屏气电影法MRI评价存活心肌的初步研究

Evaluation of myocardial viability with breath-hold cine MR imaging

目的探讨MRI屏气电影成像技术评价存活心肌的价值。方法应用屏气电影法MRI和心肌首过灌注MRI对24例受检者进行检查,分析局部心功能的变化,并将屏气电影法MRI的结果与心肌首过灌注MRI进行比较。结果16例心梗患者的梗死节段室壁运动及室壁厚度异常,在梗塞心肌区内,可逆心肌的心肌增厚率显著高于不可逆心肌。结论屏气电影法MRI对存活心肌的评价具有重要价值。

Objective To investigate the value of breath-hold eine MR imaging in the evaluation of myocardial viability. Methods Eight healthy volunteers and 16 patients with cardiac diseases were studied with breath-hold cine MR imaging. The functional changes of the local myocardium were analyzed.The findings were compared with those of Gd-DTPA enhanced myocardial perfusion imagings. Results In 16 patients, the regional movement and the wall thickness of infarcted segent were abnormal. The wall thieking had significant differences of ischemic myocardium and normal. Conclusion Breath-hold cine MR imaging is an useful metho,t for evaluating the vible myocardium.