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Review
. 2004 Apr;19(2):159-66.
doi: 10.3346/jkms.2004.19.2.159.

Radiation exposure from chest CT: issues and strategies

Mannudeep K Kalra  1 , Michael M Maher, Stefania Rizzo, David Kanarek, Jo-Anne O Shepard
Affiliations
Review

Radiation exposure from chest CT: issues and strategies

Mannudeep K Kalra et al. J Korean Med Sci. 2004 Apr.

Erratum in

  • J Korean Med Sci. 2004 Jun;19(3):487. Shephard JA [corrected to Shepard JA]

Abstract

Concerns have been raised over alleged overuse of CT scanning and inappropriate selection of scanning methods, all of which expose patients to unnecessary radiation. Thus, it is important to identify clinical situations in which techniques with lower radiation dose such as plain radiography or no radiation such as MRI and occasionally ultrasonography can be chosen over CT scanning. This article proposes the arguments for radiation dose reduction in CT scanning of the chest and discusses recommended practices and studies that address means of reducing radiation exposure associated with CT scanning of the chest.

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Figures

Fig. 1
Fig. 1
Low radiation dose images can also give diagnostic quality images. Transverse CT images reveal multiple metastatic nodules in a 64-yr-old man with colon cancer who underwent a standard radiation dose CT (224 mAs) (A) and follow-up CT with 50% reduction in radiation dose (112 mAs) (B).
Fig. 2
Fig. 2
Technology can aid in radiation dose reduction. Transverse CT image (224 mAs) (A) of a 44-yr-old man with chronic cough acquired with conventional scanning technique is similar to CT image (112 mAs) (B) acquired with automatic tube current modulation technique (at 50% reduction in radiation dose) in terms of diagnostic quality.
See this image and copyright information in PMC

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