Muscle & nerve · 2019
Diffusion-weighted magnetic resonance imaging is useful for assessing inflammatory myopathies.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Faruch Marie, Garcia Ana Isabel, Del Amo Montse, Pomes Jaume, Isern Jaime, González Sergio Prieto, Grau Josep María, Milisenda José César, Tomas Xavier
Аннотация
INTRODUCTION: Short tau inversion recovery (STIR) sequences in whole-body MRI are usually used for detecting muscle edema (ME) in inflammatory myopathies. We evaluated b-value 800 diffusion-weighted imaging (b800 DWI).
METHODS: Two radiologists independently and a consensus reader retrospectively reexamined 60 patients with inflammatory myopathies and 15 controls. For each participant, 78 muscles were analyzed with 3 sets of imaging acquisitions: T1-weighted (T1) turbo spin echo and STIR; T1 and DWI; and T1, STIR and DWI. Mean edema per patient was compared between sequences. Agreement was evaluated.
RESULTS: Diffusion-weighted imaging detected more ME compared with STIR (P < 0.001). Agreement between readers was better with both sequences (k = 0.94) than with b800 DWI (k = 0.89) or STIR (k = 0.84) alone.
DISCUSSION: Diffusion-weighted imaging is a valuable add-on for the study of inflammatory myopathies. Muscle Nerve 59:555-555, 2019.
METHODS: Two radiologists independently and a consensus reader retrospectively reexamined 60 patients with inflammatory myopathies and 15 controls. For each participant, 78 muscles were analyzed with 3 sets of imaging acquisitions: T1-weighted (T1) turbo spin echo and STIR; T1 and DWI; and T1, STIR and DWI. Mean edema per patient was compared between sequences. Agreement was evaluated.
RESULTS: Diffusion-weighted imaging detected more ME compared with STIR (P < 0.001). Agreement between readers was better with both sequences (k = 0.94) than with b800 DWI (k = 0.89) or STIR (k = 0.84) alone.
DISCUSSION: Diffusion-weighted imaging is a valuable add-on for the study of inflammatory myopathies. Muscle Nerve 59:555-555, 2019.