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Temporal muscle uptake causing an unusual focal artifact on three-dimensional stereotactic surface projections statistical maps of (18F) fluorodeoxyglucose brain positron emission tomography in a patient with Alzheimer's disease


1 Department of Radiology, Division of Nuclear Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
2 Department of Radiology and Imaging Sciences, University of Utah, Salt Lake City, Utah, USA

Correspondence Address:
Tanyaluck Thientunyakit,
Department of Radiology, Division of Nuclear Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700
Thailand
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/wjnm.WJNM_97_18

(18F) fluorodeoxyglucose brain positron emission tomography and statistical mapping analysis, such as three-dimensional stereotactic surface projections, have been used widely for the evaluation of dementia patients. We present an unusual focal artifact on the statistical maps resulting from intense temporal muscle uptake in a patient with Alzheimer's disease. Various degrees of physiologic uptake can be seen in head and neck muscles. However, it is unusual to see a focal artifact on the statistical maps due to temporal muscle uptake. This case illustrates the importance of quality control of imaging processing when atypical findings are seen on statistical maps.


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