Two- and three-dimensional MR coronary angiography with intraarterial injections of contrast agent in dogs: A feasibility study
Two- and three-dimensional MR coronary angiography with intraarterial injections of contrast agent in dogs: A feasibility study
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DOI：
10.1148/radiol.2261011848
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发表时间：
2003-01-01
期刊：
影响因子：
19.7
通讯作者：
Li, DB
中科院分区：
文献类型：
--
作者：
Green, JD;Omary, RA;Li, DB
5只犬动脉内注射造影剂后，用反转恢复技术获得冠状动脉磁共振(MR)图像。获得了时间分辨率为3帧/秒的实时二维投影图像。使用静脉注射所需造影剂的一小部分，获得了由心电图触发的高空间分辨率三维图像。背景组织在所有图像中都被充分抑制。在此实验数据的基础上，二维实时投影成像的最佳造影剂浓度为6%。这项初步工作表明，用所提出的技术进行动脉内注射造影剂增强的磁共振血管成像是可行的。(C)RSNA，2002年。
Magnetic resonance (MR) images of coronary arteries were acquired with an inversion recovery-prepared technique after intraarterial injection of contrast material in five dogs. Real-time two-dimensional projection images were obtained with a temporal resolution of 3 frames per second. Three-dimensional electrocardiographically triggered high-spatial-resolution images were obtained with a fraction of the contrast agent required for intravenous injections. Background tissues were adequately suppressed in all images. On the basis of this experimental data, the optimal contrast agent concentration for two-dimensional real-time projection imaging was 6%. This preliminary work shows that contrast material-enhanced MR angiography with intraarterial injections is feasible with the proposed techniques. (C) RSNA, 2002.