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FDG: Patient Preparation

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Let's discuss patient preparation prior to an FDG PET CT.

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Patients will be given several things to follow prior to

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arriving to the scanner.

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These are mostly related to the glucose metabolism,

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to make sure that the glucose levels in blood are

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within a range that is desired,

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but also to avoid

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having FDG uptake in other areas such muscle.

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For example, patients are asked to fast four to six hours

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prior to the study to avoid picks of insulin in blood.

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It's important for them to arrive with a good hydration

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to encourage renal excretion.

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During the AP phase, which is the phase

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between the injection

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and acquisition, patients will remain seated

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and in silent, uh, to avoid using musculature

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because these would divert the glucose.

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The FDG from the areas that we want to see to areas that are

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irrelevant to us, and

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for the same reason they should not do exercise

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at least six hours prior.

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But preferably, we tell them

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to not exercise the 24 hours prior to the study.

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As I said earlier, we're gonna check the glucose levels

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before injecting FDG, and these should be between 70

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and 200 milligrams per deciliter.

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Diabetic patients are always a challenge, particularly those

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that are treated with insulin.

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These scenarios are beyond the scope

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of the scores, but you will be given reference

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to have the recommended guidelines based on the society

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of Nuclear Medicine and molecular imaging.

Report

Faculty

Elisa Franquet Elia, MD

Assistant Professor of Radiology

UMass Chan Medical School

Tags

Response and assessment

PET/CT FDG

PET

Oncologic Imaging

Nuclear Medicine

Neoplastic

General Oncologic Imaging Concepts