Rothpearl A, Frager D, Subramanian A, Bashist B, Baer J, Kay C, Cooke K, Raia C
Department of Radiology, St Lukes/Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York, NY 10025.
Radiology. 1995 Jan;194(1):125-30. doi: 10.1148/radiology.194.1.7997538.
To evaluate a magnetic resonance (MR) technique for depicting the kidneys and urinary tract.
Fourteen patients with urinary tract obstruction and 20 without obstructions were examined with a modified, heavily T2-weighted fast spin-echo pulse sequence (MR urography). In addition, six healthy volunteers underwent modified MR urography with intravenous administration of furosemide and ureteral compression prior to imaging.
MR urography provided high-resolution images of the kidneys and urinary tract in all patients with obstruction with intact collecting systems. Anatomic anomalies were depicted in two patients. Intraluminal neoplasia was well demonstrated in both obstructed and nonobstructed systems (n = 4). Furosemide-enhanced MR urography provided fine anatomic and functional detail of both the kidneys and urinary tract (n = 6).
MR urography may provide an alternative to more conventional urinary tract imaging techniques. It does not require ionizing radiation or iodinated contrast material. When combined with furosemide and ureteral compression, MR urography provides fine detail and reflects function.
评估一种用于描绘肾脏和尿路的磁共振（MR）技术。
对14例尿路梗阻患者和20例无梗阻患者采用改良的重T2加权快速自旋回波脉冲序列（MR尿路造影）进行检查。此外，6名健康志愿者在成像前静脉注射速尿并进行输尿管压迫后接受改良的MR尿路造影。
MR尿路造影为所有集合系统完整的梗阻患者提供了肾脏和尿路的高分辨率图像。两名患者显示出解剖异常。在梗阻和非梗阻系统中均清晰显示了腔内肿瘤（n = 4）。速尿增强的MR尿路造影提供了肾脏和尿路精细的解剖和功能细节（n = 6）。
MR尿路造影可能为更传统的尿路成像技术提供一种替代方法。它不需要电离辐射或碘化造影剂。当与速尿和输尿管压迫相结合时，MR尿路造影可提供精细细节并反映功能。
