Abstract #3513

Detectability of Exercise-Induced Muscle Activities of Abdominal Oblique Muscle Using Muscle Functional MRI

Noriyuki Tawara¹, Takahiro Ohnishi², Katsuya Maruyama², Vladimir Jellus³, Naoyuki Tamura⁴, Hideyuki Takahashi⁴, Mamoru Niitsu⁵, Atsuto Hoshikawa¹, Kohei Nakajima¹, Toru Okuwaki¹, Takashi Kawahara¹

¹Medical Center, Japan Institute of Sports Sciences, Tokyo, Japan; ²Siemens Japan, Tokyo, Japan; ³Siemens AG, Erlangen, Germany; ⁴Department of Sports Science, Japan Institute of Sports Sciences, Tokyo, Japan; ⁵Department of Radiology, Saitama Medical University, Saitama, Japan

MRI can evaluate muscle activity; T2 of exercised muscle is greater than that of rested muscle. However, it is necessary to improve the temporal resolution of the T2 calculation. The purpose of this study was to evaluate visualization of the trunk muscle activation induced by exercise using DESS sequence. Although the DESS sequence has a temporal resolution as high as can be acquired under single breath-holding, these images have a high spatial resolution. In this study, we presented the detectability of trunk muscle activities by DESS T2 mapping.