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Related Concept Videos

Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...

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Related Experiment Video

Updated: Jul 8, 2026

Quantification of Atherosclerotic Plaque Activity and Vascular Inflammation using [18-F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT)
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Quantification of Atherosclerotic Plaque Activity and Vascular Inflammation using [18-F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT)

Published on: May 2, 2012

[Normal variants and frequent pitfalls with (18)FDG PET/CT study].

Gisela Del Rocío Estrada-Sánchez1, Javier Altamirano-Ley, Francisco Javier Ochoa-Carrillo

  • 1Unidad PET/CT, C.T. Scanner del Sur, México, D.F., Mexico. dragiselaus@yahoo.com

Cirugia Y Cirujanos
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Summary

Understanding normal Fluordeoxyglucose (FDG) uptake in PET/CT scans is crucial for accurate diagnosis. This study details physiological FDG distribution, helping differentiate normal findings from potential tumors.

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Area of Science:

  • Nuclear Medicine
  • Radiochemistry
  • Oncology Imaging

Context:

  • Fluorodeoxyglucose (FDG) is the primary radiotracer for Positron Emission Tomography/Computed Tomography (PET/CT).
  • Cellular uptake of FDG is mediated by glucose transporter proteins (GLUTs) with varying tissue distribution.
  • Knowledge of physiological uptake is essential for interpreting PET/CT scans.

Purpose:

  • To expand the understanding of normal physiological FDG uptake patterns in PET/CT.
  • To provide a comprehensive list of common sites of physiological FDG accumulation.
  • To aid in distinguishing normal physiological uptake from pathological hypermetabolism.

Summary:

  • Physiological FDG uptake occurs in numerous organs including the brain, salivary glands, brown fat, myocardium, liver, kidneys, and bone marrow.
  • Specific GLUT transporter subtypes influence FDG uptake in various tissues.
  • Understanding these patterns is key to avoiding misinterpretation of PET/CT findings.

Impact:

  • Accurate identification of physiological FDG uptake sites improves diagnostic accuracy in PET/CT.
  • Reduces the likelihood of false-positive findings, particularly in differentiating benign conditions from neoplastic disease.
  • Enhances the clinical utility of FDG PET/CT in oncological and non-oncological imaging.