Cone-Beam Computed Tomography for Image-Guided Radiation Therapy of Prostate Cancer

Abstract

The success of intensity-modulated radiation therapy (IMRT) or 4-D conformal radiation therapy (CRT) is heavily reliant on accurate image guidance in prostate cancer treatment. Cone-beam computed tomography (CBCT) is becoming one of the dominant imaging modalities for image-guidance, but current technology based on Feldkamp algorithm for image reconstruction from a circular scanning trajectory does not yield sufficient quality of images. In addition, imaging-radiation dose is one of the key issues, which has to be minimized or optimized. We report innovative CBCT scanning methods and corresponding image reconstruction algorithms that can increase the accuracy of the images and/or reduce patient dose from CBCT. Reverse helical CBCT has been developed, region-of-interest image reconstruction methods have been explored, and a few-view CBCT approach has been proposed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2008
Accession Number
ADA480276

Entities

People

  • Seungryong Cho

Organizations

  • University of Chicago

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Complementary Metal-Oxide Semiconductors
  • Detectors
  • Geometry
  • Health Services
  • Image Reconstruction
  • Imaging Techniques
  • Neoplasms
  • Prostate Cancer
  • Radiation
  • Radiology
  • Three Dimensional
  • Tomography
  • Two Dimensional
  • X Rays
  • X-Ray Computed Tomography

Fields of Study

  • Medicine
  • Physics

Readers

  • Image Processing and Computer Vision.
  • Medical Imaging.