Results 51 to 60 of about 4,632 (208)

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

Computation of the electron beam quality $k_{{\rm Q,Q}_0}$ factors for the NE2571, NE2571A and NE2581A thimble ionization chambers using PENELOPE

, 2017
The quality correction factor $k_{Q,Q_{0}}$ for electron beams was calculated for three thimble ionization chambers, namely, NE2571, NE2571A and NE2581A.
Brualla, L., Erazo, F., Lallena, A. M.
core   +1 more source

Determination of dosimetric dependence for effective atomic number of LDR brachytherapy seed capsule by Monte Carlo simulation

Nuclear Engineering and Technology, 2023
Brachytherapy is a special case of radiotherapy. It should be arranged according to some principles in medical radiation applications and radiation physics.
Berkay Camgöz, Dilara Tarım
doaj   +1 more source

Simulations of a Scintillator Compton Gamma Imager for Safety and Security

, 2009
We are designing an all-scintillator Compton gamma imager for use in security investigations and remediation actions involving radioactive threat material.
Hanna, D. S., MacLeod, A. M. L., Saull, P. R. B., Sinclair, L. E.   +3 more
core   +1 more source

Use of the GATE Monte Carlo package for dosimetry applications [PDF]

, 2005
6 pages, 3 figures - submitted to NIM A, presented by D. VisvikisInternational audienceOne of the roles for MC simulation studies is in the area of dosimetry.
Bardies, M., Chiavassa, S., Danford, C., Kirov, A., Lamare, F., Maigne, L., Staelens, S., Taschereau, R., Visvikis, D.   +8 more
core   +4 more sources

Monte Carlo simulation of 6‐MV dynamic wave VMAT deliveries by Vero4DRT linear accelerator using EGSnrc moving sources

Journal of Applied Clinical Medical Physics, 2020
The commissioning and benchmark of a Monte Carlo (MC) model of the 6‐MV Brainlab‐Mitsubishi Vero4DRT linear accelerator for the purpose of quality assurance of clinical dynamic wave arc (DWA) treatment plans is reported. Open‐source MC applications based
M. Rostamzadeh, Y. Ishihara, M. Nakamura, Antoniu, V Popescu, A. Mestrovic, E. Gete, R. Fedrigo, A. Bergman   +8 more
semanticscholar   +1 more source

Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation

, 2011
Recently, X-ray imaging dose from computed tomography (CT) or cone beam CT (CBCT) scans has become a serious concern. Patient-specific imaging dose calculation has been proposed for the purpose of dose management.
Briesmeister J F, DeMarco J J, DeMarco J J, Gu X, Gu X, Gu X J, Gu X J, Hao Yan, Hirayama H, Jacques R, Jarry G, Jia X, Jia X, L’Ecuyer P, Marsaglia G, Men C, Men C H, NVIDIA, NVIDIA, Salvat F, Steve B Jiang, Woodcock E, Xuejun Gu, Xun Jia   +23 more
core   +1 more source

Dosimetry characterization of $^{32}$P intravascular brachytherapy source wires using Monte Carlo codes PENELOPE and GEANT4

, 2003
Monte Carlo calculations using the codes PENELOPE and GEANT4 have been performed to characterize the dosimetric parameters of the new 20 mm long catheter based $^{32}$P beta source manufactured by Guidant Corporation.
Agostinelli, Antonio M. Lallena, Asenjo, Bohm, Fox, Garcı́a-Toraño, Javier Torres, Julio F. Almansa, Li, Manuel J. Buades, Mourtada, Mourtada, Nath, Pocock, Pötter, Rafael Guerrero, Schaart, Sehgal, Sánchez-Reyes, Vynckier, Waksman, Wang   +21 more
core   +1 more source

PENELOPE/PRIMO-calculated photon and electron spectra from clinical accelerators [PDF]

, 2019
Background: The availability of photon and electron spectra in digital form from current accelerators and Monte Carlo (MC) systems is scarce, and one of the packages widely used refers to linacs with a reduced clinical use nowadays.
Andreo, Pedro, Brualla, Lorenzo, Rodríguez, Miguel, Sempau Roma, Josep   +3 more
core   +2 more sources

Soft tissue and water substitutes for megavoltage photon beams: An EGSnrc‐based evaluation [PDF]

Journal of Applied Clinical Medical Physics, 2016
In this work, soft‐tissue equivalence of water, polystyrene, PMMA and water equivalence of polystyrene, and PMMA has been assessed for multiple megavoltage photon beams and field sizes. EGSnrc based Monte Carlo (MC) codes, BEAMnrc and DOSXYZnrc are used for the linac head modeling and the phantom dose calculations, respectively. Percentage depth doses (
Aslam, Ambreen, Kakakhel, Muhammad Basim, Shahid, Shaukat Ali, Younas, Lubna, Zareen, Sobia   +4 more
openaire   +2 more sources