Human coronary arteries: projection angiograms reconstructed from breath-hold two-dimensional MR images.
Human coronary arteries: projection angiograms reconstructed from breath-hold two-dimensional MR images.
复制标题
人类冠状动脉：根据屏气二维 MR 图像重建的投影血管造影。
DOI：
10.1148/radiology.187.3.8497620
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发表时间：
1993
期刊：
影响因子：
19.7
通讯作者：
Li,W
中科院分区：
文献类型：
--
作者：
Edelman,RR;Manning,WJ;Pearlman,J;Li,W
作者试图从连续屏气二维MR图像中绘制投影磁共振（MR）血管造影片，描绘相当长的人体冠状动脉。使用分段梯度回忆序列收集右冠状动脉和左冠状动脉前降支的断层扫描图像，该序列包括脂肪抑制和患者在表面线圈上的俯卧位。在编辑图像以消除重叠腔室信号并重新对齐图像后，应用最大强度投影算法创建投影血管造影片。对于10支无严重狭窄的冠状动脉，投影MR血管造影的可视化长度为109 mm +/- 29（平均值+/-估计标准误），而传统冠状动脉血管造影的可视化长度为121 mm +/- 29（范围分别为62-147 mm和70-180 mm）。常规血管造影线性回归显示血管长度为MR血管造影长度的1.03倍，相关性良好（r = 0.8）。结果表明，血管长度的测量与传统和MR血管造影之间的相关性良好。
The authors sought to render projection magnetic resonance (MR) angiograms depicting a substantial length of human coronary arteries from sequential breath-hold two-dimensional MR images. Tomographic images of the right and left anterior descending coronary arteries were collected with use of a segmented gradient-recalled sequence that incorporated fat suppression and prone positioning of the patient over a surface coil. After editing the images to eliminate overlapping chamber signals and after realigning the images, a maximum-intensity-projection algorithm was applied to create projection angiograms. For the 10 coronary arteries without severe narrowing, visualized length with projection MR angiography was 109 mm +/- 29 (mean +/- standard error of estimate) versus 121 mm +/- 29 with conventional coronary angiography (ranges, 62-147 mm and 70-180 mm, respectively). At conventional angiography linear regression indicated vessel length to be 1.03 times the length depicted at MR angiography with good correlation (r = .8). Results indicate good correlation between measurements of vessel length with both conventional and MR angiography.