平成22年ま粛鼎国幹研究集会派遣報告書

摘要

Exercise-induced muscle activity is essential in sports medicine and rehabilitation medicine, especially for the trunk muscle. Magnetic resonance imaging (MRI) can evaluate muscle activity; transverse relaxation time (T2) of exercised muscle increases compared to that of rested muscle'l Previous studies have proposed the muscle functional magnetic resonance imaging (mfMRI)2> 3), which visualizes muscle activity in enhanced activated muscle. However, to calculate T2, the mfMRI using a spin echo (SE) sequence, which requires an acquisition time lasting several minutes. Furthermore, the body parts that can be studied by mfMRI are limited to the limbs. However, the evaluation of strength training-induced muscle activity also requires examination of the trunk muscle, which has a limitation of scan time. Therefore, the mfMRI needs marked improvement of the time resolution for calculating muscle T2. In order to evaluate trunk muscle activity induced by exercise, we proposed and verified the feasibility of mfMRI using ultrafast imaging (fast-acquired mfMRI: fast-mfMRI or functional T2 mapping)4'. This study evaluated the detect­ability of the slight impact on trunk muscle activity induced by acute exercises.%平成22年5月1日から5月7日までの期間，スウェーテざンのストックホルムのStockholmInternation- alFairsでISMRM・ESMRMBJointAnnualMeeting2010が開催された．ISMRMとは北米を中心とした国際磁気共鳴医学会であり，ESMRMBは欧州磁気共鳴医学生物学会のことである．通常ISMRMは北米で，ESMRMBは欧州で，それぞれ年に一回meeトingを開催しているが，5年に一度欧州の地で共催される．今年は丁度その年であった．MR関連の業者の方の話では，「RNSA（北米放射線学会）がMR関係の商品化をする1年前に話題提供をされることが多いのに比べて，ISMRMはその4,5年前に演題として出されることが多い」とのことであり，私も納得している．