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KMID : 0880420140150040530
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Korean Journal of Radiology
2014 Volume.15 No. 4 p.530 ~ p.533
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Hot-Clot Artifacts in the Lung Parenchyma on F-18 Fluorodeoxyglucose Positron Emission Tomography/CT due to Faulty Injection Techniques: Two Case Reports
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Ozdemir Elif
Poyraz Nilufer Yildirim
Keskin Mutlay
Kandemir Zuhal
Turkolmez Seyda
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Abstract
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F-18-fluorodeoxyglucose (FDG) positron emission tomography/CT is an important whole-body imaging tool in the oncology and widely utilized to stage and restage various malignancies. The findings of significant focal accumulation of FDG in the lung parenchyma in the absence of corresponding CT abnormalities are related to the lung microembolism and known as hot-clot artifacts. Herein we present two cases with focal FDG uptake in the lung parenchyma with no structural lesions on the CT scan and discuss the possible mechanisms.
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KEYWORD
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FDG PET/CT, Microembolism, False positive
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