Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-24 @ 8:00 PM
Ignite Modification Date:
2025-12-24 @ 8:00 PM
NCT ID:
NCT03204604
Brief Summary:
The Brain Ketone Body Challenge Imaging Study will measure how the brain uses different fuels. To do this, radioactive compounds will be used during Positron Emission Tomography (PET) imaging.
These compounds, called \[11C\]Acetoacetate (AcAc) and \[18F\] Fludeoxyglucose (FDG), are similar to the sugars and fats the brain already uses for fuel. These compounds safely allow researchers to see how the brain uses sugars and fats during PET scans.
Detailed Description:
After consuming a chilled 4 ounce shake which contains various dietary fats, cognitive testing and dual-tracer Positron Emission Tomography scan will be completed. At Visit 1, each participant will be randomized to Challenge A (low calorie Ensure®) or Challenge B (Ensure® plus ketone esters). At Visit 2, each participant will undergo the remaining challenge (A or B) prior to the second imaging session. Each visit is designed to be identical to the other and only vary the dose of ketone esters. Randomization to either Challenge at Visit 1 will ensure that test/re-test learning effects are equally distributed between the challenge groups. This study consists of two visits that will take place over a two week period.
Study:
NCT03204604
Study Brief:
Protocol Section:
NCT03204604