Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Dennis M, Duggan"'
Publikováno v:
Physics in Medicine and Biology. 53:3493-3499
This study presents a theoretical approach to the dosimetry for small and non-equilibrium radiation fields. We applied the newly developed VMCBC© algorithm to the dosimetry for megavoltage photon beams using Monte Carlo techniques. The approach assu
Publikováno v:
Medical Physics. 35:1135-1144
The increased utilization of x-ray imaging in image-guided radiotherapy has dramatically improved the radiation treatment and the lives of cancer patients. Daily imaging procedures, such as cone-beam computed tomography (CBCT), for patient setup may
Autor:
Dennis E. Hallahan, Dennis M. Duggan, Charles W. Coffey, Matthew A. Deeley, Arnold W. Malcolm, Anthony J. Cmelak, George X. Ding
Publikováno v:
Radiotherapy and Oncology. 85:116-125
Background and purpose Changes in tumor size during the course of radiotherapy warrant performing adaptive radiotherapy (ART). This work investigates the feasibility and usefulness of acquiring on-board cone-beam CT (CBCT) for ART for patients with b
Autor:
Wyndee Kirby, Bo Lu, Arnold W. Malcolm, Dennis M. Duggan, George X. Ding, Dennis E. Hallahan, Charles W. Coffey
Publikováno v:
Lung Cancer. 56:77-88
We report our initial experience with deep-inspiration breath-hold (DIBH) cone-beam CT (CBCT) on the treatment table, using the kilovoltage imager integrated into our linear accelerator, for setting up patients for DIBH stereotactic body radiation th
Publikováno v:
Physics in Medicine and Biology. 52:1595-1615
The purpose of this investigation is to characterize the beams produced by a kilovoltage (kV) imager integrated into a linear accelerator (Varian on-board imager integrated into the Trilogy accelerator) for acquiring high resolution volumetric cone-b
Publikováno v:
Medical Physics. 34:103-111
The BaFBrI:Eu2+ storage phosphor plate (SPP) is a reusable radiation image detector, widely used in diagnostic computed radiography, x-ray crystallography and radioactive tracer studies. When exposed to ionizing radiation, the SPP stores a latent ima
Publikováno v:
Physics in Medicine and Biology. 51:2549-2566
The purpose of this investigation is to study the feasibility of using an alternative method to commission stereotactic radiosurgery beams shaped by micro multi-leaf collimators by using Monte Carlo simulations to obtain beam characteristics of small
Autor:
Dennis M. Duggan
Publikováno v:
Applied Radiation and Isotopes. 61:1443-1450
Improved cross-sections in a new version of the Monte-Carlo N-particle (MCNP) code may eliminate discrepancies between radial dose functions (as defined by American Association of Physicists in Medicine Task Group 43) derived from Monte-Carlo simulat
Publikováno v:
Applied Radiation and Isotopes. 57:875-882
Imaging plates (IPs) are a reusable media, which when exposed to ionizing radiation, store a latent image that can be read out with a red laser as photostimulated luminescence (PSL). They are widely used as a substitute for X-ray films for diagnostic
Autor:
Dennis M. Duggan, Jessica K. Schefter, George S. Allen, Steven A. Toms, Mahlon D. Johnson, Anthony J. Cmelak, Lewis S. Blevins
Publikováno v:
Journal of Neuro-Oncology. 56:69-78
Background. The management of craniopharyngiomas has historically been controversial in terms of the extent of initial surgical resection and the use of additional treatments. Various options include radical excision versus a more conservative surgic