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An end-to-end examination of geometric accuracy of IGRT using a new digital accelerator equipped with onboard imaging system

Autor: Lei Wang, A Hsu, Sonja Dieterich, Ed Mok, K Kielar, Lei Xing

Publikováno v: Physics in Medicine and Biology. 57:757-769

The Varian's new digital linear accelerator (LINAC), TrueBeam STx, is equipped with a high dose rate flattening filter free (FFF) mode (6 MV and 10 MV), a high definition multileaf collimator (2.5 mm leaf width), as well as onboard imaging capabiliti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37e1eeaa32369cc3d0d873f285b2e599
https://doi.org/10.1088/0031-9155/57/3/757

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Development of a fast and feasible spectrum modeling technique for flattening filter free beams

Autor: Woong, Cho, Karl, Bush, Ed, Mok, Lei, Xing, Tae-Suk, Suh

Publikováno v: Medical physics. 40(4)

To develop a fast and robust technique for the determination of optimized photon spectra for flattening filter free (FFF) beams to be applied in convolution/superposition dose calculations.A two-step optimization method was developed to derive optima

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::72c60d4d96fcbabe12d51e9f1bf250bd
https://pubmed.ncbi.nlm.nih.gov/23556891

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Verification of dosimetric accuracy on the TrueBeam STx: rounded leaf effect of the high definition MLC

Autor: Kayla N, Kielar, Ed, Mok, Annie, Hsu, Lei, Wang, Gary, Luxton

Publikováno v: Medical physics. 39(10)

The dosimetric leaf gap (DLG) in the Varian Eclipse treatment planning system is determined during commissioning and is used to model the effect of the rounded leaf-end of the multileaf collimator (MLC). This parameter attempts to model the physical

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::f6e228850182851f0ab584c3140ce69f
https://pubmed.ncbi.nlm.nih.gov/23039672

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Dosimetric analysis of organs at risk during expiratory gating in stereotactic body radiation therapy for pancreatic cancer

Autor: Daniel T. Chang, Lei Xing, James D. Murphy, Neville Eclov, K Kielar, Cullen M. Taniguchi, Todd F. Atwood, Claudia Christman-Skieller, Ed Mok, Albert C. Koong

Publikováno v: International journal of radiation oncology, biology, physics. 85(4)

Purpose To determine how the respiratory phase impacts dose to normal organs during stereotactic body radiation therapy (SBRT) for pancreatic cancer. Methods and Materials Eighteen consecutive patients with locally advanced, unresectable pancreatic a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f720144cd972a8b044866a7574f8bb7
https://pubmed.ncbi.nlm.nih.gov/23273994

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Development of a Beam Source Modeling Technique for a Flattening Filter Free (FFF) Beam

Autor: Woong Cho, Jeong-Hoon Park, K Kielar, Tae-Suk Suh, Ruijiang Li, Lei Xing, Ed Mok, W Jung

Publikováno v: ICMLA (2)

This study was focused on a new beam source modeling technique for a flattening filter free (FFF) beam. The model was based on a previous three source model, and improved by introducing off axis ratio (OAR) of photon fluence to the primary and scatte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4239e3e5445fca47e393d1d9eee3105
https://doi.org/10.1109/icmla.2011.54

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Multisource modeling of flattening filter free (FFF) beam and the optimization of model parameters

Autor: K Kielar, Jeong-Hoon Park, W Jung, Ed Mok, Tae-Suk Suh, Woong Cho, Lei Xing

Publikováno v: Medical physics. 38(4)

Purpose: With the introduction of flattening filter free (FFF) linear accelerators to radiation oncology, new analytical source models for a FFF beam applicable to current treatment planning systems is needed. In this work, a multisource model for th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dc44c483809f1ddfdc5c7a8d55d0e45
https://pubmed.ncbi.nlm.nih.gov/21626926

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Monte Carlo calculations of electron beam output factors for a medical linear accelerator

Autor: Ajay Kapur, Ed Mok, C.M. Ma, Arthur L. Boyer, David O. Findley

Publikováno v: Physics in medicine and biology. 43(12)

The purpose of this study was to investigate the application of the Monte Carlo technique to the calculation and analysis of output factors for electron beams used in radiotherapy. The code EGS4/BEAM was used to obtain phase-space files for 6, 12 and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc4b2fe00e4d5787721170d5006bd97e
https://pubmed.ncbi.nlm.nih.gov/9869026

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Development of a fast and feasible spectrum modeling technique for flattening filter free beams

Autor: Ed Mok, Woong Cho, Lei Xing, Tae-Suk Suh, Karl Bush

Publikováno v: Medical Physics. 40:041721

Purpose: To develop a fast and robust technique for the determination of optimized photon spectra for flattening filter free (FFF) beams to be applied in convolution/superposition dose calculations. Methods: A two-step optimization method was develop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::096575e9b223fc018df4764e819fa87d
https://doi.org/10.1118/1.4797469

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