Verswijvel G A, Oyen R H, Van Poppel H P, Goethuys H, Maes B, Vaninbrouckx J, Bosmans H, Marchal G
Department of Radiology, University Hospitals, Catholic University of Leuven, Belgium.
Eur Radiol. 2000;10(10):1614-9. doi: 10.1007/s003300000536.
The aim of this study was to evaluate an "all-in-one" MR procedure to examine the kidneys, the renal vascular supply and renal perfusion, and the urinary tract. In 64 patients (58 with urologic disease and 6 healthy volunteers), MR was performed including: (a) T1- and T2-weighted imaging; (b) 3D contrast-enhanced MR angiography (MRA), including the renal arteries, renal veins, as well as renal perfusion; and (c) 3D contrast-enhanced MR urography (MRU) in the coronal and sagittal plane. For the latter, low- and high-resolution images were compared. Prior to gadolinium injection, 0.1 mg/kg body weight of furosemide was administered intravenously. The results were compared with correlative imaging modalities (ultrasonography, intravenous urography, CT), ureterorenoscopy and/or surgical-pathologic findings. Visualization of the renal parenchyma, the vascular supply, and the collecting system was adequate in all cases, both in nondilated and in dilated systems and irrespective of the renal function. One infiltrating urothelial cancer was missed; there was one false-positive urothelial malignancy. Different MR techniques can be combined to establish an all-in-one imaging modality in the assessment of diseases which affect the kidneys and urinary tracts. Continuous refinement of the applied MR techniques and further improvements in spatial resolution is needed to expand the actual imaging possibilities and to create new tracts and challenges in the MR evaluation of urologic disease.
本研究的目的是评估一种“一体化”磁共振成像（MR）检查方法，用于检查肾脏、肾血管供应和肾灌注以及尿路。对64例患者（58例患有泌尿系统疾病，6例为健康志愿者）进行了MR检查，包括：（a）T1加权和T2加权成像；（b）三维对比增强磁共振血管造影（MRA），包括肾动脉、肾静脉以及肾灌注；（c）在冠状面和矢状面进行三维对比增强磁共振尿路造影（MRU）。对于后者，比较了低分辨率和高分辨率图像。在注射钆之前，静脉注射0.1mg/kg体重的呋塞米。将结果与相关成像方式（超声、静脉尿路造影、CT）、输尿管肾镜检查和/或手术病理结果进行比较。在所有病例中，无论肾实质、血管供应和集合系统是否扩张，也无论肾功能如何，均能充分显示。漏诊了1例浸润性尿路上皮癌；有1例假阳性尿路上皮恶性肿瘤。不同的MR技术可以结合起来，建立一种一体化成像方式，用于评估影响肾脏和尿路的疾病。需要不断完善应用的MR技术，并进一步提高空间分辨率，以扩大实际成像可能性，并在泌尿系统疾病的MR评估中创造新的途径和挑战。
