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Related Experiment Videos

AAPM/RSNA physics tutorial for residents: topics in CT. Image processing in CT.

Dianna D Cody1

  • 1Division of Diagnostic Imaging, Department of Imaging Physics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Box 56, Houston, TX 77030-4009, USA. dcody@mdanderson.org

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|September 18, 2002
PubMed
Summary

Computed Tomography (CT) image processing enhances radiology through advanced reformatting, 3D rendering, and perfusion analysis. These techniques improve diagnostic value and patient outcomes by providing detailed physiologic insights.

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Area of Science:

  • Radiology and Medical Imaging
  • Computational Imaging
  • Biomedical Engineering

Background:

  • Clinical radiology departments utilize various image processing methods for computed tomographic (CT) examinations.
  • Image processing encompasses reformatting, 3D displays, and physiologic analysis of CT data.

Purpose of the Study:

  • To review current image processing techniques in clinical radiology.
  • To highlight the value of advanced postprocessing in improving patient outcomes.

Main Methods:

  • Reformatting: Manipulating original CT voxels into sagittal, coronal, oblique, and curved views.
  • 3D Rendering: Employing volume and surface rendering for three-dimensional visualization of axial images.
  • CT Perfusion: Measuring physiologic parameters over time for dynamic imaging analysis.

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Main Results:

  • Standard reformatting includes sagittal, coronal, oblique, and curved views.
  • Advanced reformatting techniques like maximum-intensity projection and variable thickness viewing are available.
  • Volume and surface rendering create 3D views from axial CT data.
  • CT perfusion enables dynamic physiologic assessment.

Conclusions:

  • Image processing techniques like reformatting and rendering add significant value to CT examinations.
  • Postprocessing CT data can lead to improved patient outcomes.
  • CT perfusion analysis offers valuable physiologic insights.