Brachytherapy source reconstruction for estimating the dose distribution and source position with SPECT system: Monte Carlo method

Minseok Park, Haijo Jung, Gisub Kim, Younghoon Ji, Seyoung Park, Jung Min Kim, Inseok Choi, Hyunji Kim, Yongsu Yoon

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

Abstract

Brachytherapy is term used to describe the short distance treatments of cancer with encapsulated radioactive source. Currently, high dose rate brachytherapy with Iridium-192 is mainly used in radiation treatment. In conventional brachytherapy, C-arm and ultrasound imaging device is used to simply confirm the location of source. However, the dose distribution of radiation source in human body and location of source is necessary to be measured accurately in brachytherapy. In this study, we investigate the feasibility of applying the SPECT (Single Photon Emission Computed Tomography) system for estimating the dose distribution of after-loading brachytherapy source. The three-dimensional dose distribution of brachy-therapy source detected by SPECT system was simulated using a detection system with planar detector provided two-dimensional projection of three-dimensional configuration around the phantom. Scintillation detectors which were consisted of 0.5 × 0.5 × 5 mm 3 BGO pixels with 3mm parallel lead collimator were arrayed. To construct three-dimensional image in SPECT system configuration images were taken around 360 degree. The two-dimensional projection represented the dose distribution and the location of source. However two-dimensional projection limited to confirm the location of source. Therefore, projection images were reconstructed by using filtered back-projection method. The three-dimensional reconstruction image during the brachy-therapy treatment was well matched the location of source in phantom. In addition, the dose distribution in phantom was able to be acquired through the SPECT system.

Original languageEnglish
Title of host publication2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479905348
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013 - Seoul, Korea, Republic of
Duration: 2013 Oct 272013 Nov 2

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
CountryKorea, Republic of
CitySeoul
Period13/10/2713/11/2

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ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Cite this

Park, M., Jung, H., Kim, G., Ji, Y., Park, S., Kim, J. M., Choi, I., Kim, H., & Yoon, Y. (2013). Brachytherapy source reconstruction for estimating the dose distribution and source position with SPECT system: Monte Carlo method. In 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013 [6829606] (IEEE Nuclear Science Symposium Conference Record). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2013.6829606