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Focal Deformity of the Cranial Nerves Observed on Multislice Motion-Sensitized Driven Equilibrium (MSDE) in Patients With Neurovascular Compression

Kanoto, Masafumi MD, PhD; Hosoya, Takaaki MD, PhD; Oda, Atsuko MD; Honma, Tsuguo MD, PhD; Sugai, Yukio MD, PhD

Journal of Computer Assisted Tomography: January/February 2012 - Volume 36 - Issue 1 - p 121–124
doi: 10.1097/RCT.0b013e3182416f3b

Objective Our purpose is to demonstrate the deformity of the cranial nerves by arterial compression using a novel technique, multislice motion-sensitized driven equilibrium (MSDE).

Methods Subjects were 10 patients with neurovascular compression (5 patients with trigeminal neuralgia and 5 patients with hemifacial spasm). We observed the existence and extent of deformity of nerves by MSDE. Afterward, we compared operative findings with preoperative imaging findings and evaluated the validity of the latter.

Results All compressing, blood vessels could be correctly identified through preoperative evaluation. Of all patients, 7 showed deformity of the cranial nerves, which was consistent with operative findings except in one case. In postoperative evaluation, patients’ neurological symptoms improved and the deformity disappeared. Three patients did not show deformity on preoperative MSDE images. In these patients, neural compression was also not observed during the operation.

Conclusions The deformity of cranial nerves in patients with neurovascular compression was clearly shown using MSDE.

Abbreviation CT - computed tomography

IVH - intraventricular hemorrhage

ICH - intracerebral hemorrhage

DICOM - Digital Imaging and Communications in Medicine

DSI - dice statistical index

CLEAR-IVH - Clot Lysis Evaluating Accelerated Resolution of Intraventricular Hemorrhage Trial

GT_Vol - ground truth volume

Seg_Vol - segmented volume

min - minimum

max - maximum

From the Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, Yamagata, Japan.

Received for publication July 21, 2011; accepted October 5, 2011.

Reprints: Masafumi Kanoto, MD, Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, Iida-Nishi 2-2-2, Yamagata, Japan 990-9585 (e-mail:

This work was supported by a grant-in-aid from the Global COE program of the Japan Society for the Promotion of Science.

The authors report no conflicts of interest.

© 2012 Lippincott Williams & Wilkins, Inc.