Renal cyst pseudoenhancement at 16- and 64-dector row MDCT

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• 作者：Victor Sai ; Rebecca Rakow-Penner ; Benjamin M. Yeh ; Fergus V. Coakley ; Antonio C. Westphalen ; Emma M. Webb ; Zhen J. Wang ; ^{jane.wang@ucsf.edu}
• 关键词：Renal cyst ; CT ; Pseudoenhancement
• 刊名：Clinical Imaging
• 出版年：2013
• 出版时间：May-June, 2013
• 年：2013
• 卷：37
• 期：3
• 页码：520-525
• 全文大小：339 K

文摘

Objective

To evaluate the presence of renal cyst pseudoenhancement at 16- and 64-row multidetector computed tomography (MDCT) in patients.

Methods

MDCT images from 90 patients with renal cysts > 1 cm in diameter (n= 122) were retrospectively analyzed for the presence and predictors of cyst pseudoenhancement.

Results

Fifty-three percent of cysts 1-2 cm demonstrated pseudoenhancement (ranged from 11 to 35 HU). Cyst pseudoenhancement was more pronounced when imaged with 64-row CTs compared to 16-row CT. Cyst size, postcontrast renal parenchymal density, and number of scanner detector rows were independent predictors of pseudoenhancement.

Conclusion

Pseudoenhancement occurs most frequently in patients with renal cysts < 2 cm imaged with 64-detector-row MDCT.