Clinical nuclear medicine
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Clinical nuclear medicine · Jan 2015
Case ReportsPulmonary artery angiosarcoma on 18F-FDG PET/CT masquerading as pulmonary embolism.
A 53-year old woman suspicious for having pulmonary embolism on enhanced chest CT was proven to have metabolically active tumor in her pulmonary arteries on F-FDG PET/CT. Through biopsy and surgery, this turned out to be a pulmonary artery angiosarcoma. This case demonstrates that PET/CT is very useful in differentiating an aggressive malignant tumor from a bland pulmonary embolus in the pulmonary vasculature.
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Clinical nuclear medicine · Jan 2015
Standing prone positioning in establishing causality between matched ventilation-perfusion defects and pleural effusion.
Ventilation-perfusion scintigraphy is routinely performed in patients with suspected pulmonary thromboembolism. Pleural effusions in such patients are common and can cause matched ventilation-perfusion defects. ⋯ Prone positioning has been described as a useful technique to redistribute pleural fluid anteriorly, exposing perfusion in posterior lung fields; however, some patients have a concurrent condition that renders prone positioning difficult. This report discusses a modified technique that allows patients to be imaged in a standing prone position with excellent results.