Absorbed dose conversion factors for therapeutic kilovoltage and megavoltage x-ray beams calculated by the Monte Carlo method

1997 ◽  
Vol 24 (2) ◽  
pp. 336-336
Author(s):  
Richard T. Knight
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Absorbed Dose ◽  
Conversion Factors ◽  
X Ray ◽  
The Monte Carlo Method

scholarly journals Assessment of the absorbed dose to organs from bone mineral density scan by using TLDS and the Monte Carlo method

2014 ◽  
Vol 29 (4) ◽  
pp. 289-295 ◽  
Author(s):  
Alireza Karimian ◽  
Atefeh Hajarizadeh
Keyword(s):  
Bone Mineral Density ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Bone Mineral ◽  
Absorbed Dose ◽  
Mineral Density ◽  
Left Femur ◽  
X Ray ◽  
Femur Bone ◽  
The Monte Carlo Method

Nowadays, dual energy X-ray absorptiometry is used in bone mineral density systems to assess the amount of osteoporosis. The purpose of this research is to evaluate patient organ doses from dual X-ray absorptiometry by thermoluminescence dosimeters chips and Monte Carlo method. To achieve this goal, in the first step, the surface dose of the cervix, kidney, abdomen region, and thyroid were measured by using TLD-GR 200 at various organ locations. Then, to evaluate the absorbed dose by simulation, the BMD system, patient's body, X-ray source and radiosensitive tissues were simulated by the Monte Carlo method. The results showed, for the spine (left femur) bone mineral density scan by using thermoluminescence dosimeters, the absorbed doses of the cervix and kidney were 4.5 (5.64) and 162.17 (3.99)(mGy), respectively. For spine (left femur) bone mineral density scan in simulation, the absorbed doses of the cervix and kidney were 4.19 (5.88) and 175 (3.68)(mGy), respectively. The data obtained showed that the absorbed dose of the kidney in the spine scan is noticeable. Furthermore, because of the small relative difference between the simulation and experimental results, the radiation absorbed dose may be assessed by simulation and software, especially for internal organs, and at different depths of otherwise inaccessible organs which is not possible in experiments.

Calculation of the radiation dose absorbed by human biological tissue when using imaging equipment in radiоtherapy

2021 ◽  
pp. 56-59
Author(s):  
Irina M. Lebedenko ◽  
Sergej S. Khromov ◽  
Taras V. Bondarenko ◽  
Evgenij M. Chertenkov
Keyword(s):  
Monte Carlo ◽  
Radiation Therapy ◽  
Biological Tissue ◽  
Electron Accelerator ◽  
Absorbed Dose ◽  
Tube Voltage ◽  
X Ray ◽  
The Monte Carlo Method ◽  
Therapeutic Procedures ◽  
Dose Control

Considered the issues of X-ray dose control during diagnostic and therapeutic procedures using imaging tools. The dose of X-ray radiation from the visualization devices absorbed by the biological tissue of a person was determined when monitoring the position of the patient on the therapeutic table of the electron accelerator before the radiation therapy session. The processes of transmission of photons and electrons through the medium were simulated, and the X-ray spectra were measured. The emission spectrum of the Varian G-242 Rotating Anode X-ray Tube was obtained using an XR-100-CdTe spectrometer. The absorbed dose is calculated by the Monte Carlo method. The absorbed dose in the water phantom at tube voltage up to 80 kV was 0,9–1,5 mGy.

Calculation of the X-ray reflectivity of b-class mosaic crystals via the monte carlo method

2011 ◽  
Vol 5 (2) ◽  
pp. 317-321 ◽  
Author(s):  
D. A. Baklanov ◽  
I. E. Vnukov ◽  
Yu. V. Zhandarmov ◽  
G. T. Duong ◽  
S. A. Laktionova ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
X Ray ◽  
The Monte Carlo Method ◽  
Mosaic Crystals

scholarly journals Application of the Monte Carlo method to the analysis of doses and shielding around an X-ray fluorescence equipment

2017 ◽  
Vol 153 ◽  
pp. 01008
Author(s):  
José Ródenas ◽  
Belén Juste ◽  
Sergio Gallardo ◽  
Andrea Querol
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
X Ray ◽  
The Monte Carlo Method

scholarly journals Analysis of geometric factors for an X-ray fluorescence analyzer designed via the Monte Carlo method

2016 ◽  
Vol 61 ◽  
pp. 01008
Author(s):  
Hefan Liu ◽  
Hong Tian ◽  
Laidong Zhou ◽  
Zihang Zhou ◽  
Fengxia Huang ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
X Ray ◽  
The Monte Carlo Method ◽  
Geometric Factors ◽  
Fluorescence Analyzer
Sign in / Sign up

Export Citation Format

Share Document