Wintersperger Bernd J, Sincleair Spencer, Runge Val M, Dietrich Olaf, Huber Armin, Reiser Maximilian F, Schoenberg Stefan O
Department of Clinical Radiology, University Hospitals-Grosshadern, Ludwig-Maximilians-University, Munich, Germany.
Eur Radiol. 2007 Jan;17(1):73-80. doi: 10.1007/s00330-006-0259-5. Epub 2006 Apr 22.
The purpose of our study was to evaluate the accuracy of a multislice cine magnetic resonance imaging (MRI) technique with parallel imaging in regard to global and regional left ventricular function. Forty-two individuals underwent cine MRI on a 1.5-tesla scanner. Cine MRI used a steady-state free precession technique and was performed as a single-slice technique (nonTSENSE cine) and an accelerated multislice technique (TSENSE cine) with five slices per breath-hold. End diastolic volume (EDV), end systolic volume (ESV), and ejection fraction (EF) were evaluated for all data sets and in regard to regional wall motion and regional wall motion analysis, and quantitative regional wall thickness and systolic thickening were also assessed. EDV, ESV, and EF based on TSENSE cine showed excellent correlation to the nonTSENSE cine approach (all r(2)=0.99, P<0.001). While EDV evaluations showed a small underestimation for TSENSE cine, ESV and EF showed accurate results compared with nonTSENSE cine. Both readers showed good agreement (kappa=0.72) in regional wall motion assessment comparing both techniques. Data acquisition for the multislice approach was significantly shorter ( approximately 75%) that in single-slice cine. We conclude that accurate evaluation of regional wall motion and left ventricular EF is possible using accelerated multislice cine MR with high spatial and temporal resolution.
我们研究的目的是评估一种采用并行成像的多层电影磁共振成像（MRI）技术在评估左心室整体和局部功能方面的准确性。42名个体在一台1.5特斯拉扫描仪上接受了电影MRI检查。电影MRI采用稳态自由进动技术，分别作为单层面技术（非敏感性编码电影）和加速多层技术（敏感性编码电影）进行，后者每次屏气采集5层图像。对所有数据集评估舒张末期容积（EDV）、收缩末期容积（ESV）和射血分数（EF），并进行局部室壁运动及局部室壁运动分析，同时评估局部室壁厚度和收缩期增厚情况。基于敏感性编码电影的EDV、ESV和EF与非敏感性编码电影方法具有极好的相关性（所有r² = 0.99，P < 0.001）。虽然基于敏感性编码电影的EDV评估有轻微低估，但ESV和EF与非敏感性编码电影相比结果准确。在比较两种技术的局部室壁运动评估中，两位阅片者均显示出良好的一致性（kappa = 0.72）。多层方法的数据采集时间明显短于单层面电影（约75%）。我们得出结论，使用具有高空间和时间分辨率的加速多层电影磁共振成像能够准确评估局部室壁运动和左心室EF。
