Aortoiliac disease: Two‐dimensional inflow MR angiography with lipid suppression
Aortoiliac disease: Two‐dimensional inflow MR angiography with lipid suppression
复制标题
主髂疾病：二维流入磁共振血管造影与脂质抑制
DOI：
10.1002/jmri.1880030605
复制
发表时间：
1993
影响因子：
4.4
通讯作者：
G. Pohost
中科院分区：
文献类型：
--
作者：
S. Mulligan;M. Doyle;T. Matsuda;D. B. Koslin;P. Kenney;R. Barton;G. Pohost
为了抑制脂质信号，开发了一种磁共振(MR)成像策略，SLIP(空间分离的脂质预饱和)，它可以与现有的MR成像和MR血管成像技术相结合。作者报告了这项技术的临床应用，并对有和无滑脱的二维流入磁共振血管成像和X-射线血管成像在主动脉-髂部疾病患者中的应用进行了三重比较。SLIP改善了动脉节段的可视化，63个动脉节段中有50个(79%)可见，而非SLIP组63个动脉节段中有41个(65%)可见。滑动策略有助于描述缓慢或湍流，因为脂质信号被抑制，而血管内信号不受干扰。由于背景脂肪信号强度的降低和最大强度投影算法的使用，图像质量得到了改善。与X线血管造影术相比，非滑动MR血管造影术诊断直径缩小50%~100%的病变的敏感性和特异性分别为60%和56%，而滑动MR血管造影术的敏感性和特异性分别为53%和67%。
A magnetic resonance (MR) imaging strategy, SLIP (spatially separated lipid presaturation), which can be incorporated into existing MR imaging and MR angiographic techniques, has been developed to suppress lipid signal. The authors report the clinical application of this technique, with a triple comparison of two‐dimensional inflow MR angiography, with and without SLIP, and x‐ray angiography in patients with aortoiliac disease. SLIP improved visualization of arterial segments, with 50 of 63 (79%) arterial segments visualized versus 41 of 63 (65%) for non‐SLIP MR angiography. The SLIP strategy aids in the depiction of slow or turbulent flow, because the lipid signal is suppressed while the intravascular signal is left undisturbed. Image quality improves because of the combination of decreased background lipid signal intensity and use of the maximum‐intensity‐projection algorithm. Compared with x‐ray arteriography, non‐SLIP MR angiography had a sensitivity and specificity of 60% and 56%, respectively, for detection of lesions with 50%–100% diameter reduction, while SLIP MR angiography had a sensitivity and specificity, respectively, of 53% and 67%.