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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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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...
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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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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Optimizing craniofacial CT technique.

Hemant A Parmar1, Mohannad Ibrahim1, Suresh K Mukherji2

  • 1Department of Radiology, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA.

Neuroimaging Clinics of North America
|August 4, 2014
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Summary
This summary is machine-generated.

Computed tomography (CT) use has increased, raising patient radiation doses. This article reviews CT physics, dose reduction methods, and advanced techniques like cone beam CT for optimization.

Keywords:
CTMaxillofacialOptimizationTechnique

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Area of Science:

  • Radiology and Medical Imaging
  • Radiation Physics

Background:

  • Significant rise in computed tomography (CT) utilization over the past 20 years in the US.
  • Associated increase in patient radiation dose necessitates protocol optimization.

Purpose of the Study:

  • To discuss the fundamental physics of CT techniques.
  • To review current and emerging methods for reducing radiation dose in CT.
  • To introduce specialized CT applications in the maxillofacial region.

Main Methods:

  • Review of basic physics principles governing CT imaging.
  • Analysis of factors influencing CT radiation dose.
  • Description of established and novel dose reduction strategies.
  • Overview of advanced CT modalities (3D CT, cone beam CT, dual-energy CT).

Main Results:

  • Identified key factors affecting CT radiation dose.
  • Outlined various techniques for dose reduction.
  • Highlighted specialized CT applications relevant to maxillofacial imaging.

Conclusions:

  • Optimizing CT protocols is crucial due to increased study volume and radiation exposure.
  • Understanding CT physics and dose reduction options is essential for patient safety.
  • Advanced CT techniques offer further possibilities for targeted imaging and dose management.