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

Victor Sai, Rebecca Rakow-Penner, Benjamin M. Yeh, Fergus V. Coakley, Antonio C. Westphalen, Emma M. Webb, Zhen J. Wang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)520-525
Number of pages6
JournalClinical Imaging
Issue number3
StatePublished - May 2013
Externally publishedYes


  • CT
  • Pseudoenhancement
  • Renal cyst

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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