Results 51 to 60 of about 757 (155)

Xác định các thông số đầu vào cho mô phỏng chùm Photon 15 MV bằng phương pháp Monte Carlo, Khóa luận tốt nghiệp, Chuyên ngành Vật lý y khoa

open access: yes, 2022
83 tr.Nghiên cứu xác định các thông số đầu vào cho mô phỏng chùm Photon 15 MV thông qua việc mô phỏng chương trình EGSnrc (BEAMnrc và DOSXYZnrc) với phương pháp MC.
Lương, Thị Oanh, ThS. (Hướng dẫn)   +1 more
core   +1 more source

Dosimetry effects caused by unilateral and bilateral hip prostheses: A monte carlo case study in megavoltage photon radiotherapy for computed tomography data without metal artifacts

open access: yesJournal of Medical Physics, 2018
Background: Hip prostheses (HPs) are routinely used in hip augmentation to replace painful or dysfunctional hip joints. However, high-density and high-atomic-number (Z) inserts may cause dose perturbations in the target volume and interface regions. Aim:
Courage Mahuvava   +1 more
doaj   +1 more source

COMET-PE as an Alternative to Monte Carlo for Photon and Electron Transport

open access: yes, 2014
Monte Carlo methods are a central component of radiotherapy treatment planning, shielding design, detector modeling, and other applications. Long calculation times, however, can limit the usefulness of these purely stochastic methods.
Farzad Rahnema, Robert M. Hayward
core   +1 more source

Evaluation of the RtDosePlan Treatment Planning System using Radiochromic Film and Monte Carlo Simulation [PDF]

open access: yesIranian Journal of Medical Physics, 2010
Introduction: GafChromic EBT films are one of the self-developing and modern films commercially available for dosimetric verification of treatment planning systems (TPSs).
Micaeil Mollazadeh   +4 more
doaj   +1 more source

Implementación de un sistema Monte Carlo de alto rendimiento para un sistema de planificación de tratamiento

open access: yes, 2020
Tesis (Magíster en Física Médica)--Pontificia Universidad Católica de Chile, 2020matRad es un sistema de planificación de tratamiento de código abierto para planificación inversa (IMRT) para fotones e iones pesados.
Ramírez Solano, Oswaldo Daniel
core   +1 more source

Dose perturbations at tissue interfaces during parallel linac‐MR treatments: The “Lateral Scatter Electron Return Effect” (LS‐ERE)

open access: yesMedical Physics, Volume 51, Issue 11, Page 8506-8523, November 2024.
Abstract Background Magnetic resonance (MR) imaging devices have been integrated with medical linear accelerators (linac) in radiation therapy. Both perpendicular linac‐MR (LMR‐B⊥) and parallel (LMR‐B∥) systems exist, where due to the MR's magnetic field dose can be perturbed in the patient.
Stephen Steciw   +2 more
wiley   +1 more source

Analisis pengaruh Flattening Filter Free terhadap distribusi dosis menggunakan metode Monte Carlo [PDF]

open access: yes, 2021
Telah dilakukan penelitian tentang pengaruh flattening filter free terhadap distribusi dosis menggunakan metode monte carlo. Penelitian ini bertujuan untuk mengetahui perbedaan karakteristik berkas foton pada pesawat Linac dengan menggunakan flattening ...
Putri, Dinda Maulina
core   +1 more source

Estimation of Primary Electron Beam Parameters of Individual Linear Accelerator Using Monte Carlo Method

open access: yesZhongguo yiliao qixie zazhi
ObjectiveTo estimate the primary electron beam parameters (PEB), including energy, radial intensity distribution and average angular divergence, of the individual linear accelerator using the Monte Carlo method. MethodsA model of the treatment head and a
Yisong HE   +4 more
doaj   +1 more source

Monte Carlo Simulation of Electron Beams produced by LIAC Intraoperative Radiation Therapy Accelerator

open access: yesJournal of Biomedical Physics and Engineering, 2018
Background: One of the main problems of dedicated IORT accelerators is to determine dosimetric characteristics of the electron beams. Monte Carlo simulation of IORT accelerator head and produced beam will be useful to improve the accuracy of beam ...
Robatjazi M.   +7 more
doaj   +1 more source

Minimum phantom size for megavoltage photon beam reference dosimetry

open access: yesMedical Physics, Volume 51, Issue 8, Page 5663-5671, August 2024.
Abstract Background Water phantoms are required to perform reference dosimetry and beam quality measurements but there are no published studies about the size requirements for such phantoms. Purpose To investigate, using Monte Carlo techniques, the size requirements for water phantoms used in reference dosimetry and/or to measure the beam quality ...
D. W. O. Rogers
wiley   +1 more source

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