Low-glucose/High-fat Intake Dietary Regimen as a Tool for Empowering Diagnostic Accuracy of 2-[18F]FDG PET/CT in Lepidic-predominant Growth Lung Adenocarcinoma
About This Trial
This study evaluates whether a 7-day ketogenic dietary regimen before 2-\[18F\]FDG PET/CT can improve the diagnostic accuracy of imaging in adults with suspected or histologically confirmed lepidic-predominant lung adenocarcinoma (LPA). LPA frequently shows low glucose metabolism and may yield false-negative FDG PET/CT results. Approximately 30 participants will undergo a tailored ketogenic diet for 7 days before PET/CT. Imaging results will be compared with histopathology and additionally assessed against literature-reported diagnostic performance and a matched retrospective institutional cohort.
Who May Be Eligible (Plain English)
Original Eligibility Criteria
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Treatments Being Tested
Ketogenic diet
Tailored low-glucose/high-fat ketogenic dietary regimen administered for 7 consecutive days before 2-\[18F\]FDG PET/CT. Compliance will be assessed by clinical review, laboratory testing, and urinalysis on the day of PET/CT.
2-[18F]FDG PET/CT
FDG PET/CT performed after completion of the 7-day ketogenic diet. Images will undergo visual and semiquantitative assessment, including comparison of target nodule uptake with mediastinal blood pool background and measurement of SUVmax.