Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Michael D. Weil"'
Autor:
Michael J. Plies, Tyler Stalbaum, Vitaliy Ziskin, Hong Chen, Joon Kim, Roy E. Rand, Jae Y. Han, Samuel Song, Magdalena Bazalova-Carter, Douglas P. Boyd, Michael D. Weil, Larry Partain
Publikováno v:
Med Phys
PURPOSE: The objective of this work was to evaluate phantom dosimetry of a novel kilovoltage (kV) x-ray source, which employs a stationary tungsten anode and a linearly swept scanning electron-beam. The source utilizes converging x-ray collimation al
Publikováno v:
Physica Medica. 79:103-112
Kilovoltage (kV) x-rays are most commonly used for diagnostic imaging due to their sensitivity to tissue composition. In radiation therapy (RT), due to their fast attenuation, kV x-rays are typically only used for superficial irradiation of skin canc
Autor:
John M. Boone, Michael J. Plies, Michael D. Weil, Hong Chen, Tyler Stalbaum, Megan E. Daly, Samuel Song, Vitaliy Ziskin, Magdalena Bazalova-Carter, Douglas P. Boyd, Larry Partain
Publikováno v:
Medical Imaging 2020: Physics of Medical Imaging.
The system presented herein consists of a custom 200 kV electron tube with deflection magnets and stationary water-cooled targets for radiotherapy (RT) and imaging. The electron beam is deflected and dwelled along 41 discrete anode locations equally
Autor:
Magdalena Bazalova-Carter, Dylan Y. Breitkreutz, Marc-André Renaud, Sergei Zavgorodni, Michael D. Weil, Jan Seuntjens
Publikováno v:
Medical Physics. 45:5161-5171
Purpose The objective of this work was to investigate the benefits of using inverse optimization treatment planning for kilovoltage arc therapy (KVAT) and to assess the dosimetric limitations of KVAT. Methods Monte Carlo (MC) calculated, inversely op
Publikováno v:
Medical Physics. 44:6548-6559
Purpose To determine the most suitable lesion size and depth for radiotherapy treatments with a prototype kilovoltage x-ray arc therapy (KVAT) system through Monte Carlo simulations of the dose delivered to lesion, dose homogeneity and lesion-to-skin
Autor:
Brian P. Wilfley, Edward E. Graves, Dylan Y. Breitkreutz, Michael D. Weil, Magdalena Bazalova-Carter
Publikováno v:
Medical physics, vol 44, iss 2
Purpose Radiation therapy to deep-seated targets is typically delivered with megavoltage x-ray beams generated by medical linear accelerators or 60Co sources. Here, we used computer simulations to design and optimize a lower energy kilovoltage x-ray
Autor:
Michael D. Weil, Sergei Zavgorodni, Samuel Song, Magdalena Bazalova-Carter, Jaeyoung Han, Dylan Y. Breitkreutz, Marc-André Renaud, Henry Baxter, Douglas P. Boyd, Jan Seuntjens
Publikováno v:
Biomedical physicsengineering express. 5(6)
Purpose: The intent of this work was to evaluate the ability of our 200 kV kilovoltage arc therapy (KVAT) system to treat realistic lung tumors without exceeding dose constraints to organs-at-risk (OAR). Methods and Materials: Monte Carlo (MC) method
Autor:
Namho Kim, L. Partain, Douglas P. Boyd, Austin Ely, Stanley H Benedict, H Pham, Roy E. Rand, Michael D. Weil, Vitaliy Ziskin, Megan E. Daly, Samuel Song, Edward Shapiro, Kyle Foletta, Edward J. Seppi, Gary Okamoto, Stavros D. Prionas, John M. Boone, Gikas S. Mageras, Carlo Tognina
Publikováno v:
Medical Imaging 2018: Physics of Medical Imaging.
The combinations of a 60 fps kV x-ray flat panel imager, a 19 focal spot kV x-ray tube enabled by a steered electron beam, plus SART or SIRT sliding reconstruction via GPUs, allow real time 6 fps 3D-rendered digital tomosynthesis tracking of the resp
Publikováno v:
Physics in Medicine and Biology. 57:7381-7394
The scanning-beam digital x-ray (SBDX) system has been developed for fluoroscopic imaging using an inverse x-ray imaging geometry. The SBDX system consists of a large-area x-ray source with a multihole collimator and a small detector. The goal of thi
Autor:
Michael D. Weil
Publikováno v:
Current Neurology and Neuroscience Reports. 2:205-209
The therapy for medulloblastoma/primitive neuroectodermal tumors of the central nervous system is surgery, followed by combination chemo-radiotherapy [1]. The radiation field is the entire craniospinal axis, which is only avoided when treating infant