Published in:
01-02-2012 | Cardiac PET, CT, and MRI (S Achenbach, Section Editor)
Low-Dose Cardiovascular Computed Tomography: Where are the Limits?
Authors:
Paul Schoenhagen, Carla M. Thompson, Sandra S. Halliburton
Published in:
Current Cardiology Reports
|
Issue 1/2012
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Abstract
Since its introduction in the 1970s, diagnostic computed tomography (CT) imaging has grown rapidly and developed into a standard diagnostic test for a wide variety of cardiovascular conditions. Although this has undoubtedly led to improved medical care, it has also been associated with a significant increase in population-based radiation exposure and the potential downstream increase in cancer is a justified concern. For cardiovascular CT, new CT scanner technologies were initially directed toward maximizing image quality rather than minimizing radiation exposure. Only more recently have technologic advances yielded dose-saving protocols for cardiovascular applications, with impressive reduction of radiation exposure. The achievable limits of population-based exposure are dependent on responsible, evidence-based use of CT for cardiovascular imaging as well as exploitation of available and emerging dose-saving strategies.