Comparison of the Short-Term Effect of Dietary Carbohydrate Restriction Versus Exogenous Ketone Supplementation on Myocardial Glucose Suppression and Timing to Achieve a State of Ketosis Using FDG PET/CT Serial Imaging

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  • participants needed
  • sponsor
    University of Pennsylvania
Updated on 27 February 2022
Accepts healthy volunteers


The purpose of this study is to test different methods of preparation that can be used prior to a test called an FDG PET/CT scan. FDG PET/CT scans are routinely done for evaluation of heart inflammation. Standard preparation for the scan includes a ketogenic (high fat and low carbohydrate) diet for 24 hours and overnight fasting to help suppress the amount of sugar taken up in the heart muscle. However, Investigator still do not know if this preparation is the most effective method. So the Investigator, want to investigate alternative methods for decreasing the amount of sugar uptake seen in the heart during FDG PET/CT scan, thus, investigator will have participants try up to 3 different methods of preparation prior to the FDG PET/CT scans to see which type of preparation works the best.

Condition Healthy
Treatment FDG, Ketone Drink, Ketogenetic Diet
Clinical Study IdentifierNCT04275453
SponsorUniversity of Pennsylvania
Last Modified on27 February 2022


Yes No Not Sure

Inclusion Criteria

Adult patients, at least 18 years of age
No history of cardiovascular disease, including hypertension, hyperlipidemia, coronary artery disease, cardiac surgery, arrhythmias per medical record review and/or self-report
No history of diabetes mellitus, chronic liver or kidney disease per medical record review and/or self-report
Participants must be informed of the investigational nature of this study and provide written informed consent in accordance with institutional and federal guidelines prior to study-specific procedures

Exclusion Criteria

Females who are pregnant or breast-feeding at the time of screening will not be eligible for this study. Female participants of child-bearing potential will have a urine or serum pregnancy test before the first study visit
Inability to tolerate imaging procedures in the opinion of the investigator or treating physician
Serious or unstable medical or psychological conditions that, in the opinion of the investigator would compromise the subject's safety or successful participation in the study
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