Clinical Applications for Diffusion MRI and Tractography of Cranial Nerves Within the Posterior Fossa: A Systematic Review

Frontiers in Neuroscience
Jonathan ShapeySebastien Ourselin

Abstract

Objective: This paper presents a systematic review of diffusion MRI (dMRI) and tractography of cranial nerves within the posterior fossa. We assess the effectiveness of the diffusion imaging methods used and examine their clinical applications. Methods: The Pubmed, Web of Science and EMBASE databases were searched from January 1st 1997 to December 11th 2017 to identify relevant publications. Any study reporting the use of diffusion imaging and/or tractography in patients with confirmed cranial nerve pathology was eligible for selection. Study quality was assessed using the Methodological Index for Non-Randomized Studies (MINORS) tool. Results: We included 41 studies comprising 16 studies of patients with trigeminal neuralgia (TN), 22 studies of patients with a posterior fossa tumor and three studies of patients with other pathologies. Most acquisition protocols used single-shot echo planar imaging (88%) with a single b-value of 1,000 s/mm2 (78%) but there was significant variation in the number of gradient directions, in-plane resolution, and slice thickness between studies. dMRI of the trigeminal nerve generated interpretable data in all cases. Analysis of diffusivity measurements found significantly lower fractional anisotrop...Continue Reading

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Citations

Dec 15, 2020·British Journal of Neurosurgery·Sebastian M ToescuChristopher A Clark
Jan 30, 2021·The British Journal of Radiology·Fréderic Van der CruyssenJan Casselman
Jul 22, 2020·Clinical Radiology·P Touska, S E J Connor
Jul 20, 2021·Computers in Biology and Medicine·Oeslle LucenaSebastien Ourselin

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