TY - JOUR
T1 - Glioblastoma and radiotherapy
T2 - A multicenter AI study for Survival Predictions from MRI (GRASP study)
AU - Chelliah, Alysha
AU - Wood, David A.
AU - Canas, Liane S.
AU - Shuaib, Haris
AU - Currie, Stuart
AU - Fatania, Kavi
AU - Frood, Russell
AU - Rowland-Hill, Chris
AU - Thust, Stefanie
AU - Wastling, Stephen J.
AU - Tenant, Sean
AU - McBain, Catherine
AU - Foweraker, Karen
AU - Williams, Matthew
AU - Wang, Qiquan
AU - Roman, Andrei
AU - Dragos, Carmen
AU - MacDonald, Mark
AU - Lau, Yue Hui
AU - Linares, Christian A.
AU - Bassiouny, Ahmed
AU - Luis, Aysha
AU - Young, Thomas
AU - Brock, Juliet
AU - Chandy, Edward
AU - Beaumont, Erica
AU - Lam, Tai Chung
AU - Welsh, Liam
AU - Lewis, Joanne
AU - Mathew, Ryan
AU - Kerfoot, Eric
AU - Brown, Richard
AU - Beasley, Daniel
AU - Glendenning, Jennifer
AU - Brazil, Lucy
AU - Swampillai, Angela
AU - Ashkan, Keyoumars
AU - Ourselin, Sébastien
AU - Modat, Marc
AU - Booth, Thomas C.
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/6/1
Y1 - 2024/6/1
N2 - Background. The aim was to predict survival of glioblastoma at 8 months after radiotherapy (a period allowing for completing a typical course of adjuvant temozolomide), by applying deep learning to the first brain MRI after radiotherapy completion. Methods. Retrospective and prospective data were collected from 206 consecutive glioblastoma, isocitrate dehydrogenase -wildtype patients diagnosed between March 2014 and February 2022 across 11 UK centers. Models were trained on 158 retrospective patients from 3 centers. Holdout test sets were retrospective (n = 19; internal validation), and prospective (n = 29; external validation from 8 distinct centers). Neural network branches for T2weighted and contrast-enhanced T1-weighted inputs were concatenated to predict survival. A nonimaging branch (demographics/MGMT/treatment data) was also combined with the imaging model. We investigated the influence of individual MR sequences; nonimaging features; and weighted dense blocks pretrained for abnormality detection. Results. The imaging model outperformed the nonimaging model in all test sets (area under the receiver-operating characteristic curve, AUC P = .038) and performed similarly to a combined imaging/nonimaging model (P > .05). Imaging, nonimaging, and combined models applied to amalgamated test sets gave AUCs of 0.93, 0.79, and 0.91. Initializing the imaging model with pretrained weights from 10 000s of brain MRIs improved performance considerably (amalgamated test sets without pretraining 0.64; P = .003). Conclusions. A deep learning model using MRI images after radiotherapy reliably and accurately determined survival of glioblastoma. The model serves as a prognostic biomarker identifying patients who will not survive beyond a typical course of adjuvant temozolomide, thereby stratifying patients into those who might require early second-line or clinical trial treatment.
AB - Background. The aim was to predict survival of glioblastoma at 8 months after radiotherapy (a period allowing for completing a typical course of adjuvant temozolomide), by applying deep learning to the first brain MRI after radiotherapy completion. Methods. Retrospective and prospective data were collected from 206 consecutive glioblastoma, isocitrate dehydrogenase -wildtype patients diagnosed between March 2014 and February 2022 across 11 UK centers. Models were trained on 158 retrospective patients from 3 centers. Holdout test sets were retrospective (n = 19; internal validation), and prospective (n = 29; external validation from 8 distinct centers). Neural network branches for T2weighted and contrast-enhanced T1-weighted inputs were concatenated to predict survival. A nonimaging branch (demographics/MGMT/treatment data) was also combined with the imaging model. We investigated the influence of individual MR sequences; nonimaging features; and weighted dense blocks pretrained for abnormality detection. Results. The imaging model outperformed the nonimaging model in all test sets (area under the receiver-operating characteristic curve, AUC P = .038) and performed similarly to a combined imaging/nonimaging model (P > .05). Imaging, nonimaging, and combined models applied to amalgamated test sets gave AUCs of 0.93, 0.79, and 0.91. Initializing the imaging model with pretrained weights from 10 000s of brain MRIs improved performance considerably (amalgamated test sets without pretraining 0.64; P = .003). Conclusions. A deep learning model using MRI images after radiotherapy reliably and accurately determined survival of glioblastoma. The model serves as a prognostic biomarker identifying patients who will not survive beyond a typical course of adjuvant temozolomide, thereby stratifying patients into those who might require early second-line or clinical trial treatment.
KW - artificial intelligence
KW - deep learning
KW - glioblastoma
KW - magnetic resonance imaging
KW - survival
UR - http://www.scopus.com/inward/record.url?scp=85195226563&partnerID=8YFLogxK
U2 - 10.1093/neuonc/noae017
DO - 10.1093/neuonc/noae017
M3 - Article
C2 - 38285679
AN - SCOPUS:85195226563
SN - 1522-8517
VL - 26
SP - 1138
EP - 1151
JO - Neuro-oncology
JF - Neuro-oncology
IS - 6
ER -