PURPOSE: To evaluate the use of dual-phase three-dimensional magnetic resonance (MR) angiography in the preoperative staging of @entity703 . MATERIALS AND METHODS: MR angiography was performed in 18 @entity1 before performance of partial (n = 7), radical (n = 10), or laparoscopic (n = 1) nephrectomy to treat @entity703 . Dynamic, three-dimensional MR angiograms were obtained with @entity25942 enhancement, breath holding, and a three-dimensional spoiled gradient-echo sequence. Images were obtained at 15-second intervals to achieve opacification of arteries and veins. Source, maximum intensity projection, and multiplanar reconstruction images were evaluated. Imaging results were compared with surgical findings. RESULTS: Renal arterial phase MR angiograms depicted 30 of 31 (97%) surgically confirmed renal arteries, with one false-positive result (an artery that arose from an early-branching single main renal artery, interpreted as a separate accessory artery). Renal venous phase MR angiograms depicted all seven instances of renal vein involvement, including extension to the inferior vena cava in two @entity1 . Collateral vessels around the @entity5 , including prominent gonadal veins in three @entity1 , were demonstrated. Additional findings included adenopathy and adrenal and pulmonary metastases. CONCLUSION: Dual-phase MR angiography of the kidney may be a useful technique in depicting renal vessels before nephrectomy.

XXXX : preoperative evaluation with dual-phase three-dimensional MR angiography.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity25942 :: ('MESH:C062402', 'Chemical') :: ['gadoteridol'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity703 :: ('MESH:D007680', 'Disease') :: ['renal cancer']
@entity703 :: (MESH:D007680,Disease) :: ['Renal cancer']
