Quantitative T₂ -mapping magnetic resonance imaging for assessment of muscle motor unit recruitment patterns.

ABSTRACT:

Introduction

In this study, we aimed to determine whether muscle transverse relaxation time (T₂ ) magnetic resonance (MR) mapping results correlate with motor unit loss, as defined by motor unit recruitment patterns on electromyography (EMG).

Methods

EMG and 3-Tesla MRI exams were acquired no more than 31 days apart in subjects referred for peripheral nerve MRI. Two musculoskeletal radiologists qualitatively graded T₂ -weighted, fat-suppressed sequences for severity of muscle edema-like patterns and manually placed regions of interest within muscles to obtain T₂ values from T₂ -mapping sequences. Concordance was calculated between qualitative and quantitative MR grades and EMG recruitment categories (none, discrete, decreased) as w

SUBMITTER: Argentieri EC 

PROVIDER: S-EPMC8053673 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature