Zobrazeno 1 - 10
of 14
pro vyhledávání: '"George M. Daskalov"'
Autor:
George M. Daskalov, Ellen E. Wilcox
Publikováno v:
Medical Physics. 34:1967-1974
External beam therapy (EBT) GAFCHROMIC film is evaluated for dosimetry and characterization of the CyberKnife radiation beams. Percentage depth doses, lateral beam profiles, and output factors are measured in solid water using EBT GAFCHROMIC film (In
Publikováno v:
Medical Physics. 34:41-48
Intensity-modulated radiotherapy (IMRT) treatment plan verification is often done using Kodak EDR2 film and a Vidar Dosimetry PRO film digitizer. However, since many hospitals are moving towards a filmless environment, access to a film processor may
Publikováno v:
Medical Physics. 28:2154-2161
A new model 103 Pd interstitial brachytherapy source, the IsoSeed® 103 Pd , was recently introduced by Bebig Isotopentechnik und Umweltdiagnostik GmbH for permanent implant applications. This study presents the first quantitative theoretical study o
Publikováno v:
Nuclear Science and Engineering. 134:121-134
The DANTSYS discrete ordinates computer code system is applied to quantitative estimation of water kerma rate distributions in the vicinity of discrete photon sources with energies in the 20- to 80...
Stereotactic radiosurgery-radiotherapy: Should Monte Carlo treatment planning be used for all sites?
Publikováno v:
Practical radiation oncology. 1(4)
Purpose To evaluate a Monte Carlo (MC) treatment planning system for CyberKnife treatments of cranial and extracranial lesions and determine whether it is necessary for all treatment sites. Dose distributions are compared to those calculated with a r
Autor:
Ellen E, Wilcox, George M, Daskalov
Publikováno v:
Medical physics. 35(6)
For the small radiation field sizes used in stereotactic radiosurgery, lateral electronic disequilibrium and steep dose gradients exist in a large portion of these fields, requiring the use of high-resolution measurement techniques. These relatively
Autor:
George Pavlonnis, Bruce M. Kaplan, Richard Shumway, George M. Daskalov, Ellen E. Wilcox, Eric VanRooy
Publikováno v:
Medical dosimetry : official journal of the American Association of Medical Dosimetrists. 33(4)
Three independent dose verification methods for intensity modulated radiation therapy (IMRT) were evaluated. Planar IMRT dose distributions were delivered to EBT film and scanned with the Epson Expression 1680 flatbed scanner. The measured dose distr
Autor:
Ellen E, Wilcox, George M, Daskalov
Publikováno v:
Medical physics. 34(6)
External beam therapy (EBT) GAFCHROMIC film is evaluated for dosimetry and characterization of the CyberKnife radiation beams. Percentage depth doses, lateral beam profiles, and output factors are measured in solid water using EBT GAFCHROMIC film (In
Publikováno v:
Medical physics. 29(2)
Our purpose in this work is to demonstrate that the efficiency of dose-rate computations in 125I brachytherapy, using multigroup discrete ordinates radiation transport simulations, can be significantly enhanced using broad energy group cross sections
Publikováno v:
Medical physics. 27(10)
The DANTSYS multigroup discrete ordinates computer code is applied to quantitatively estimate the absorbed dose rate distributions in the vicinity of a microSelectron 192 Ir high-dose-rate (HDR) source in two-dimensional cylindrical R-Z geometry. The