A precise oral glucose loading 18F-FDG PET myocardial metabolic imaging protocol in coronary artery disease patients complicated by diabetes mellitus: an exploratory prospective cohort study - Summary - MDSpire

A precise oral glucose loading 18F-FDG PET myocardial metabolic imaging protocol in coronary artery disease patients complicated by diabetes mellitus: an exploratory prospective cohort study

  • By

  • Liang Yin

  • Yangyang Lin

  • Jianlan Yue

  • Zhichun Lin

  • Hongtao Sun

  • July 10, 2026

  • 0 min

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Objective:

To evaluate the feasibility of a precise oral glucose loading combined with subcutaneous insulin administration protocol for 18F-FDG PET myocardial metabolic imaging in CAD patients with diabetes mellitus.

Approach:
  • Method: Study Population
  • Method: Imaging Protocol
  • Method: Image Quality Assessment
Key Findings:
  • FDG image quality was excellent in 57.5% of patients, with variations based on blood glucose levels.
  • Patients with blood glucose >7.77 mmol/L had significantly lower odds of excellent image quality.
  • 26.3% of patients exhibited completely viable myocardium, while 49.7% had partially viable myocardium.
Interpretation:

The tailored oral glucose loading protocol is feasible for clinical application in this patient population.

Limitations:
  • The study was conducted at a single center, which may limit generalizability.
  • The sample size may not be sufficient to draw broader conclusions.
Conclusion:

The precise oral glucose loading protocol prior to 18F-FDG injection is feasible for clinical application.

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