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Related Concept Videos

Computed Tomography01:10

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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.
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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...
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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...
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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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[Risk-minimizing tube current modulation for computed tomography].

Marc Kachelrieß1

  • 1Abteilung Röntgenbildgebung und Computertomographie, Deutsches Krebsforschungszentrum (DFKZ), Heidelberg, Deutschland. m.kachelriess@dkfz.de.

Radiologie (Heidelberg, Germany)
|June 12, 2023
PubMed
Summary
This summary is machine-generated.

A new computed tomography (CT) tube current modulation (TCM) method, riskTCM, significantly reduces radiation dose by predicting organ risk. This advanced technique offers substantial dose reduction compared to standard mAsTCM, benefiting patient safety in CT scans.

Keywords:
Deep learningDose reductionImaging qualityRadiation exposureTube current–time product

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Area of Science:

  • Medical Imaging Physics
  • Radiological Sciences
  • Radiation Dosimetry

Context:

  • Computed tomography (CT) examinations involve inherent radiation exposure.
  • Minimizing radiation dose without compromising diagnostic image quality is a primary goal in CT imaging.
  • Current CT systems utilize tube current modulation (TCM) techniques to manage radiation dose.

Purpose:

  • To introduce and evaluate a novel TCM method, termed risk-based TCM (riskTCM), designed to directly minimize patient radiation risk.
  • To compare the efficacy of riskTCM against the established mAs-based TCM (mAsTCM) in dose reduction across various body regions.
  • To assess the potential for clinical implementation of riskTCM through software adaptation.

Summary:

  • Standard mAsTCM adjusts tube current based on patient attenuation, reducing the mAs product but not directly considering organ-specific radiation risk.
  • The proposed riskTCM method predicts organ dose levels and incorporates them into the tube current selection, aiming for optimized radiation risk reduction.
  • Studies demonstrate that riskTCM significantly outperforms mAsTCM in minimizing radiation risk across all examined body regions.

Impact:

  • RiskTCM achieves typical dose reductions of 10%-30% compared to standard mAsTCM.
  • The benefits of riskTCM are particularly pronounced in anatomical areas where mAsTCM offers only moderate dose savings.
  • Implementation of riskTCM requires only a software update, facilitating its integration into clinical practice by CT vendors.