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Accelerating reconstruction of reference digital tomosynthesis using graphics hardware.

Publication ,  Journal Article
Yan, H; Ren, L; Godfrey, DJ; Yin, F-F
Published in: Med Phys
October 2007

The successful implementation of digital tomosynthesis (DTS) for on-board image guided radiation therapy (IGRT) requires fast DTS image reconstruction. Both target and reference DTS image sets are required to support an image registration application for IGRT. Target images are usually DTS image sets reconstructed from on-board projections, which can be accomplished quickly using the conventional filtered backprojection algorithm. Reference images are DTS image sets reconstructed from digitally reconstructed radiographs (DRRs) previously generated from conventional planning CT data. Generating a set of DRRs from planning CT is relatively slow using the conventional ray-casting algorithm. In order to facilitate DTS reconstruction within a clinically acceptable period of time, we implemented a high performance DRR reconstruction algorithm on a graphics processing unit of commercial PC graphics hardware. The performance of this new algorithm was evaluated and compared with that which is achieved using the conventional software-based ray-casting algorithm. DTS images were reconstructed from DRRs previously generated by both hardware and software algorithms. On average, the DRR reconstruction efficiency using the hardware method is improved by a factor of 67 over the software method. The image quality of the DRRs was comparable to those generated using the software-based ray-casting algorithm. Accelerated DRR reconstruction significantly reduces the overall time required to produce a set of reference DTS images from planning CT and makes this technique clinically practical for target localization for radiation therapy.

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Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

October 2007

Volume

34

Issue

10

Start / End Page

3768 / 3776

Location

United States

Related Subject Headings

  • User-Computer Interface
  • Tomography, X-Ray Computed
  • Software
  • Reference Values
  • Radiotherapy Planning, Computer-Assisted
  • Radiotherapy
  • Phantoms, Imaging
  • Nuclear Medicine & Medical Imaging
  • Models, Statistical
  • Imaging, Three-Dimensional
 

Citation

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Yan, H., Ren, L., Godfrey, D. J., & Yin, F.-F. (2007). Accelerating reconstruction of reference digital tomosynthesis using graphics hardware. Med Phys, 34(10), 3768–3776. https://doi.org/10.1118/1.2779945
Yan, Hui, Lei Ren, Devon J. Godfrey, and Fang-Fang Yin. “Accelerating reconstruction of reference digital tomosynthesis using graphics hardware.Med Phys 34, no. 10 (October 2007): 3768–76. https://doi.org/10.1118/1.2779945.
Yan H, Ren L, Godfrey DJ, Yin F-F. Accelerating reconstruction of reference digital tomosynthesis using graphics hardware. Med Phys. 2007 Oct;34(10):3768–76.
Yan, Hui, et al. “Accelerating reconstruction of reference digital tomosynthesis using graphics hardware.Med Phys, vol. 34, no. 10, Oct. 2007, pp. 3768–76. Pubmed, doi:10.1118/1.2779945.
Yan H, Ren L, Godfrey DJ, Yin F-F. Accelerating reconstruction of reference digital tomosynthesis using graphics hardware. Med Phys. 2007 Oct;34(10):3768–3776.

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

October 2007

Volume

34

Issue

10

Start / End Page

3768 / 3776

Location

United States

Related Subject Headings

  • User-Computer Interface
  • Tomography, X-Ray Computed
  • Software
  • Reference Values
  • Radiotherapy Planning, Computer-Assisted
  • Radiotherapy
  • Phantoms, Imaging
  • Nuclear Medicine & Medical Imaging
  • Models, Statistical
  • Imaging, Three-Dimensional