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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.
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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.
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Quantitative Computed Tomography-Current Status and New Developments.

Klaus Engelke1

  • 1Institute of Medical Physics, University of Erlangen, Erlangen, Germany; Bioclinica, Inc, Hamburg, Germany.

Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry
|July 18, 2017
PubMed
Summary
This summary is machine-generated.

Quantitative computed tomography (CT) advances include opportunistic screening of clinical CT scans for fracture risk assessment. Research also focuses on analyzing cortical bone parameters and porosity using advanced CT imaging techniques.

Keywords:
Asynchronous calibrationcortical bonecortical porosityopportunistic screeningquantitative computed tomography (QCT)

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Area of Science:

  • Radiology
  • Medical Imaging
  • Bone Densitometry

Background:

  • Quantitative computed tomography (CT) is increasingly recognized for its clinical value in assessing bone health.
  • The International Society for Clinical Densitometry supports the use of clinical whole-body CT scanners for quantitative CT of the spine and hip.
  • Emerging techniques leverage existing clinical CT scans for dual purposes, such as opportunistic fracture risk prediction.

Purpose of the Study:

  • To review recent developments and ongoing controversies in quantitative computed tomography.
  • To highlight new approaches in opportunistic screening using clinical CT scans.
  • To discuss advancements in assessing cortical bone parameters and porosity.

Main Methods:

  • Review of current literature and guidelines on quantitative computed tomography.
  • Analysis of techniques for opportunistic screening using diagnostic CT scans.
  • Examination of methods for measuring cortical thickness, mass, bone density, and porosity from CT images.

Main Results:

  • Clinical CT scanners are validated for quantitative CT of the spine and hip.
  • Opportunistic screening offers a dual-use approach for CT scans, aiding fracture risk prediction.
  • New techniques are emerging for detailed cortical bone assessment, including porosity measurement.

Conclusions:

  • Quantitative computed tomography, particularly through opportunistic screening, holds significant clinical potential for fracture risk assessment.
  • Further research into cortical bone parameters and porosity measurement using advanced CT techniques is warranted.
  • The integration of quantitative CT into routine clinical practice is expanding.