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Related Concept Videos

Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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...
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...
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
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...

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Hand-held Clinical Photoacoustic Imaging System for Real-time Non-invasive Small Animal Imaging
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PET/CT imaging techniques, considerations, and artifacts.

Osama Mawlawi1, Tinsu Pan, Homer A Macapinlac

  • 1Department of Imaging Physics, Unit 1352, MD Anderson Cancer Center, Houston, TX 77230, USA. omawlawi@mdanderson.org

Journal of Thoracic Imaging
|June 14, 2006
PubMed
Summary
This summary is machine-generated.

Positron emission tomography/computed tomography (PET/CT) offers combined imaging benefits for cancer diagnosis and staging. This overview covers PET/CT basics, advantages, artifacts, and its role in radiation therapy planning.

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Area of Science:

  • Medical Imaging
  • Nuclear Medicine
  • Radiology

Background:

  • Positron emission tomography/computed tomography (PET/CT) is a hybrid imaging modality.
  • It integrates functional information from PET with anatomical detail from CT.
  • This combination enhances diagnostic accuracy in oncology.

Purpose of the Study:

  • To provide an overview of PET/CT imaging principles.
  • To discuss the advantages and limitations of PET/CT.
  • To highlight imaging artifacts and correction techniques.

Main Methods:

  • Review of current literature on PET/CT.
  • Analysis of PET/CT principles and applications.
  • Discussion of artifact generation and mitigation strategies.

Main Results:

  • PET/CT offers superior diagnostic performance compared to standalone PET or CT.
  • Common artifacts include motion, attenuation, and scatter.
  • Correction techniques improve image quality and diagnostic reliability.

Conclusions:

  • PET/CT is a valuable tool for cancer diagnosis, staging, and restaging.
  • Understanding and correcting artifacts are crucial for accurate interpretation.
  • PET/CT also shows promise in radiation treatment planning.