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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...
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...
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 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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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
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Optimizing dose in computed tomographic guided procedures.

Robert G Dixon1, Kent Ogden

  • 1Department of Radiology, University of North Carolina School of Medicine, 101 Manning Dr, Chapel Hill, NC 27599-7510, USA. Bob_Dixon@med.unc.edu

Techniques in Vascular and Interventional Radiology
|August 21, 2010
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) use is increasing, contributing significantly to medical radiation exposure. This review focuses on optimizing patient radiation dose during CT-guided procedures.

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X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
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Published on: September 11, 2011

Area of Science:

  • Medical Imaging
  • Radiology
  • Radiation Physics

Background:

  • Computed tomography (CT) utilization has risen by ~10% annually, with 62 million US examinations in 2006.
  • CT scans represent 15% of radiologic exams but account for ~50% of public medical radiation exposure.
  • CT-guided interventions are a small but significant source of patient radiation dose.

Purpose of the Study:

  • To review and present techniques for optimizing patient radiation exposure during CT-guided interventions.
  • To highlight the importance of dose reduction strategies in interventional CT procedures.

Main Methods:

  • Review of current literature on CT dose optimization.
  • Discussion of technical parameters and procedural adjustments for minimizing radiation.
  • Analysis of factors influencing radiation dose in CT-guided procedures.

Main Results:

  • Specific techniques can effectively reduce patient radiation dose during CT-guided interventions.
  • Careful protocol selection and procedural modifications are crucial for dose management.
  • Understanding radiation physics is key to implementing effective dose reduction strategies.

Conclusions:

  • Optimizing patient exposure during CT-guided procedures is essential due to significant radiation delivery.
  • Implementing dose-saving techniques can mitigate risks associated with interventional CT.
  • Further research and clinical practice should prioritize radiation dose reduction in CT-guided interventions.