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18F-Choline Uptake in Acute Ischemic Stroke
Abstract: A 75-year-old man with a history of prostate cancer was referred to our department to perform 18F-choline (FCH) PET/CT. FCH PET/CT showed a markedly increased uptake in the right temporoparietal junction brain. Three weeks earlier, acute ischemic stroke was diagnosed in the right temporoparietal junction brain on diffusion-weighted sequence and thrombosis in a distal branch of the right middle cerebral artery on MR angiography. Choline precursors promote repair and growth of cell membranes in neurologic diseases, so FCH PET/CT uptake could be explained by repair processes during early outcome of acute ischemic stroke.
Source: Clinical Nuclear Medicine - January 10, 2017 Category: Nuclear Medicine Tags: Interesting Images Source Type: research

Subacute Stroke Mimicking Cerebral Metastasis in 68Ga-PSMA-HBED-CC PET/CT
Abstract: A 65-year-old man with disseminated bone metastases of prostate cancer was referred for 68Ga-PSMA-HBED-CC-PET/CT (short PSMA-PET/CT) to exclude visceral metastases before treatment of bone metastases with 223Ra-dichloride. Apart from disseminated bone metastases, PSMA-PET/CT revealed a focal cerebral tracer uptake in the right frontal lobe highly suspicious for cerebral spread. According to patient history, a cerebral infarction occurred 14 days before PSMA imaging in corresponding localization confirmed by MRI scanning. This case demonstrates the possibility of false-positive finding of cerebral metastases in PS...
Source: Clinical Nuclear Medicine - September 8, 2016 Category: Nuclear Medicine Tags: Interesting Images Source Type: research