Recent developments in muscle imaging of neuromuscular disorders

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Abstract

Purpose of review

In this update, we describe recent findings on imaging techniques used for the analysis and quantification of affected muscles, advances in pattern recognition, and quantitative muscle imaging in clinical studies.

Recent findings

Whole-body muscle MRI and meta-analytical approaches, so-called (hierarchical) heat maps of affected muscles are promising advances compared with commonly applied lower leg pattern recognition approaches. Muscle fat fraction assessments measuring chemical shift differences and T2-relaxation times of separated fat and water components in skeletal muscle are currently the most reliable quantitative muscle imaging techniques. Quantitative muscle MRI detects subclinical disease progression in muscular dystrophies and is a powerful surrogate outcome measure in clinical trials.

Summary

Diagnostic and quantitative muscular imaging techniques are increasingly important for diagnostic workup and for interventional studies in patients with inherited myopathies.

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