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Estimating Risk of Cancer Associated With Radiation Exposure From 64-Slice Computed Tomography Coronary Angiography
Abstract
CONTEXT: Computed tomography coronary angiography (CTCA) has become a common diagnostic test, yet there are little data on its associated cancer risk. The recent Biological Effects of Ionizing Radiation (BEIR) VII Phase 2 report provides a framework for estimating lifetime attributable risk (LAR) of cancer incidence associated with radiation exposure from a CTCA study, using the most current data available on health effects of radiation. OBJECTIVES: To determine the LAR of cancer incidence associated with radiation exposure from a 64-slice CTCA study and to evaluate the influence of age, sex, and scan protocol on cancer risk. DESIGN, SETTING, AND PATIENTS: Organ doses from 64-slice CTCA to standardized phantom (computational model) male and female patients were estimated using Monte Carlo simulation methods, using standard spiral CT protocols. Age- and sex-specific LARs of individual cancers were estimated using the approach of BEIR VII and summed to obtain whole-body LARs. MAIN OUTCOME MEASURES: Whole-body and organ LARs of cancer incidence. RESULTS: Organ doses ranged from 42 to 91 mSv for the lungs and 50 to 80 mSv for the female breast. Lifetime cancer risk estimates for standard cardiac scans varied from 1 in 143 for a 20-year-old woman to 1 in 3261 for an 80-year-old man. Use of simulated electrocardiographically controlled tube current modulation (ECTCM) decreased these risk estimates to 1 in 219 and 1 in 5017, respectively. Estimated cancer risks using ECTCM for a 60-year-old woman and a 60-year-old man were 1 in 715 and 1 in 1911, respectively. A combined scan of the heart and aorta had higher LARs, up to 1 in 114 for a 20-year-old woman. The highest organ LARs were for lung cancer and, in younger women, breast cancer. CONCLUSIONS: These estimates derived from our simulation models suggest that use of 64-slice CTCA is associated with a nonnegligible LAR of cancer. This risk varies markedly and is considerably greater for women, younger patients, and for combined cardiac and aortic scans.
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Cited by
2014 ESC Guidelines on the diagnosis and management of acute pulmonary embolism
Authors/Task Force Members, Konstantinides, S. V., Torbicki, A., Agnelli, G., Danchin, N., Fitzmaurice, D., Galiè, N., Gibbs, J. S. R., Huisman, M. V., Humbert, M., et al. (2014) · European Heart Journal · doi:10.1093/eurheartj/ehu283 · Cited by 3,128
Cancer risks from diagnostic radiology
HALL, E. J., & BRENNER, D. J. (2008) · The British Journal of Radiology · doi:10.1259/bjr/01948454 · Cited by 915
Fihn, S. D., Gardin, J. M., Abrams, J., Berra, K., Blankenship, J. C., Dallas, A. P., Douglas, P. S., Foody, J. M., Gerber, T. C., Hinderliter, A. L., et al. (2012) · Circulation · doi:10.1161/cir.0b013e318277d6a0 · Cited by 845
Abbara, S., Arbab-Zadeh, A., Callister, T. Q., Desai, M. Y., Mamuya, W., Thomson, L., & Weigold, W. G. (2009) · Journal of Cardiovascular Computed Tomography · doi:10.1016/j.jcct.2009.03.004 · Cited by 580
Abdulla, J., Abildstrom, S. Z., Gotzsche, O., Christensen, E., Kober, L., & Torp-Pedersen, C. (2007) · European Heart Journal · doi:10.1093/eurheartj/ehm466 · Cited by 357
Metadata
- Authors
- Einstein, A. J., Henzlova, M. J., & Rajagopalan, S.
- Venue
- JAMA
- Publisher
- American Medical Association (AMA)
- Published
- 2007-07-18
- Volume
- 298
- Issue
- 3
- Pages
- 317
- ISSN
- 0002-9955 (ISSN-L)
- 0098-7484
- OpenAlex
- W2095728038
- Cited by
- 1,410
- References
- 0
- FWCI
- 116.97
- Type
- journal article
- Language
- en
- Open access
- closed
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