Cardiac Perfusion and Metabolism With [11C] Acetate PET/CT is Associated With Hematopoietic System Activation in Acute Decompensated Heart Failure: An Imaging Sub-study

Inclusion Criteria: * At least 18 years of age. * Enrollment in the UAB CMC-ADHF study under the separate UAB approved research protocol (IRB-300000114, PI Rajapreyar) * Negative urine or serum β-hCG test within 48 hours of \[11C\] acetate administration in women of child bearing potential. Women who are post-menopausal with at least 1 year since last menses or documented surgical sterilization will not require pregnancy testing. Exclusion Criteria: * Inability to provide informed consent * Pregnancy * Inability to lie still for the imaging study * Weight exceeding the weight limit of the PET imaging table (500 pounds).