Abstract
Cardiologists are among the heaviest medical users of ionising radiation. This usage is growing in proportion to the expanding range of cardiac diagnostic tests and interventional treatments. The primary focus of cardiologists is achieving clear diagnoses as well as technically and clinically successful treatments. That has to be set alongside strong awareness of the properties of ionising radiation and associated safety issues. This article illustrates some of the interplay between contemporary cardiology, radiological techniques, cardiology training and ionising radiation regulations and aims to set context for training and accreditation of cardiologists who use ionising radiation.