Stopping Power of Proton Beam in Water Phantom: A Simulational Study

2013 ◽  
pp. 79-88
Author(s):  
Sirisha Sathiraju Naga lakshmi ◽  
Sonali Bhatnagar
Keyword(s):  
Proton Beam ◽  
Stopping Power ◽  
Water Phantom

scholarly journals A novel range telescope concept for proton CT

2022 ◽  
Author(s):  
Marc Granado-González ◽  
César Jesús-Valls ◽  
Thorsten Lux ◽  
Tony Price ◽  
Federico Sánchez
Keyword(s):  
Computed Tomography ◽  
Proton Beam ◽  
Energy Resolution ◽  
Plastic Scintillator ◽  
Proton Beam Therapy ◽  
Stopping Power ◽  
High Quality ◽  
X Ray ◽  
Proton Computed Tomography ◽  
Clinical Conditions

Abstract Proton beam therapy can potentially offer improved treatment for cancers of the head and neck and in paediatric patients. There has been asharp uptake of proton beam therapy in recent years as improved delivery techniques and patient benefits are observed. However, treatments are currently planned using conventional x-ray CT images due to the absence of devices able to perform high quality proton computed tomography(pCT) under realistic clinical conditions. A new plastic-scintillator-based range telescope concept, named ASTRA, is proposed here to measure the proton’s energy loss in a pCT system. Simulations conducted using GEANT4 yield an expected energy resolution of 0.7%. If calorimetric information is used the energy resolution could be further improved to about 0.5%. In addition, the ability of ASTRA to track multiple protons simultaneously is presented. Due to its fast components, ASTRA is expected to reach unprecedented data collection rates, similar to 10^8 protons/s.The performance of ASTRA has also been tested by simulating the imaging of phantoms. The results show excellent image contrast and relative stopping power reconstruction.

Stopping power of TGS crystals for proton beam at ferro-paraelectric phase transition

2021 ◽  
Author(s):  
Arundhati H. Patil ◽  
S. S. Kulkarni ◽  
Sangshetty Kalyani ◽  
U. V. Khadke
Keyword(s):  
Phase Transition ◽  
Proton Beam ◽  
Paraelectric Phase ◽  
Stopping Power ◽  
Paraelectric Phase Transition

A dosimetric analysis of proton beam therapy using different snouts

2018 ◽  
Vol 18 (02) ◽  
pp. 180-185
Author(s):  
Khalid Iqbal ◽  
Qurat-ul-ain Shamsi ◽  
Kent A Gifford ◽  
Sania Anum ◽  
Saeed Ahmad Buzdar
Keyword(s):  
Proton Beam ◽  
Modulation Depth ◽  
Proton Beam Therapy ◽  
Proton Beams ◽  
Mean Values ◽  
Water Phantom ◽  
Beam Output ◽  
Dosimetric Analysis ◽  
The Given

AbstractPurposeThis exploration is intended to analyse the dosimetric characteristics of proton beams of multiple energies using different snout sizes.Materials and methodsA synchrotron was used for the extraction of eight proton beam energies (100–250 MeV). Dosimetric measurements were taken in a water phantom that was irradiated with a proton beam emanating from the gantry system at angles 0, 90, 180 and 270 degree using a large and a medium snout. The range of beam energies in the phantom, their corresponding centre modulation depth (CMD) and the width of spread out Bragg peak (SOBP) were measured by Markus chamber. Double scattering technique was employed for the creation of SOBPs.ResultsThe range of proton beams varied from 4·3 cm for 100 MeV beam to 28·5 cm for 250 MeV beam with the medium snout and from 4·3 cm for 100 MeV to 25 cm for 250 MeV beam with large snout in the water phantom. SOBP width showed a variation from 4 to 10 cm with medium and large snout. While determining the output with medium snout, the discrepancy of 1·1% was observed between the maximum and minimum mean values of output for all the given set of energies and angles. There occurred a difference of 0·9% between the maximum and minimum mean values of output with the large snout. Beam output at SOBP centre was 12% higher with large snout as compared to that with medium snout for all the given beam energies. Flatness and symmetry were found within ±2·5% tolerance limits with medium and large snouts.ConclusionFlatness and symmetry were found within explicit limits with both medium and large snouts. Large snout produced higher beam output than that of medium snout at the centre of SOBP. This exploration can be extended to the determination of beam output, flatness and symmetry with a small snout.

Stopping Power of Proton Beam in a Weakly Non-ideal Xenon Plasma

1999 ◽  
Vol 39 (1-2) ◽  
pp. 45-48 ◽  
Author(s):  
V. Mintsev ◽  
V. Gryaznov ◽  
M. Kulish ◽  
A. Filimonov ◽  
V. Fortov ◽  
...  
Keyword(s):  
Proton Beam ◽  
Stopping Power

Correction of stopping power and LET quenching for radiophotoluminescent glass dosimetry in a therapeutic proton beam

2017 ◽  
Vol 62 (23) ◽  
pp. 8869-8881 ◽  
Author(s):  
Weishan Chang ◽  
Yusuke Koba ◽  
Tetsurou Katayose ◽  
Keisuke Yasui ◽  
Chihiro Omachi ◽  
...  
Keyword(s):  
Proton Beam ◽  
Stopping Power

Fusion Energy and Stopping Power in a Degenerate DT Pellet Driven by a Laser-Accelerated Proton Beam

2016 ◽  
Vol 65 (6) ◽  
pp. 761-766 ◽  
Author(s):  
M. Mehrangiz ◽  
A. Ghasemizad ◽  
S. Jafari ◽  
B. Khanbabaei
Keyword(s):  
Proton Beam ◽  
Fusion Energy ◽  
Stopping Power

scholarly journals MCNPX’S Water Equivalent Thickness Simulation of Material with Different Density via Proton Beam Irradiation

2018 ◽  
Vol 7 (4.35) ◽  
pp. 678
Author(s):  
M.A Khattak ◽  
Abdoulhdi. A. Borhana ◽  
Lailatul Fitriyah A. Shafii ◽  
Rustam Khan
Keyword(s):  
Proton Beam ◽  
Computing Time ◽  
Analytical Calculation ◽  
High Dose ◽  
Beam Irradiation ◽  
Equivalent Thickness ◽  
Proton Beam Irradiation ◽  
Approximation Techniques ◽  
Method Of Calculation ◽  
Water Phantom

The radiological thickness of materials and beam penetration range is often referred as the water equivalent thickness (WET). In the clinical application of radiotherapy it is mandatory to obtain a WET calculation with high accuracies to ensure the beam that penetrated the human tissues is capable to deliver high dose of radiation into the deep-rooted tumors and kill the malignant cancerous cell without any major damages to the healthy tissues. Nevertheless, the present method of calculation that is available needs either intensive numerical method or approximation techniques with unknown precision. Hence, the purpose of this research is to study the depth of proton beam irradiation penetration range of materials with arbitrary density & elemental composition and modeled the water equivalent thickness (WET) calculation by using the Monte Carlo N Particle Transport Code Extension (MCNPX). There are several type of material with different density that are utilize in this project which are water phantom (ρ =1.0 g cm-3), PMMA (ρ =1.19 g cm-3) aluminum (ρ = 2.70 g cm-3 lead (ρ =11.3g cm-3). The water phantom represent reference material whilst PMMA, Aluminum and Lead each represent low, medium and high density respectively. Based from the result produced in output file, Bragg curves for each material were reproduced, analyzed and compared with the Bragg curve of water phantom. The WET of water phantom was successfully modelled by using MCNPX. Apart from the short computing time, modelling WET via MCNPX was more efficient compare to analytical calculation

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