The Future of Cardiac Molecular Imaging.

Molecular imaging with positron emission tomography (PET) and single-photon emission computed tomography (SPECT) serves numerous applications in clinical cardiology and research. Similar to other medical imaging technologies, this area has undergone and continues to experience rapid changes resulting from technological and medical advances. These have immediate impacts on diagnosis, treatment planning, and patient care, as well as supplying innovative tools for fundamental and translational research. A broad shift toward hybrid PET systems and incorporation of advanced computational tools has been accompanied by mechanism-specific, targeted radiopharmaceuticals that seek to address long-standing limitations in cardiac imaging. While this review addresses some of the still-emerging clinical uses of established radiopharmaceuticals, it too highlights newer imaging probes, applications, and imaging techniques and instrumentation on the horizon. We highlight molecular imaging advances in inflammatory and infiltrative myocardial conditions, heart metabolism, vascular and valvular diseases, neurohormonal dysregulation, and transformational technical advances such as the rise of artificial intelligence and theranostic approaches to cardiovascular disease.

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