Time-resolved analysis of coronary vein motion and cross-sectional area.
Time-resolved analysis of coronary vein motion and cross-sectional area.
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DOI：
10.1002/jmri.22674
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发表时间：
2011-10
影响因子：
4.4
通讯作者：
Oshinski, John N.
中科院分区：
文献类型：
--
作者：
Suever, Jonathan D.;Watson, Pierre J.;Eisner, Robert L.;Lerakis, Stamatios;O'Donnell, Robert E.;Oshinski, John N.
关键词：
量化心动周期期间冠状静脉的低运动周期和横截面积变化，以规划磁共振冠状静脉造影（MRCV）。图像采集自19例冠状动脉疾病（CAD）患者和13例计划进行心脏起搏治疗（CRT）的患者。追踪冠状窦的位移和横截面积，并将低运动期定义为冠状窦位置保持在0.67 mm直径区域内的连续时间点。根据低运动期的相对持续时间，将患者分为收缩期为主或舒张期为主。所有CRT患者均被归类为收缩主导型，其中32%没有单独的舒张期休息。射血分数<35%的冠心病患者均为收缩期优势型，射血分数> 35%的冠心病患者均为舒张期优势型。在77%的受试者中，冠状窦的横截面积在收缩期大于舒张期。冠状窦的运动可用于将患者分类为具有较长的收缩期或舒张期休息期。将CRT患者分类为收缩主导型表明，应在收缩期采集MRCV以进行CRT计划;然而，应对每例患者的低运动周期进行分类，以确保使用正确的周期来最大限度地减少运动伪影。
To quantify periods of low motion and cross-sectional area changes of the coronary veins during the cardiac cycle for planning magnetic resonance coronary venograms (MRCV). Images were acquired from nineteen patients with coronary artery disease (CAD) and thirteen patients scheduled for cardiac resynchronization therapy (CRT). The displacement and cross-sectional area of the coronary sinus was tracked and periods of low motion were defined as consecutive time points during which the position of the coronary sinus remained within a 0.67 mm diameter region. Patients were classified as systolic dominant or diastolic dominant based on the relative duration of their low motion periods. All CRT patients were classified as systolic dominant, and 32% of these had no separate diastolic rest period. All CAD patients with ejection fraction <35% were classified as systolic dominant, while all CAD patients with ejection fraction >35%were diastolic dominant. In 77% of all subjects, the cross-sectional area of the coronary sinus was larger in systole than in diastole. The movement of the coronary sinus can be used to classify patients as either having a longer systolic or diastolic rest period. The classification of the CRT patients as systolic dominant suggests that MRCVs be acquired in systole for CRT planning; however, each patient’s low motion periods should be categorized to ensure the correct period is being utilized to minimize motion artifacts.
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影响因子：
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作者：
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通讯作者：
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