Ho K Y, Leiner T, de Haan M W, Kessels A G, Kitslaar P J, van Engelshoven J M
Department of Diagnostic Radiology, University Hospital Maastricht, Limburg, The Netherlands.
Radiology. 1998 Mar;206(3):683-92. doi: 10.1148/radiology.206.3.9494486.
To evaluate a magnetic resonance (MR) angiographic technique for imaging of the peripheral arteries with gadolinium enhancement.
Moving-bed infusion-tracking MR angiograms were obtained in 15 healthy volunteers and in 28 patients with intermittent claudication before and during slow infusion of contrast material. Lower- and upper-leg and pelvic regions were imaged. Unenhanced images were subtracted from gadolinium-enhanced images, and maximum intensity projection images were generated. Image quality was evaluated subjectively and objectively, and maximum intensity projection images were compared with conventional angiograms, which served as the standard of reference.
Moving-bed infusion-tracking MR angiography proved to be a robust technique, and image quality on maximum intensity projection images was comparable with that on conventional angiograms. Sensitivity and specificity for grading hemodynamically significant stenoses were 93% and 98%, respectively, with excellent interobserver agreement.
Moving-bed infusion-tracking MR angiography can be used to image all peripheral arteries in 4 minutes by using a small amount of contrast material and a conventional 1.5-T MR imager.
评估一种钆增强的磁共振（MR）血管造影技术用于外周动脉成像。
在15名健康志愿者和28名间歇性跛行患者中，于缓慢注入造影剂之前及期间获取移动床灌注追踪MR血管造影。对小腿和大腿以及盆腔区域进行成像。从钆增强图像中减去未增强图像，并生成最大强度投影图像。主观和客观地评估图像质量，并将最大强度投影图像与作为参考标准的传统血管造影进行比较。
移动床灌注追踪MR血管造影被证明是一种可靠的技术，最大强度投影图像的质量与传统血管造影相当。对血流动力学显著狭窄进行分级的敏感性和特异性分别为93%和98%，观察者间一致性良好。
移动床灌注追踪MR血管造影可通过使用少量造影剂和传统的1.5-T MR成像仪在4分钟内对所有外周动脉进行成像。
