Evaluation of Chronic Inflammatory Demyelinating Polyneuropathy: 3D Nerve-sheath Signal Increased with Inked Rest-tissue Rapid Acquisition of Relaxation Enhancement Imaging (3D SHINKEI)

Overview

Journal Eur Radiol

Specialty Radiology

Date 2016 May 23

PMID 27208993

Citations 15

Authors

Akio Hiwatashi

Osamu Togao

Koji Yamashita

Kazufumi Kikuchi

Hidenori Ogata

Ryo Yamasaki

Masami Yoneyama

Jun-Ichi Kira

Hiroshi Honda

Affiliations

Soon will be listed here.

Abstract

Objective: To evaluate the usefulness of 3D nerve-sheath signal increased with inked rest-tissue rapid acquisition of relaxation enhancement imaging (SHINKEI) in patients with chronic inflammatory demyelinating polyneuropathy (CIDP).

Methods: This institutional review board-approved retrospective study included 14 CIDP patients and nine normal subjects. The signal-to-noise ratio (SNR), contrast ratio (CR), and the size of the cervical ganglions and roots were measured by two raters.

Results: The SNRs of the ganglions and roots were larger in patients with CIDP (9.55 ± 3.87 and 9.81 ± 3.64) than in normal subjects (7.21 ± 2.42 and 5.70 ± 2.14, P < 0.0001, respectively). The CRs of the ganglions and roots were larger in patients with CIDP (0.77 ± 0.08 and 0.68 ± 0.12) than in normal subjects (0.72 ± 0.07 and 0.53 ± 0.11, P < 0.0001, respectively). The sizes of the ganglions and the roots were larger in patients with CIDP (6.44 ± 1.61 mm and 4.89 ± 1.94 mm) than in normal subjects (5.24 ± 1.02 mm and 3.39 ± 0.80 mm, P < 0.0001, respectively).

Conclusions: Patients with CIDP could be distinguished from controls on 3D SHINKEI.

Key Points: • 3D SHINKEI could visualize brachial plexus with high spatial resolution. • CIDP patients showed increased SNR, CR, and the size of brachial plexus. • 3D SHINKEI could discriminate CIDP patients from normal subjects.

Citing Articles

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