Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Allen G. Meek"'
Autor:
Giovanna R. Fois, Nicolle R. Desnoyers, John A. Olschowka, Ruiliang Wang, Allen G. Meek, Adam Rusek, Dardo Tomasi, I. Dioszegi, Hedok Lee, F. Avraham Dilmanian, Bari Dane, Jane Y. Park, Patricia K. Coyle, Sean D. Hurley, M. Kerry O'Banion
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 84:514-519
Purpose To evaluate the efficacy of "interleaved carbon minibeams" for ablating a 6.5-mm target in a rabbit brain with little damage to the surrounding brain. The method is based on the well-established tissue-sparing effect of arrays of thin planes
Publikováno v:
Journal of Applied Clinical Medical Physics
We have formulated a unified dosimetry index (UDI) that computes, for any given treatment plan, its deviations in terms of dose coverage, conformity, homogeneity, and dose gradient vis-à-vis an ideal plan (which we define as a dosimetry plan of perf
Autor:
Allen G. Meek
Publikováno v:
Cancer. 83:2788-2797
BACKGROUND. Breast radiotherapy has a low incidence of long term complications. Lymphedema is the most commonly reported complication and adversely affects the quality of life of the breast carcinoma patient. Although its incidence is decreasing, lym
Publikováno v:
Physics in Medicine and Biology. 43:2703-2708
Various forms of GAFChromic film have been used for several years as radiographic media for measuring dose distributions of brachytherapy sources and small radiation fields. Upon irradiation the film changes colour and darkens with time post-irradiat
Publikováno v:
Physics in Medicine and Biology. 41:1045-1058
A new image registration algorithm based on phase-only correlation is applied to portal images in radiation therapy to detect translational shift. The phase-only correlation shows a sharp peak in the correlation distribution as compared to the broad
Autor:
F. Avraham Dilmanian, Arthur L. Jenkins, Saffa Ahmad, Catherine R. Messina, Allen G. Meek, LeeAnn Trojanczyk, Stanislaw Sobotka, Nicolle R. Desnoyers, Patricia K. Coyle, Marjorie Morales, John A. Olschowka, Sean D. Hurley, Neda Shahrabi, Giovanna R. Fois, Zhong Zhong, Jane Y. Park, M. Kerry O'Banion
Publikováno v:
Radiation research. 179(1)
Spinal cord injury is a devastating condition with no effective treatment. The physiological processes that impede recovery include potentially detrimental immune responses and the production of reactive astrocytes. Previous work suggested that radia
Publikováno v:
Medical Dosimetry. 20:195-200
The most commonly used technique for matching two adjoining parallel opposed fields has been geometric matching with a skin gap calculation. Many modifications have been suggested in order to minimize the shortcomings of this technique. Most of these
Publikováno v:
Medical Physics. 18:1247-1250
The depth dose for electrons is sensitive to energy and the AAPM Task Group 24 has recommended that tests be performed at monthly intervals to assure electron beam energy constancy by verifying the depth for the 80% dose to within {plus minus}3 mm. T
Autor:
Ronald Beaton, Stephanie Fertman, Afif Iliya, Mehender Pampati, Raphael P. Davis, Naveed Chowhan, Orlando Alvarez, Allen G. Meek, Stefan Madajewicz, Clemente Roque, George W. Tyson
Publikováno v:
Cancer. 67:2844-2849
Chemotherapy for tumors of the central nervous system has a limited efficacy presumably because of restricted blood-brain barrier permeability. The advantage of regional intra-arterial administration of anticancer drugs is an increased uptake during
Publikováno v:
Medical Dosimetry. 16:23-29
The Library Least-Squares method has been applied to detect changes in the depth dose and in the profiles of 6 and 20 MeV electron beams, and in 6 MeV photon beams from medical linear accelerators. The changes in the beam energy of 0.78% and 0.32% at