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Adaptive portal CT reconstruction: a simulation study.

Publication ,  Journal Article
Guan, H; Yin, FF; Zhu, Y; Kim, JH
Published in: Med Phys
October 2000

In radiotherapy, radiation treatment beams contain valuable information for patient setup verification. These beams may be used for portal CT reconstruction. However, direct use of the beam data for reconstruction may yield inadequate CT images simply because these beams cover only a part of the patient body. In this study, we use the treatment beams in addition to a set of regular CT projection beams to reconstruct a locally enhanced portal CT image. This approach is called adaptive portal CT reconstruction. A computer simulation demonstrated the advantages of the approach. The image reconstruction was carried out by the multilevel scheme algebraic reconstruction technique. Results indicated that the image quality of adaptive portal CT reconstruction is equivalent to that obtained from a full set of projections. This proposed technique should be not only valuable for three-dimensional radiotherapy verification, but also applicable to diagnostic CT imaging.

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Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

October 2000

Volume

27

Issue

10

Start / End Page

2209 / 2214

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Radiotherapy Planning, Computer-Assisted
  • Radiographic Image Interpretation, Computer-Assisted
  • Quality Control
  • Phantoms, Imaging
  • Nuclear Medicine & Medical Imaging
  • Humans
  • Computer Simulation
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
 

Citation

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Guan, H., Yin, F. F., Zhu, Y., & Kim, J. H. (2000). Adaptive portal CT reconstruction: a simulation study. Med Phys, 27(10), 2209–2214. https://doi.org/10.1118/1.1312193
Guan, H., F. F. Yin, Y. Zhu, and J. H. Kim. “Adaptive portal CT reconstruction: a simulation study.Med Phys 27, no. 10 (October 2000): 2209–14. https://doi.org/10.1118/1.1312193.
Guan H, Yin FF, Zhu Y, Kim JH. Adaptive portal CT reconstruction: a simulation study. Med Phys. 2000 Oct;27(10):2209–14.
Guan, H., et al. “Adaptive portal CT reconstruction: a simulation study.Med Phys, vol. 27, no. 10, Oct. 2000, pp. 2209–14. Pubmed, doi:10.1118/1.1312193.
Guan H, Yin FF, Zhu Y, Kim JH. Adaptive portal CT reconstruction: a simulation study. Med Phys. 2000 Oct;27(10):2209–2214.

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

October 2000

Volume

27

Issue

10

Start / End Page

2209 / 2214

Location

United States

Related Subject Headings

  • Tomography, X-Ray Computed
  • Radiotherapy Planning, Computer-Assisted
  • Radiographic Image Interpretation, Computer-Assisted
  • Quality Control
  • Phantoms, Imaging
  • Nuclear Medicine & Medical Imaging
  • Humans
  • Computer Simulation
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering