Abstract
The aim of the study was to evaluate the visceral localization of the three most commonly used choline-based radiotracers (C-choline, F-methylcholine, and F-ethylcholine) with the aim of analyzing uptake in metabolically and anatomically disease-free patients. A total of 1250 standardized uptake values (SUVmax, SUVmean) were analyzed in 45 anatomical regions in 45 patients (15 patients with C-choline, 15 with F-methylcholine, and 15 with F-ethylcholine). These patients were selected from a cohort of 3721 choline PET/computed tomography studies performed at three teaching hospitals over a period of 10 years. They had no evidence of metabolically active primary disease, metastatic disease, or altered morphology on the computed tomography component of the study or any evidence of disease elsewhere on other imaging modalities. The sites of primary disease (prostate and seminal vesicles) were excluded from evaluation. No adverse effect was documented when using the three tracers. Visceral localization was the same for all three tracers. Viscera with a statistical difference in intensity of uptake included the choroid plexus (P=0.0001), occipital lobe (P=0.014), parietal lobe (P=0.008), cerebellum (P=0.003), parotid gland (P=0.005), ...Continue Reading
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