Dataset Information

Meyer's loop tractography for image-guided surgery depends on imaging protocol and hardware.

ABSTRACT:

Introduction

Surgical resection is an effective treatment for temporal lobe epilepsy but can result in visual field defects. This could be minimized if surgeons knew the exact location of the anterior part of the optic radiation (OR), the Meyer's loop. To this end, there is increasing prevalence of image-guided surgery using diffusion MRI tractography. Despite considerable effort in developing analysis methods, a wide discrepancy in Meyer's loop reconstructions is observed in the literature. Moreover, the impact of differences in image acquisition on Meyer's loop tractography remains unclear. Here, while employing the same state-of-the-art analysis protocol, we explored the extent to which variance in data acquisition leads to variance in OR reconstruction.

Methods

Diffusion MRI data were acquired for the same thirteen healthy subjects using standard and state-of-the-art protocols on three scanners with different maximum gradient amplitudes (MGA): Siemens Connectom (MGA?=?300 mT/m); Siemens Prisma (MGA?=?80 mT/m) and GE Excite-HD (MGA?=?40 mT/m). Meyer's loop was reconstructed on all subjects and its distance to the temporal pole (ML-TP) was compared across protocols.

Results

A significant effect of data acquisition on the ML-TP distance was observed between protocols (p?ConclusionWe showed that variance in data acquisition leads to substantive variance in OR tractography. This has direct implications for neurosurgical planning, where part of the OR is at risk due to an under-estimation of its location using conventional acquisition protocols.

SUBMITTER: Chamberland M

PROVIDER: S-EPMC6096050 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Meyer's loop tractography for image-guided surgery depends on imaging protocol and hardware.

Chamberland Maxime M Tax Chantal M W CMW Jones Derek K DK

NeuroImage. Clinical 20180813

<h4>Introduction</h4>Surgical resection is an effective treatment for temporal lobe epilepsy but can result in visual field defects. This could be minimized if surgeons knew the exact location of the anterior part of the optic radiation (OR), the Meyer's loop. To this end, there is increasing prevalence of image-guided surgery using diffusion MRI tractography. Despite considerable effort in developing analysis methods, a wide discrepancy in Meyer's loop reconstructions is observed in the literat ...[more]

PMID: 30128284

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Dataset Information

Meyer's loop tractography for image-guided surgery depends on imaging protocol and hardware.

Introduction

Methods

Results

Publications

Meyer's loop tractography for image-guided surgery depends on imaging protocol and hardware.

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