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X-ray computed tomography.

Willi A Kalender1

  • 1Institute of Medical Physics, University Erlangen-Nuernberg, Henkestr. 91, D-91052 Erlangen, Germany. willi.kalender@imp.uni-erlangen.de

Physics in Medicine and Biology
|June 23, 2006
PubMed
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X-ray computed tomography (CT) has evolved significantly since 1972, transitioning from slice-by-slice to volume imaging with spiral scanning. Modern CT technology offers rapid, high-resolution imaging, demonstrating a renaissance in clinical applications.

Area of Science:

  • Medical Imaging Technology
  • Radiology
  • Diagnostic Imaging

Background:

  • X-ray computed tomography (CT) revolutionized medical imaging upon its introduction in 1972.
  • Despite predictions of obsolescence, CT has experienced continuous technological advancement and increased clinical utility.
  • Key innovations include spiral scanning and array detector technology, enhancing imaging capabilities.

Purpose of the Study:

  • To provide a chronological review of X-ray computed tomography (CT) technology.
  • To examine the evolution of CT image quality and clinical applications.
  • To highlight recent and novel developments in CT imaging.

Main Methods:

  • Review of historical technological advancements in CT.
  • Analysis of image quality improvements over time.

Related Experiment Videos

  • Chronological overview of clinical applications and emerging uses.
  • Focus on recent innovations like dual-source CT and micro-CT.

    • Main Results:

    • CT has progressed from slice-by-slice to true volume imaging with spiral scanning.
    • Array detector technology enables whole-body imaging in seconds with sub-millimetre resolution.
    • CT continues to innovate, with current developments showing a high rate of advancement.

    Conclusions:

    • CT has demonstrated remarkable resilience and innovation, surpassing earlier predictions of replacement by other modalities.
    • Technological progress has led to significant improvements in speed, resolution, and clinical utility.
    • The field of CT imaging is currently experiencing a period of rapid innovation and expanding applications.