We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Renal perfusion abnormality. Coded harmonic angio US with contrast agent.
- Authors
Kim, J H; Eun, H W; Lee, H K; Park, S J; Shin, J H; Hwang, J H; Goo, D E; Choi, D L
- Abstract
<bold>Purpose: </bold>Coded harmonic angio (CHA) US is a recently developed technique that can depict the effects of contrast agents. The purpose of this study was to determine the role of this technique in depicting the enhancement patterns of various renal perfusion abnormalities compared with dynamic CT.<bold>Material and Methods: </bold>During a 6-month period, various renal lesions including renal cell carcinoma (n=12), transitional cell carcinoma (n=5), acute pyelonephritis (n=5), and renal trauma (n=2) were evaluated with CHA US using a microbubble contrast agent. US images were obtained before contrast administration and with a bolus injection of 4 g of microbubble contrast agent (300 mg/ml) every 10 s for 1 min and every minute for 5 min. The contrast enhancement patterns of various renal masses were compared with dynamic CT.<bold>Results: </bold>Of 12 renal cell carcinomas, 9 (75%) showed heterogeneous enhancement and the remaining 3 (25%) showed homogeneous enhancement. Enhancement of more than adjacent renal parenchyma was seen 16-252 s after injection. The duration of enhancement was 13-208 s (mean, 80 s). All transitional cell carcinomas showed peripheral enhancement. Enhancement was seen 22-270 s after injection. The duration of enhancement was 191-238 s (mean, 291 s). Five patients with acute pyelonephritis and 2 with renal trauma showed focal perfusion defects not shown on the pre-contrast examinations.<bold>Conclusion: </bold>CHA US with microbubble contrast agent is an effective US technique for the evaluation of both tumor vascularity and renal perfusion abnormality.
- Subjects
KIDNEY diseases; KIDNEY tumors; PERFUSION; RENAL cell carcinoma; ULTRASONIC imaging; CONTRAST media; TRANSITIONAL cell carcinoma
- Publication
Acta Radiologica, 2003, Vol 44, Issue 2, p166
- ISSN
0284-1851
- Publication type
journal article
- DOI
10.1034/j.1600-0455.2003.00025.x