Date: 14 Feb 2013

Multiple opportunities to reduce radiation dose from myocardial perfusion imaging

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Exposure of patients and practitioners to radiation from myocardial perfusion imaging (MPI) has grown markedly over the past three decades. Worldwide, 15–20 million MPI procedures are now performed annually. This growth is in part a reflection of the dissemination of a clinically useful technology, as MPI enables the evaluation and characterization of coronary and myocardial disease in a host of diagnostic scenarios. This, however, has led to a situation where in some practice settings, MPI is the single largest contributor to medical radiation burden [1], and published estimates suggest that this burden may be the cause of thousands of cancers each year [2]. The appropriate response from practitioners is to redouble our efforts to implement the fundamental principles of radiological protection: justification and optimization [3]. Justification, in practice, entails making sure each and every MPI examination performed is the right test for the right patient at the right time. Optimizat ...