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Related Experiment Videos

Search for isotropic resolution in CT from conventional through multiple-row detector.

Mahadevappa Mahesh1

  • 1Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 601 N Caroline St, Baltimore, MD 21287-0856, USA. mmahesh@jhmi.edu

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|July 12, 2002
PubMed
Summary

Computed tomography (CT) advancements enable faster scans and higher resolution. Modern helical scanners provide near-isotropic 3D imaging, revolutionizing medical diagnostics beyond early designs.

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Area of Science:

  • Medical Imaging
  • Radiology
  • Diagnostic Technology

Background:

  • Computed tomography (CT) reconstructs cross-sectional images from attenuation measurements.
  • CT offers superior contrast and eliminates superimposed tissues compared to conventional radiography.
  • Key developments focus on improving scan speed, spatial resolution, and reconstruction time.

Purpose of the Study:

  • To review the evolution of computed tomography (CT) technology.
  • To highlight advancements leading to practical three-dimensional (3D) imaging.
  • To describe the capabilities of modern multi-detector helical CT scanners.

Main Methods:

  • Review of technological progression in CT scanners.
  • Focus on the impact of helical scanning and multi-detector technology.

Related Experiment Videos

  • Analysis of improvements in acquisition speed and image resolution.

    • Main Results:

    • Early CT designs improved speed and resolution but lacked true 3D capabilities.
    • Helical scanning enabled practical three-dimensional (3D) imaging.
    • Multi-row detector helical scanners achieve near-isotropic resolution and rapid volume scanning.

    Conclusions:

    • CT technology has evolved significantly, enabling faster and more detailed imaging.
    • Helical and multi-detector technologies represent major breakthroughs in CT.
    • Modern CT scanners provide high-quality 3D images, advancing diagnostic capabilities.