Reducing radiation dose in CT enterography

Andrew J. Del Gaizo, Joel G. Fletcher, Lifeng Yu, Robert G. Paden, Garrett Clay Spencer, Shuai Leng, Annelise M. Silva, Jeff L. Fidler, Alvin C. Silva, Amy K. Hara

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


Computed tomographic (CT) enterography is a diagnostic examination that is increasingly being used to evaluate disorders of the small bowel. An undesirable consequence of CT, however, is patient exposure to ionizing radiation. This is of particular concern with CT enterography because patients tend to be young and require numerous follow-up examinations. There are multiple strategies to reduce radiation dose at CT enterography, including adjusting acquisition parameters, reducing scan length, and reducing tube voltage or tube current. The drawback to dose reduction strategies is degradation of image quality due to increased image noise. However, image noise can be reduced with commercial iterative reconstruction and denoising techniques. With a combination of low-dose techniques and noise-control strategies, one can markedly reduce radiation dose at CT enterography while maintaining diagnostic accuracy.

Original languageEnglish (US)
Pages (from-to)1109-1124
Number of pages16
Issue number4
StatePublished - Jul 2013

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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