Brown fat uptake of 18F-FDG on dual time point PET/CT imaging
Singapore medical journal
;
: e37-9, 2010.
Article
in English
| WPRIM
| ID: wpr-272969
ABSTRACT
The aim of this report was to assess the changes in the 18F-fluorodeoxyglucose (18F-FDG) uptake of brown fats on integrated positron emission tomography/computed tomography (PET/CT) imaging. The patient presented with an enlargement of the neck lymph nodes, and was suspicious for tuberculous lymphadenitis. A whole body PET/CT imaging was performed, followed by a delayed imaging of the neck and thoracic regions. A visually increased 18F-FDG uptake was taken as a positive finding. A semi-quantitative evaluation was performed using a maximum standardised uptake value (SUVmax), with a cut-off value above 2.5. There were a number of 18F-FDG avid activity areas seen at the supraclavicular, mediastinal, paravertebral and perirenal regions. These are in keeping with the physiological 18F-FDG uptake in brown fat. The differences in SUVmax between the two images ranged from -20 percent to +20 percent. Based on our observations, dual time point imaging may not be a reliable method for assessing the 18F-FDG uptake of brown fat.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tuberculosis, Lymph Node
/
Adipose Tissue, Brown
/
Diagnostic Imaging
/
Fluorodeoxyglucose F18
/
Positron-Emission Tomography
/
Metabolism
/
Methods
Type of study:
Diagnostic study
Limits:
Adult
/
Female
/
Humans
Language:
English
Journal:
Singapore medical journal
Year:
2010
Type:
Article
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