Goto Yoshitaka, Ishida Masaki, Takase Shinichi, Sigfridsson Andreas, Uno Mio, Nagata Motonori, Ichikawa Yasutaka, Kitagawa Kakuya, Sakuma Hajime
Department of Radiology, Mie University Hospital, Tsu, Mie, Japan.
Department of Radiology, Mie University Hospital, Tsu, Mie, Japan.
Am J Cardiol. 2017 May 15;119(10):1542-1547. doi: 10.1016/j.amjcard.2017.02.029. Epub 2017 Feb 28.
The aim of this study was to compare myocardial strain by cardiovascular magnetic resonance feature tracking (CMR-FT) to those derived from displacement encoding with stimulated echoes (DENSE) in patients with acute myocardial infarction (AMI). Twenty patients (65 pa13 years) with AMI underwent cine, DENSE, black-blood T2-weighted and late gadolinium enhancement CMR at 1.5 T. Global and segmental strain was determined by CMR-FT analysis and DENSE on matched 3 short-axis planes. Global circumferential strain by CMR-FT showed a good agreement with that by DENSE (r = 0.85, p <0.001; bias 0.02, limits of agreement -0.03 to 0.06). For segmental circumferential strain, r coefficient between CMR-FT and DENSE was 0.61 (p <0.001) with bias of 0.02, limits of agreement of -0.07 to 0.11. Regional circumferential strain determined by CMR-FT in infarct segments (-0.08 ± 0.05) was significantly altered compared with that in remote normal segments (-0.15 ± 0.05, p <0.001). CMR-FT measurement of regional and global circumferential strain showed good agreement with DENSE in patients with AMI.
本研究的目的是比较急性心肌梗死（AMI）患者中通过心血管磁共振特征追踪（CMR-FT）获得的心肌应变与通过刺激回波位移编码（DENSE）获得的心肌应变。20例（年龄65±13岁）AMI患者在1.5T条件下接受了电影成像、DENSE、黑血T2加权成像和延迟钆增强CMR检查。在匹配的3个短轴平面上，通过CMR-FT分析和DENSE确定整体和节段性应变。CMR-FT测得的整体圆周应变与DENSE测得的结果具有良好的一致性（r = 0.85，p <0.001；偏差0.02，一致性界限为-0.03至0.06）。对于节段性圆周应变，CMR-FT与DENSE之间的r系数为0.61（p <0.001），偏差为0.02，一致性界限为-0.07至0.11。CMR-FT测定的梗死节段区域圆周应变（-0.08±0.05）与远隔正常节段（-0.15±0.05，p <0.001）相比有显著改变。在AMI患者中，CMR-FT对区域和整体圆周应变的测量结果与DENSE具有良好的一致性。
