Related Experiment Video
Updated: May 17, 2026
10:28
Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
Dynamic changes of FDG uptake and clearance in normal tissues
Gang Cheng1, Abass Alavi, Esther Lim
1Department of Radiology, Philadelphia VA Medical Center, 3900 Woodland Avenue, Philadelphia, PA, 19104, USA. gangcheng99@yahoo.com
Molecular Imaging and Biology
|October 24, 2012
Summary
Dynamic 2-deoxy-2-[(18)F]fluoro-D-glucose (FDG) uptake varies in normal tissues over time. Understanding these changes in FDG PET imaging is crucial for accurate interpretation of lesions.
Area of Science:
- Nuclear Medicine
- Radiochemistry
- Medical Imaging
Background:
- Positron Emission Tomography (PET) with 2-deoxy-2-[(18)F]fluoro-D-glucose (FDG) is vital for disease detection.
- Understanding normal tissue FDG uptake dynamics is essential for accurate interpretation.
- Temporal changes in FDG uptake can influence diagnostic accuracy.
Purpose of the Study:
- To evaluate the dynamic changes in FDG uptake within various normal tissues.
- To characterize the time-dependent behavior of FDG accumulation in healthy organs.
- To provide reference data for interpreting delayed FDG PET scans.
Main Methods:
- Thirty male patients underwent FDG PET/CT imaging at 1, 2, and 3 hours post-injection.
- Standardized Uptake Values (SUV) were measured in regions of interest for normal tissues.
- Dynamic uptake patterns were analyzed across different time points.
Main Results:
- Aorta, liver, and spleen showed continuous FDG decrease.
- Lungs, pancreas, lymph nodes, and skeletal muscle showed FDG decrease from 1-2 hours.
- Myocardium exhibited differential uptake patterns; bone showed increased uptake on delayed imaging.
Conclusions:
- FDG uptake dynamics in normal tissues vary significantly over time.
- Knowledge of these temporal changes aids in comparing scans and interpreting lesions.
- Findings support the use of delayed FDG PET imaging and internal reference regions.
