Concurrent Low Brain and High Liver Uptake on FDG PET Are Associated with Cardiovascular Risk Factors.
10.3348/kjr.2017.18.2.392
- Author:
Hyun Yeol NAM
1
;
Sungmin JUN
;
Kyoungjune PAK
;
In Joo KIM
Author Information
1. Department of Nuclear Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon 51353, Korea.
- Publication Type:Original Article
- Keywords:
Brain;
Liver;
FDG;
PET;
Cardiovascular risk factor
- MeSH:
Alanine Transaminase;
Blood Glucose;
Blood Pressure;
Body Mass Index;
Brain*;
Fasting;
Frontal Lobe;
Hemoglobin A, Glycosylated;
Homeostasis;
Humans;
Insulin;
Insulin Resistance;
Liver*;
Male;
Odds Ratio;
Positron-Emission Tomography;
Positron-Emission Tomography and Computed Tomography;
Retrospective Studies;
Risk Factors*;
Triglycerides;
Waist Circumference
- From:Korean Journal of Radiology
2017;18(2):392-401
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: Concurrent low brain and high liver uptake are sometimes observed on fluorine-18-labeled fluoro-2-deoxy-D-glucose (FDG) positron emission tomography (PET). We investigated the potential clinical significance of this uptake pattern related to metabolic syndrome (MS). MATERIALS AND METHODS: We retrospectively reviewed data from 264 consecutive males who had undergone general health check-ups, including FDG PET/CT scans. After an overnight fast, the men had their peripheral blood drawn and the levels of various laboratory parameters measured; an FDG PET/CT scan was performed on the same day. We measured the maximum standardized uptake values of the brain and liver from regions of interest manually placed over the frontal cortex at the level of the centrum semiovale and the right lobe of the liver parenchyma, respectively. RESULTS: Fasting blood glucose (FBG; odds ratio [OR] = 1.063, p < 0.001) and glycated hemoglobin (HbA1c; OR = 3.634, p = 0.010) were the strongest predictive factors for low brain FDG uptake, whereas waist circumference (OR = 1.200, p < 0.001) and γ-glutamyl transpeptidase (OR = 1.012, p = 0.001) were the strongest predictive factors for high liver uptake. Eleven subjects (4.2%) showed concurrent low brain and high liver FDG uptake, and all but one of these subjects (90.9%) had MS. Systolic blood pressure, waist circumference, FBG, triglyceride, alanine aminotransferase, insulin resistance (measured by homeostasis model assessment), insulin, HbA1c, and body mass index were higher in subjects with this FDG uptake pattern than in those without (all, p < 0.001). CONCLUSION: Concurrent low brain and high liver FDG uptake were closely associated with MS. Moreover, subjects with this pattern had higher values for various cardiovascular risk factors than did those without.
