18F-Fluorodeoxyglucose Imaging for Assessing Cardiovascular Inflammation

Figures

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  Figure 1. Differences in myocardial energy metabolism under postprandial and fasting conditions (top) and FDG uptake for a PET study (bottom). Glucose is a major energy source in the myocardium under high plasma glucose and insulin with low free fatty acid conditions. On the other hand, fatty acid is a major energy source under low plasma glucose and insulin with high free fatty acid conditions.

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  Figure 2. FDG uptake in the normal subject (left) and abnormal FDG uptake in active inflammatory lesions in patients with giant cell arteritis, cardiac sarcoidosis, and arteriosclerosis (right).

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  Figure 3. FDG PET MIP images (top) and transaxial images (bottom) of a patient with sarcoidosis before (left) and after steroid (prednisolone) therapy (middle) and in recurrent stage (right). Note significant reduction in FDG uptake in the myocardium and lymph nodes post-therapy with increased uptake in the myocardium with recurrence.

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  Figure 4. Contrast-enhanced CT (CECT) (left), radiation therapy planning (middle), and FDG PET/CT (right) after radiation therapy in a patient with esophageal cancer. High FDG uptake in the left atrium is noted, suggesting acute myocarditis after radiation therapy.