Radiation risk from coronary artery disease imaging: how do different diagnostic tests compare?

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Abstract
Since selection of the optimal diagnostic test for a particular patient requires an assessment of the benefits and risks to the patient of each test under consideration, as well as the benefits and risks of not performing any testing, an understanding of the risks from ionising radiation can play an important role in patient management. In this editorial, I examine how radiation risk is quantified and how such estimates differ between different cardiac diagnostic tests.