Seed based registration for intraoperative brachytherapy dosimetry: A comparison of methods

Yi Su, Brian J. Davis, Michael G. Herman, Richard A. Robb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Several approaches for registering a subset of imaged points to their true origins were analyzed and compared for seed based TRUS-fluoroscopy registration. The methods include the Downhill Simplex method (DS), the Powell's method (POW), the Iterative Closest Point (ICP) method, the Robust Point Matching method (RPM) and variants of RPM. Several modifications were made to the standard RPM method to improve its performance. One hundred simulations were performed for each combination of noise level, seed detection rate and spurious points and the registration accuracy was evaluated and compared. The noise level ranges from 0 to 5mm, the seed detection ratio ranges from 0.2 to 0.6, and the number of spurious points ranges from 0 to 20. An actual clinical post-implant dataset from permanent prostate brachytherapy was used for the simulation study. The experiments provided evidence that our modified RPM method is superior to other methods, especially when there are many outliers. The RPM based method produced the best results at all noise levels and seed detection rates. The DS based method performed reasonably well, especially at low noise levels without spurious points. There was no significant performance difference between the standard RPM and our modified RPM methods without spurious points. The modified RPM methods outperformed the standard RPM method with large number of spurious points. The registration error was within 2mm, even with 20 outlier points and a noise level of 3mm.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6144 II
DOIs
StatePublished - 2006
EventMedical Imaging 2006: Image Processing - San Diego, CA
Duration: Feb 13 2006Feb 16 2006

Other

OtherMedical Imaging 2006: Image Processing
CitySan Diego, CA
Period2/13/062/16/06

Fingerprint

Dosimetry
Seed
Experiments

Keywords

  • Brachytherapy
  • CT
  • Registration
  • Ultrasound
  • X-ray

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Su, Y., Davis, B. J., Herman, M. G., & Robb, R. A. (2006). Seed based registration for intraoperative brachytherapy dosimetry: A comparison of methods. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 6144 II). [61442R] https://doi.org/10.1117/12.653277

Seed based registration for intraoperative brachytherapy dosimetry : A comparison of methods. / Su, Yi; Davis, Brian J.; Herman, Michael G.; Robb, Richard A.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6144 II 2006. 61442R.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Su, Y, Davis, BJ, Herman, MG & Robb, RA 2006, Seed based registration for intraoperative brachytherapy dosimetry: A comparison of methods. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 6144 II, 61442R, Medical Imaging 2006: Image Processing, San Diego, CA, 2/13/06. https://doi.org/10.1117/12.653277
Su Y, Davis BJ, Herman MG, Robb RA. Seed based registration for intraoperative brachytherapy dosimetry: A comparison of methods. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6144 II. 2006. 61442R https://doi.org/10.1117/12.653277
Su, Yi ; Davis, Brian J. ; Herman, Michael G. ; Robb, Richard A. / Seed based registration for intraoperative brachytherapy dosimetry : A comparison of methods. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6144 II 2006.
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