Results 41 to 50 of about 757 (155)

Simulasi teknik penyinaran Intensity Modulated Radiation Therapy (IMRT) sliding window menggunakan metode Monte Carlo EGSnrc [PDF]

, 2020
IMRT sliding window merupakan teknik penyinaran radioterapi yang menggunakan banyak lapangan radiasi dengan intensitas yang tidak seragam, dimana MLC bergerak kontinu selama proses penyinaran radiasi berlangsung. Penelitian ini bertujuan untuk memperoleh
Aulia, Zulfa Fatwa
core   +1 more source

Evaluating the Effects of Field Size on Beam Homogeneity Coefficient in the Superficial Radiotherapy Machine Using Empirical Method and Simulation [PDF]

Iranian Journal of Medical Physics, 2012
Introduction Superficial X-ray therapy is one of the most important treatment methods in radiotherapy especially in the treatment of superficial skin lesions (Up to 300 kVp).
Hamed Babapour, Tayyeb Allahverdi Pourfallah, Ali Shabestani Monfared, Ali-Reza Shirazi   +3 more
doaj   +1 more source

Investigating the dosimetric characteristics of microbeam radiation treatment

Journal of Medical Signals and Sensors, 2021
Background: High-radiation therapeutic gain could be achieved by the modern technique of microbeam radiation treatment (MRT). The aim of this study was to investigate the dosimetric properties of MRT.
Mansour Zabihzadeh, Atefeh Rabiei, Hojattollah Shahbazian, Sasan Razmjoo   +3 more
doaj   +1 more source

Design and Implementation of a Monte Carlo Framework for Assessment of Spoiler Applications in Abutting Electron Fields [PDF]

Journal of Biomedical Physics and Engineering, 2020
Background: Field matching problems in abutting electron fields can be managed by using spoilers.Objective: The aim of this study was to design a Monte Carlo framework for the assessment of spoiler application in abutting electron fields.Material and ...
F Felfeliyan, M Atarod, A Amouheidari, S Noshadi, P Shokrani   +4 more
doaj   +1 more source

Technical note: Impact of dose voxel kernel (DVK) values on dosimetry estimates in ¹⁷⁷ Lu and ⁹⁰ Y radiopharmaceutical therapy (RPT) applications. [PDF]

Med Phys
Abstract Background Radiopharmaceutical therapy (RPT) is an increasingly adopted modality for treating cancer. There is evidence that the optimization of the treatment based on dosimetry can improve outcomes. However, standardization of the clinical dosimetry workflow still represents a major effort. Among the many sources of variability, the impact of
Danieli R, Pistone D, Tranel J, Botta F, Uribe-Munoz C, Raspanti D, Salvat F, Wilderman SJ, Bardiès M, Amato E, Dewaraja YK, Cremonesi M.   +11 more
europepmc   +2 more sources

Characterization of Wedge Factors and Dose Distributions in Radiotherapy with Symmetric and Asymmetric Physical Wedged Beams of 6 MV Photon Beam [PDF]

Iranian Journal of Medical Physics, 2020
Introduction: Physical wedge by modify photon beam shape and intensity has been utilized in radiotherapy to obtain uniformly dose distribution in tumor site with reduced hot spots.
mansour zabihzadeh, Mahbube Fadaei, Seyed Mohammad Hoseini, Sholeh Arvandi, Mohamad Tahmasebi, Mojtaba Hoseini-Ghahfarokhi   +5 more
doaj   +1 more source

Evaluation of electron Monte Carlo algorithm accuracy for dose calculations in extended source‐to‐surface distances electron beam therapy

Journal of Applied Clinical Medical Physics, Volume 26, Issue 9, September 2025.
Abstract Background Extending the source‐to‐surface distance (SSD) is an effective approach to cover a large irradiation area in electron beam therapy for large planning target volumes (PTVs). However, the accuracy of dose calculations at extended SSDs has not been fully validated.
Naohito Ono, Makoto Omiya, Manami Sugiyama, Masaki Oshima   +3 more
wiley   +1 more source

EGSnrc/BEAMnrc-Based Monte Carlo Simulation of the Gamma Knife 4C versus MCNP Code in Homogeneous Media

Frontiers in Biomedical Technologies, 2020
Purpose: Gamma Knife is applied as a superseded tool for inaccessible lesions surgery delivering a single high dose to a well-defined target through 201 small beams. Monte Carlo simulations can be an appropriate supplementary tool to determine dosimetric
Atefeh Mahmoudi, Ghazale Geraily
doaj   +1 more source

Comparison of measured and Monte Carlo calculated dose distributions from indigenously developed 6 MV flattening filter free medical linear accelerator

Journal of Medical Physics, 2018
Purpose: Monte Carlo simulation was carried out for a 6 MV flattening filter-free (FFF) indigenously developed linear accelerator (linac) using the BEAMnrc user-code of the EGSnrc code system. The model was benchmarked against the measurements.
Bibekananda Mishra, Subhalaxmi Mishra, T Palani Selvam, S T Chavan, S N Pethe   +4 more
doaj   +1 more source

Validação de um modelo computacional de acelerador linear VARIAN CLINAC 2100 utilizando o código EGSnrc para utilização em dosimetria de pequenos campos.

Brazilian Journal of Radiation Sciences, 2018
Neste trabalho foi empregado o Método de Monte Carlo para a simulação de campos clínicos de radioterapia que serão posteriormente utilizados para a calibração de pequenos campos de radiocirurgia. O código de transporte de radiação utilizado foi o EGSnrc
Reginaldo Gonçalves Leão Jr, Rômulo Verdolin Sousa, Arno Heeren Oliveira, Hugo Lemos Leonardo Silva, Arnaldo Prata Mourão   +4 more
doaj   +1 more source