Journal
JACC-CARDIOVASCULAR IMAGING
Volume 3, Issue 5, Pages 517-524Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jcmg.2009.11.017
Keywords
radiation; imaging; risk
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Clinical decision-making regarding the use of low-level ionizing radiation for diagnostic and/or therapeutic purposes in patients with cardiovascular disease must, as in all other clinical scenarios, encompass the broad range of the risk-benefit ratio. Concerns regarding the late carcinogenic effects of exposure to low levels, i.e., <100 mSv, of ionizing radiation stem from extrapolation of exposure-outcome data in survivors of World War II atomic bomb explosions. However, ongoing debate regarding the true incremental risk to subjects exposed to doses currently administered in cardiovascular procedures fails to take into account the uncertainty of the dose-response relationship in this lower range, as well as tissue-specific reparative responses, also manifest at lower levels of exposure. The present discussion draws attention to both of these aspects as they relate to clinical decision-making. (J Am Coll Cardiol Img 2010;3:517-24) (C) 2010 by the American College of Cardiology Foundation
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