التفاصيل البيبلوغرافية
| العنوان: |
A simulation study of BrachyShade, a shadow-based internal source tracking system for HDR prostate brachytherapy. |
| المؤلفون: |
Roumani Alabd, Mitra Safavi-Naeini, Keenan J Wilson, Anatoly B Rosenfeld, Daniel R Franklin |
| المصدر: |
Physics in Medicine & Biology; Oct2018, Vol. 63 Issue 20, p1-1, 1p |
| مصطلحات موضوعية: |
RADIOISOTOPE brachytherapy, ARTIFICIAL implants, SIMULATION methods & models, OPERATIONS research, SYSTEMS engineering |
| مستخلص: |
This paper presents a simulation study of BrachyShade, a proposed internal source-tracking system for real time quality assurance in high dose rate prostate brachytherapy. BrachyShade consists of a set of spherical tungsten occluders located above a pixellated silicon photodetector. The source location is estimated by minimising the mean squared error between a parametric model of the shadow image and acquired images of the shadows projected on the detector plane. A novel algorithm is finally employed to correct the systemic error resulting from Compton scattering in the medium. The worst-case error obtained with BrachyShade for a 13.5 ms image acquisition is less than 1.3 mm in the most distant part of the treatment volume, while for 75% of source locations an error of less than 0.42 mm was achieved. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |