, editor

Published
2023
Full Text
View/download PDF

31. Parathyroid Imaging

Author

Lalonde, Marie Nicod, Correia, Ricardo Dias, Sykiotis, Gerasimos P., Schaefer, Niklaus, Matter, Maurice, and Prior, John O.

Published
2023
Full Text
View/download PDF

32. The neurons that restore walking after paralysis

Author

Kathe, Claudia, Skinnider, Michael A., Hutson, Thomas H., Regazzi, Nicola, Gautier, Matthieu, Demesmaeker, Robin, Komi, Salif, Ceto, Steven, James, Nicholas D., Cho, Newton, Baud, Laetitia, Galan, Katia, Matson, Kaya J. E., Rowald, Andreas, Kim, Kyungjin, Wang, Ruijia, Minassian, Karen, Prior, John O., Asboth, Leonie, Barraud, Quentin, Lacour, Stéphanie P., Levine, Ariel J., Wagner, Fabien, Bloch, Jocelyne, Squair, Jordan W., and Courtine, Grégoire

Published
2022
Full Text
View/download PDF

34. Case 15: Non-lesional Temporal Epilepsy

Author

Garibotto, Valentina, Vargas, Maria Isabel, Prior, John O., Rossetti, Andrea O., Vulliemoz, Serge, Seeck, Margitta, Varrone, Andrea, editor, Morbelli, Silvia, editor, and Garibotto, Valentina, editor

Published
2022
Full Text
View/download PDF

38. Head and neck tumor segmentation in PET/CT: The HECKTOR challenge

Author

Oreiller, Valentin, Andrearczyk, Vincent, Jreige, Mario, Boughdad, Sarah, Elhalawani, Hesham, Castelli, Joel, Vallières, Martin, Zhu, Simeng, Xie, Juanying, Peng, Ying, Iantsen, Andrei, Hatt, Mathieu, Yuan, Yading, Ma, Jun, Yang, Xiaoping, Rao, Chinmay, Pai, Suraj, Ghimire, Kanchan, Feng, Xue, Naser, Mohamed A., Fuller, Clifton D., Yousefirizi, Fereshteh, Rahmim, Arman, Chen, Huai, Wang, Lisheng, Prior, John O., and Depeursinge, Adrien

Published
2022
Full Text
View/download PDF

46. Fully Automatic Head and Neck Cancer Prognosis Prediction in PET/CT

Author

Fontaine, Pierre, Andrearczyk, Vincent, Oreiller, Valentin, Castelli, Joël, Jreige, Mario, Prior, John O., Depeursinge, Adrien, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Syeda-Mahmood, Tanveer, editor, Li, Xiang, editor, Madabhushi, Anant, editor, Greenspan, Hayit, editor, Li, Quanzheng, editor, Leahy, Richard, editor, Dong, Bin, editor, and Wang, Hongzhi, editor

Published
2021
Full Text
View/download PDF

47. Multi-task Deep Segmentation and Radiomics for Automatic Prognosis in Head and Neck Cancer

Author

Andrearczyk, Vincent, Fontaine, Pierre, Oreiller, Valentin, Castelli, Joel, Jreige, Mario, Prior, John O., Depeursinge, Adrien, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Rekik, Islem, editor, Adeli, Ehsan, editor, Park, Sang Hyun, editor, and Schnabel, Julia, editor

Published
2021
Full Text
View/download PDF

48. Overview of the HECKTOR Challenge at MICCAI 2020: Automatic Head and Neck Tumor Segmentation in PET/CT

Author

Andrearczyk, Vincent, Oreiller, Valentin, Jreige, Mario, Vallières, Martin, Castelli, Joel, Elhalawani, Hesham, Boughdad, Sarah, Prior, John O., Depeursinge, Adrien, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Andrearczyk, Vincent, editor, Oreiller, Valentin, editor, and Depeursinge, Adrien, editor

Published
2021
Full Text
View/download PDF

50. Spatial Distribution of Recurrence and Long-Term Toxicity Following Dose Escalation to the Dominant Intra-Prostatic Nodule for Intermediate-High Risk Prostate Cancer: Insights from a Phase I/II Study

Author

Cloître, Minna, primary, Benkhaled, Sofian, additional, Boughdad, Sarah, additional, Schaefer, Niklaus, additional, Prior, John O., additional, Zeverino, Michele, additional, Berthold, Dominik, additional, Tawadros, Thomas, additional, Meuwly, Jean-Yves, additional, Martel, Paul, additional, Rohner, Chantal, additional, Heym, Leonie, additional, Duclos, Frederic, additional, Vallet, Véronique, additional, Valerio, Massimo, additional, Bourhis, Jean, additional, and Herrera, Fernanda, additional

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results