A 64-slice computed tomography coronary angiography (CTCA) is a type of high-tech scan that is used to evaluate heart disease, but there are little data on its associated cancer risk from the radiation exposure.
A group of researchers conducted a study to estimate the lifetime attributable risk (LAR) of cancer associated with standard radiation exposure from a single heart scan using 64-slice CT coronary angiography. They found that the risk varied widely and were the highest with women in their 20s compared with other adults and concluded that CTCA should be used cautiously, especially in young women, using the lowest effective dose of radiation.
The study "Estimating Risk of Cancer Associated With Radiation Exposure From 64-Slice Computed Tomography Coronary Angiography" is published in JAMA. 2007;298(3):317-323 .
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