title: Reducing radiation dose in CT enterography.
abstract: 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.
authors.affiliation: Department of Radiology, Mayo Clinic, 13400 E Shea Blvd, Scottsdale, AZ 85259, USA.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Del Gaizo
authors.forename: Joel G
authors.initials: JG
authors.lastname: Fletcher
authors.forename: Lifeng
authors.initials: L
authors.lastname: Yu
authors.forename: Robert G
authors.initials: RG
authors.lastname: Paden
authors.forename: Garrett Clay
authors.initials: GC
authors.lastname: Spencer
authors.forename: Shuai
authors.initials: S
authors.lastname: Leng
authors.forename: Annelise M
authors.initials: AM
authors.lastname: Silva
authors.forename: Jeff L
authors.initials: JL
authors.lastname: Fidler
authors.forename: Alvin C
authors.initials: AC
authors.lastname: Silva
authors.forename: Amy K
authors.initials: AK
authors.lastname: Hara
mesh_terms: D006801:Humans; D007410:Intestinal Diseases / Q000000981:diagnostic imaging*; D007421:Intestine, Small / Q000000981:diagnostic imaging*; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*