Real-Time Volumetric Imaging of Human Heart Without Electrocardiographic Gating by 256-Detector Row Computed Tomography: Initial Experience
Real-Time Volumetric Imaging of Human Heart Without Electrocardiographic Gating by 256-Detector Row Computed Tomography: Initial Experience
复制标题
通过 256 探测器行计算机断层扫描对无需心电门控的人体心脏进行实时体积成像：初步经验
DOI：
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发表时间：
2005
影响因子：
1.3
通讯作者：
M. Kusakabe
中科院分区：
文献类型：
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作者：
C. Kondo;S. Mori;M. Endo;K. Kusakabe;N. Suzuki;A. Hattori;M. Kusakabe
目的：探讨无心电图门控的256位排锥束计算机断层扫描（256CBCT）的可行性。方法：对2名健康男性志愿者进行256CBCT增强扫描。探测器的数量为912 × 256个，每个探测器在旋转中心的尺寸约为0.5 mm × 0.5 mm。经Feldkamp-Davis-Kress算法重建后，颅侧覆盖面积约为100mm。使用半扫描算法的有效时间分辨率为500毫秒。结果：左心室心肌连续增强。右、左冠状动脉近端和远端段均无明显模糊。虽然电影图像上的左室壁运动随着时间的推移并不平滑，但可以测量心室容积和射血分数。结论：使用256CBCT，可以在单次采集期间同时显示冠状动脉，心肌灌注和心室收缩。
Objective: The feasibility of human cardiac imaging using a prototype 256-detector row cone-beam computed tomography (256CBCT) scanner without electrocardiographic gating was examined. Methods: Two healthy male volunteers were examined by contrast-enhanced 256CBCT. The number of detectors was 912 × 256, each measuring approximately 0.5 mm × 0.5 mm at the center of rotation. The craniocaudal coverage was approximately 100 mm after reconstruction by the Feldkamp-Davis-Kress algorithm. The effective time resolution was 500 milliseconds using a half-scan algorithm. Results: Serial enhancement of the left ventricular myocardium was detected. The right and left coronary arteries at proximal and distal segments were depicted without significant blurring. Although the left ventricular wall motion on cine images was not smooth over time, it was possible to measure ventricular volume and ejection fraction. Conclusions: Using the 256CBCT, it was possible to visualize the coronary arteries, myocardial perfusion, and ventricular contraction simultaneously during a single acquisition.