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Related Experiment Video

Updated: Mar 2, 2026

Determining Glucose Metabolism Kinetics Using 18F-FDG Micro-PET/CT
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Determining Glucose Metabolism Kinetics Using 18F-FDG Micro-PET/CT.

Blake J Cochran1, William J Ryder2, Arvind Parmar3

  • 1School of Medical Sciences, Faculty of Medicine, UNSW Australia; b.cochran@unsw.edu.au.

Journal of Visualized Experiments : Jove
|May 19, 2017
PubMed
Summary

This study introduces a novel imaging method using 18F-FDG and micro-PET/CT to measure in vivo glucose metabolism kinetics. This technique accurately assesses glucose uptake and metabolism, crucial for understanding type 2 diabetes and evaluating treatments.

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Area of Science:

  • Nuclear Medicine
  • Biomedical Imaging
  • Metabolic Research

Background:

  • Insulin resistance and impaired glucose metabolism are key features of type 2 diabetes.
  • Accurate measurement of in vivo glucose metabolism kinetics is vital for diabetes research.
  • Current methods often require invasive arterial blood sampling.

Purpose of the Study:

  • To present a non-invasive imaging technique for quantifying in vivo glucose metabolism kinetics using 18F-FDG and micro-PET/CT.
  • To establish a method for extracting an image-derived input function, eliminating the need for arterial blood samples.
  • To enable detailed kinetic analysis of glucose uptake and metabolism in preclinical models.

Main Methods:

  • Utilized 18F-FDG (fluorodeoxyglucose) and micro-PET/CT imaging in mice.
  • Developed an iterative deconvolution method to derive the input function from the vena cava.
  • Applied a two-tissue, three-compartment model to fit time-activity curves from tissue and vena cava data.

Main Results:

  • Successfully determined in vivo glucose metabolism kinetics without arterial blood sampling.
  • Estimated key kinetic micro-parameters including plasma-to-intracellular uptake, intracellular-to-plasma transport, and phosphorylation rates.
  • Demonstrated the transferability of the method to rats.

Conclusions:

  • The described 18F-FDG micro-PET/CT methodology provides a robust, non-invasive approach to assess glucose metabolism kinetics.
  • This technique facilitates longitudinal studies and offers insights into therapeutic interventions for metabolic diseases.
  • The image-derived input function significantly simplifies the experimental procedure.