SU-D-207-07: Implementation of Full/half Bowtie Filter Model in a Commercial Treatment Planning System for Kilovoltage X-Ray Imaging Dose Estimation

2015 ◽  
Vol 42 (6Part4) ◽  
pp. 3219-3219
Author(s):  
S Kim ◽  
P Alaei
Keyword(s):  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System ◽  
Dose Estimation ◽  
Filter Model ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Dose

Two Quality Control Procedures on Radiotherapy Beam Calibration and Treatment Planning System Implementation

1998 ◽  
Vol 84 (2) ◽  
pp. 150-154 ◽  
Author(s):  
Angelo Piermattei ◽  
Luigi Azario ◽  
Stefania delle Canne ◽  
Andrea Fidanzio ◽  
Giovanni Palazzoni
Keyword(s):  
Quality Control ◽  
Treatment Planning ◽  
High Energy ◽  
Planning System ◽  
Treatment Planning System ◽  
Silicon Detectors ◽  
X Ray ◽  
Silicon Diode ◽  
Output Factors ◽  
Control Procedures

New challenging dosimetric approaches, such as narrow beams and 3D algorithms, are being used in radiotherapy. In this paper two quality control (QC) procedures are reported. The first one concerns the QC of the dosimetry of small x-ray beams, generally carried out by using silicon detectors. The comparison of dose values obtained by a silicon diode, a diamond detector, and radiochromic films shows that for x-ray beams of high energy, the silicon diode can give an overestimation of the output factors in phantom, up to 4%. This is due to the higher than unit density silicon diode and the surrounding envelope that restore the lateral electron equilibrium. About the 3D algorithms for breast treatment planning, a quality control test has been adopted to verify the accuracy of the computed dosimetry when “loss of scatter” occurs. The results show a sensible agreement (within 1.5%) between computed and experimental data.

scholarly journals PO-0868: Neutron peripheral dose estimation: treatment planning system implementation

2015 ◽  
Vol 115 ◽  
pp. S442-S443
Author(s):  
T. García Hernández ◽  
M. Ortiz ◽  
L. Irazola ◽  
J.A. Terrón ◽  
M. Romero-Expósito ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System ◽  
Dose Estimation ◽  
System Implementation ◽  
Peripheral Dose

scholarly journals Energy spectra considerations for synchrotron radiotherapy trials on the ID17 bio-medical beamline at the European Synchrotron Radiation Facility

2015 ◽  
Vol 22 (4) ◽  
pp. 1035-1041 ◽  
Author(s):  
Jeffrey C. Crosbie ◽  
Pauline Fournier ◽  
Stefan Bartzsch ◽  
Mattia Donzelli ◽  
Iwan Cornelius ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Synchrotron Radiation ◽  
Treatment Planning ◽  
European Synchrotron Radiation Facility ◽  
Planning System ◽  
Energy Spectra ◽  
Treatment Planning System ◽  
X Ray ◽  
Depth Dose ◽  
Cylindrical Ionization Chamber

The aim of this study was to validate the kilovoltage X-ray energy spectrum on the ID17 beamline at the European Synchrotron Radiation Facility (ESRF). The purpose of such validation was to provide an accurate energy spectrum as the input to a computerized treatment planning system, which will be used in synchrotron microbeam radiotherapy trials at the ESRF. Calculated and measured energy spectra on ID17 have been reported previously but recent additions and safety modifications to the beamline for veterinary trials warranted a fresh investigation. The authors used an established methodology to compare X-ray attenuation measurements in copper sheets (referred to as half value layer measurements in the radiotherapy field) with the predictions of a theoretical model. A cylindrical ionization chamber in air was used to record the relative attenuation of the X-ray beam intensity by increasing thicknesses of high-purity copper sheets. The authors measured the half value layers in copper for two beamline configurations, which corresponded to differing spectral conditions. The authors obtained good agreement between the measured and predicted half value layers for the two beamline configurations. The measured first half value layer was 1.754 ± 0.035 mm Cu and 1.962 ± 0.039 mm Cu for the two spectral conditions, compared with theoretical predictions of 1.763 ± 0.039 mm Cu and 1.984 ± 0.044 mm Cu, respectively. The calculated mean energies for the two conditions were 105 keV and 110 keV and there was not a substantial difference in the calculated percentage depth dose curves in water between the different spectral conditions. The authors observed a difference between their calculated energy spectra and the spectra previously reported by other authors, particularly at energies greater than 100 keV. The validation of the beam spectrum by the copper half value layer measurements means the authors can provide an accurate spectrum as an input to a treatment planning system for the forthcoming veterinary trials of microbeam radiotherapy to spontaneous tumours in cats and dogs.

Verification for dose estimation performance of a Monte-Carlo based treatment planning system in University of Tsukuba

2020 ◽  
Vol 166 ◽  
pp. 109222
Author(s):  
Hiroaki Kumada ◽  
Kenta Takada ◽  
Teruhito Aihara ◽  
Akira Matsumura ◽  
Hideyuki Sakurai ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System ◽  
Dose Estimation ◽  
Estimation Performance
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