Trial Information

Retrospective Study on the Incidence and Factors of Brown Adipose Tissue in Adult Chinese

We will study scanning database including data from July 2006 to June 2010 in Shanghai. BAT
activity will be measured via 18F-fluorodeoxyglucose (FDG) positron emission
tomography/computed tomography (PET/CT). Age, imaging date, sex, and outdoor temperature
will be collected for all patients. To evaluate the effects of multiple metabolic parameters
on BAT activity, we will collect height, body weight, fasting plasma glucose (FPG), medical
history, diagnosis, smoking, alcohol consumption, exercise, liver triglyceride content, and
thyroid metabolic activity for all patients with detectable BAT and their negative controls,
consisting of two patients who underwent PET/CT scans at the same day but without detectable
BAT.