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Evaluation of an anthropomorphic male pelvic phantom for image-guided radiotherapy

Author(s): B Schaly | V Varchena | P Au, G Pang

Journal: Reports in Medical Imaging
ISSN 1179-1586

Volume: 2009;
Issue: default;
Start page: 69;
Date: 2009;
Original page

B Schaly1, V Varchena2, P Au3, G Pang3,41Grand River Regional Cancer Centre, Kitchener, ON, Canada; 2CIRS Inc., Norfolk, VA, USA; 3Odette Cancer Centre, Toronto, ON, Canada; 4Departments of Radiation Oncology and Medical Biophysics, University of Toronto, Toronto, ON, Canada Abstract: Soft-tissue imaging in the treatment room is one of the main challenges faced today in high precision radiotherapy. The objective of this work is to evaluate a new anthropomorphic male pelvic phantom (CIRS Inc., Norfolk, VA, USA) that can be used in a radiotherapy department to assess the ability of an X-ray imaging system for imaging soft-tissue targets in the treatment room. To this end, we evaluated the tissue-equivalency of the phantom materials in terms of the linear attenuation and energy absorption coefficients. X-ray computed tomography (CT) images of the phantom were also obtained and compared with that of patients. Our results demonstrated that the male pelvic phantom is a good representation of actual prostate cancer patients and can be a valuable tool for image-guided radiotherapy. Keywords: image-guided radiotherapy, X-ray imaging, anthropomorphic phantomPACS numbers: 87.56.Fc,, 87.85.Lf
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