Fluoroscopically triggered contrast-enhanced three-dimensional MR angiography with elliptical centric view order: Application to the renal arteries
Fluoroscopically triggered contrast-enhanced three-dimensional MR angiography with elliptical centric view order: Application to the renal arteries
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DOI：
10.1148/radiology.205.1.9314975
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发表时间：
1997-10-01
期刊：
影响因子：
19.7
通讯作者：
Ehman, RL
中科院分区：
文献类型：
--
作者：
Wilman, AH;Riederer, SJ;Ehman, RL
目得：通过使用结合二维实时MR荧光透视和椭圆中心视图顺序的3D MR血管造影采集的技术，确定获得肾动脉动脉期对比剂增强三维（3D）磁共振（MR）血管造影片的可靠性。材料和方法：25例疑似肾动脉疾病的连续患者采用荧光透视触发技术进行评价，平均剂量为0.18 mmol/L。kg钆特醇。左肾静脉抑制、下腔静脉抑制、运动伪影和肾动脉描绘的图像质量均采用5分量表进行评价（1 =最佳）。结果：荧光触发技术产生的左肾静脉增强比常规方法少4.6倍（P <0.01）。与透视触发技术，肾动脉的可视化是足够的诊断24例（96%）和总体结果（1-3分的所有标准）是在22例（88%.CONCLUSION）的质量良好：与透视触发MR血管造影技术，高质量，动脉期，相对运动免疫血管造影可以常规获得。
PURPOSE: To determine the reliability of obtaining arterial-phase, contrast-material-enhanced three-dimensional (3D) magnetic resonance (MR) angiograms of the renal arteries by using a technique that combines two-dimensional real-time MR fluoroscopy and a 3D MR angiographic acquisition with elliptical centric view order.MATERIALS AND METHODS: Twenty-five consecutive patients suspected of having renal artery disease were evaluated with the fluoroscopically triggered technique by using a mean dose of 0.18 mmol/kg gadoteridol. Left renal vein suppression, inferior vena cava suppression, motion artifact, and image quality for depiction of the renal arteries were each evaluated on a five-point scale (1 = best). The findings were compared with those of another 25 consecutive patients who underwent conventional gadolinium-enhanced 3D MR angiography.RESULTS: The fluoroscopically triggered technique produced 4.6 times less left renal vein enhancement than did the conventional method (P < .01). With the fluoroscopically triggered technique, visualization of the renal arteries was adequate for diagnosis in 24 patients (96%) and the overall result (score of 1-3 for all criteria) was of good quality in 22 patients (88%).CONCLUSION: With this fluoroscopically triggered MR angiographic technique, high-quality, arterial phase, relatively motion immune angiograms can be routinely obtained.