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- W4246425823 abstract "Acetate has a pivotal role in the intermediary metabolism of living cells. Glucose, fatty acids and other carbon sources for oxidation are converted to acetate before entering the mitochondrial tricarboxylic acid cycle. 11C-acetate PET is an established technique in cardiac imaging since decades and allows accurate estimates of both regional myocardial blood flow (MBF) and oxygen consumption (MVO2) to be obtained simultaneously from a single scan of less than 30 min duration. Image acquisition is based on dynamic imaging and analysis requires kinetic modeling approaches for optimal results. These requirements, as well as the need for an on-site cyclotron for carbon-11 production, so far limited the clinical use to advanced PET facilities. In recent years, myocardial 11C-acetate PET has seen a renewed interest in heart failure research into myocardial external efficiency (MEE). MEE is defined as the ratio of the energy associated with external pressure-volume work (cardiac output x systemic blood pressure, converted to Joule) and chemical energy consumed (MVO2 x left ventricular mass (LVM), converted to Joule). Cardiac output and LVM can be measured by echocardiography, magnetic resonance imaging or directly from the 11C-acetate PET scan, and hence provides a fully non-invasive approach to detailing important aspects of the inner workings of the heart. MEE is increasingly used to evaluate new therapies in heart failure and has been validated for that purpose. MEE has a high reproducibility and might potentially also be of use for early diagnosis of heart failure before symptoms develop.This chapter describes scanning parameters with image analysis and summarizes the clinical utility of MBF, MVO2 and MEE measurements obtained from 11C-acetate PET." @default.
- W4246425823 created "2022-05-12" @default.
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- W4246425823 date "2019-06-01" @default.
- W4246425823 modified "2023-09-30" @default.
- W4246425823 title "Malignified IPMN and PDAC have comparable overall survival: A western single center cohort study" @default.
- W4246425823 doi "https://doi.org/10.1016/j.pan.2019.05.306" @default.
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