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13.8 Heart failure
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Published:July 2018
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This version:August 2021
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Abstract
Heart failure (HF) has turned into an increasing global socioeconomic issue associated with high morbidity and mortality. Cardiac radionuclide imaging offers important clinical information for risk stratification and tailored treatment strategies in patients with HF. Ischaemic cardiomyopathy is the most common cause of HF. Left and right ventricular function can be assessed and quantified with radionuclide ventriculography (RNV) or gated scintigraphic studies. Additionally, radionuclide imaging may help to assess functional and metabolic integrity of dysfunctional myocardium. Chronic myocardial ischaemia can lead to variable reversible states of contractile impairment termed myocardial stunning or hibernation. Radionuclide techniques including positron emission tomography with 18F-fluorodeoxyglucose or myocardial perfusion scintigraphy can identify viable myocardium with the potential for functional recovery, and thereby guide revascularization procedures. Increased sympathetic myocardial innervation assessed by 131I-metaiodobenzylguanidine (MIBG) single-photon emission tomography (SPECT) is associated with poorer HF outcomes and higher rates of sudden cardiac death or arrhythmia. Finally, left ventricular mechanical dyssynchrony can be evaluated using Fourier-transformed phase analysis of RNV or gated myocardial perfusion SPECT. This approach could potentially be useful to guide targeted resynchronization therapy in the future.
Update:
Myocardial viability and hibernation section updated.
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