What Does It Mean and How Do We Measure It?
نویسنده
چکیده
T he paper by Bonow et al' in this issue of Circulation reports important empirical observations on measuring myocardial viability in humans with the potassium analogue thallium-201. After obtaining standard 20'1f exercise and redistribution images, a second dose of 201TI was injected and a third (reinjection) image was obtained beginning 10-15 minutes later. The reinjection images identified viable and necrotic myocardium with the same accuracy as perfusion/metabolic imaging by positron emission tomography (PET) using cyclotron-produced [18F]fluorodeoxyglucose (FDG) and water labeled with oxygen 15. The observations in their paper' have implications about how we measure myocardial viability, what we
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