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Abstract #3502

Accelerated Glioma characterization with VERDICT MRI: a comparison between deep learning and non-linear least squares fitting

Matteo Figini1,2, Marco Palombo3,4, Michele Bailo5,6, Marcella Callea7, Pietro Mortini5,6, Andrea Falini6,8, Daniel C Alexander1,2, Mara Cercignani3, Antonella Castellano6,8, and Eleftheria Panagiotaki1,2
1Centre for Medical Image Computing, University College London, London, United Kingdom, 2Computer Science, University College London, London, United Kingdom, 3Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom, 4School of Computer Science and Informatics, Cardiff University, Cardiff, United Kingdom, 5Department of Neurosurgery and Gamma Knife Radiosurgery, IRCCS Ospedale San Raffaele, Milano, Italy, 6Vita-Salute San Raffaele University, Milano, Italy, 7Pathology Unit, IRCCS Ospedale San Raffaele, Milano, Italy, 8Neuroradiology Unit and CERMAC, IRCCS Ospedale San Raffaele, Milano, Italy

Synopsis

Keywords: Microstructure, Microstructure, Model fitting, Brain Tumours

Motivation: Complex multi-compartment models of diffusion MRI, as the recent adaptation of VERDICT-MRI for brain tumours, can provide important microstructural information, but traditional fitting is time-consuming and may not be accurate.

Goal(s): To explore the feasibility of deep-learning-based fitting of VERDICT for brain tumours.

Approach: We fit the VERDICT model to data from 15 glioma patients using both traditional and deep-learning approaches. We compared the resulting parameters between the two methods and with histology.

Results: VERDICT estimates from deep-learning and traditional fitting showed a good correlation and reflected histology features. The deep-learning fitting was much faster once the model was trained.

Impact: We have successfully used deep learning to fit the complex VERDICT model for brain tumour microstructure. As deep-learning fitting is much faster and potentially more precise than traditional methods, this could facilitate the clinical application of VERDICT for brain tumours.

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Keywords