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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
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...
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 I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
Toxicity Testing in Animals01:23

Toxicity Testing in Animals

Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...

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Related Experiment Video

Updated: May 31, 2026

Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
10:04

Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates

Published on: September 5, 2017

A study on occupational exposure in a PET/CT facility.

S Vargas Castrillón1, F Cutanda Henríquez

  • 1Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT, Avda Complutense, 22, 28040 Madrid, Spain.

Radiation Protection Dosimetry
|July 8, 2011
PubMed
Summary

Staff occupational exposure during Fluorodeoxyglucose (18F-FDG) studies was assessed. Doses remain well within recommended limits, with a negligible probability of exceeding annual safety thresholds.

Area of Science:

  • Nuclear Medicine
  • Radiological Protection
  • Medical Physics

Background:

  • Staff working with radioactive materials, such as Fluorodeoxyglucose (18F-FDG), require careful monitoring for occupational exposure.
  • Assessing radiation doses is crucial for ensuring safety and optimizing procedures in nuclear medicine facilities.

Purpose of the Study:

  • To evaluate and quantify staff occupational exposure during 18F-FDG Positron Emission Tomography (PET) studies.
  • To establish a radiological map of radiation dose rates in different working areas.
  • To verify that occupational doses are within regulatory limits.

Main Methods:

  • Utilized detectors traceable to Physikalisch-Technische Bundesanstalt (PTB) standards for accurate measurements.
  • Conducted measurements across various working zones and procedures, with a standard injected activity of 400 MBq per patient.

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Murine Lymphocyte Labeling by 64Cu-Antibody Receptor Targeting for In Vivo Cell Trafficking by PET/CT
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Murine Lymphocyte Labeling by 64Cu-Antibody Receptor Targeting for In Vivo Cell Trafficking by PET/CT

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Last Updated: May 31, 2026

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Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
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  • Generated a radiological map by measuring dose rates in proximity to patients, identifying the abdomen as the highest exposure area.

    • Main Results:

    • The maximum estimated dose to the most exposed staff member was 3.6 mSv per year under conservative assumptions.
    • Typical doses near the patient's abdomen, considering staff rotation, were measured at 0.9 ± 0.3 mSv per year.
    • Statistical analysis of data from 50 patients indicated a negligible probability (P < 0.01) of exceeding 20 mSv annually, barring incidents.

    Conclusions:

    • Occupational radiation doses for staff involved in 18F-FDG studies are well within the International Commission on Radiological Protection (ICRP) recommended limits.
    • The findings support the optimization of working procedures to further enhance safety in the facility.
    • This study provides a quantitative basis for radiation safety protocols in 18F-FDG administration and patient handling.