Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Edward Mok"'
Publikováno v:
Medical physics. 39(6Part18)
Purpose: The AcurosXB Advanced Dose algorithm (Varian Medical Systems) was reported to give more accurate dose calculation in heterogeneous medium compared with the AAA algorithm. In this work, a validation of AcurosXB dose calculation accuracy is pe
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 84:700-706
To identify dosimetric parameters that correlate with acute hematologic toxicity (HT) in patients with squamous cell carcinoma of the anal canal treated with definitive chemoradiotherapy (CRT).We analyzed 33 patients receiving CRT. Pelvic bone (PBM)
Publikováno v:
Medical Physics. 39:2686-2693
Purpose: To evaluate the geometric accuracy of beam targeting in external surrogate-based gated volumetric modulated arc therapy (VMAT) using kilovoltage (kV) x-ray images acquired during dose delivery. Methods: Gated VMAT treatments were delivered u
Autor:
Megan E. Daly, Claudia Christman-Skieller, James D. Murphy, Daniel T. Chang, Edward Mok, Albert C. Koong
Publikováno v:
Practical Radiation Oncology. 1:85-94
Purpose To evaluate rectal motion and estimate an appropriate target volume for preoperative radiotherapy (RT) for rectal cancer. Methods Between January 2006 and December 2009, 17 rectal cancer patients undergoing preoperative RT underwent 39 cone-b
Publikováno v:
Physics in Medicine and Biology. 55:3597-3610
Volumetric modulated arc therapy (VMAT) has recently emerged as a new clinical modality for conformal radiation therapy. The aim of this work is to establish a methodology and procedure for retrospectively reconstructing the actual dose delivered in
Publikováno v:
Physics in Medicine and Biology. 45:2969-2985
A new EGS4/PRESTA Monte Carlo user code, MCDOSE, has been developed as a routine dose calculation tool for radiotherapy treatment planning. It is suitable for both conventional and intensity modulated radiation therapy. Two important features of MCDO
Autor:
C.-M. Ma, J. S. Li, Byong Yong Yi, Todd Pawlicki, Arthur L. Boyer, Edward Mok, M. C. Lee, Jun Deng, Steve B. Jiang
Publikováno v:
Physics in Medicine and Biology. 45:2293-2311
This work investigates the feasibility of optimizing energy- and intensity-modulated electron beams for radiation therapy. A multileaf collimator (MLC) specially designed for modulated electron radiotherapy (MERT) was investigated both experimentally
Autor:
Todd Pawlicki, S. Brain, K. Forster, Arthur L. Boyer, D. Findley, C.-M. Ma, Ajay Kapur, Edward Mok
Publikováno v:
Medical Physics. 26:2133-2143
The purpose of this study was to implement the Monte Carlo method for clinical radiotherapy dose calculations. We used the EGS4/BEAM code to obtain the phase-space data for 6-20 MeV electron beams and 4, 6, and 15 MV photon beams for Varian Clinac 18
Publikováno v:
Medical physics. 40(3)
Real-time tracking of implanted fiducials in cine megavoltage (MV) imaging during volumetric modulated arc therapy (VMAT) delivery is complicated due to the inherent low contrast of MV images and potential blockage of dynamic leaves configurations. T
Publikováno v:
Medical Dosimetry. 20:287-293
The incidence of secondary cancers in the contralateral breast after primary breast irradiation is several times higher than the incidence of first time breast cancer. Studies have shown that the scatter radiation to the contralateral breast may play