Zobrazeno 1 - 10
of 104
pro vyhledávání: '"William E. Powers"'
Autor:
Isaiah A. Reeves, Rebecca S. Blue, Serena Auñon-Chancellor, Michael F. Harrison, Ronak Shah, William E. Powers
Publikováno v:
Aerospace Medicine and Human Performance. 94:470-474
INTRODUCTION: With increasing engagement of commercial spaceflight participants in spaceflight activities, the evaluation of individuals with medical conditions not previously characterized in the spaceflight environment is of particular interest. Fa
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 44:1-18
Purpose: Compare and contrast reports of random allocation clinical trials of local field radiation therapy of metastases to bone to determine the techniques producing the best results (frequency, magnitude, and duration of benefit), and relate these
The past twenty years have witnessed significant advances in the treatment of cancer by surgery and radiation therapy. Gains with cytotoxic chemotherapy have been much more modest. Of the approximately 900,000 newly diagnosed cases of cancer each yea
Autor:
Bruce E. Stabile, Tony Oh, Samuel W. French, Jorge Tolmos, Charles P. Theuer, Stanley R. Klein, William E. Powers, Tracey D. Arnell, Christian de Virgilio, Greg Keese
Publikováno v:
The American Journal of Surgery. 172:473-477
BACKGROUND : Gastric adenocarcinoma is considered a disease of the middle aged and elderly and has been infrequently reported in patients under 40 years of age. The purpose of this study was to determine the proportion of young patients diagnosed wit
Publikováno v:
Medical Physics. 21:779-785
The physical and clinical specifications of a neutron therapy facility utilizing a superconducting cyclotron are presented. The cyclotron and its support system are described. Details of the operation of the cyclotron in a hospital environment are gi
Autor:
Ihn Han, Vaneerat Ratanatharathorn, Jeri Grimm, Norma Steverson, Khurshid Ahmad, William E. Powers, Paul Lattin
Publikováno v:
Cancer Treatment Reviews. 18:261-276
The experience at the Gershenson Radiation Oncology Center of 32 cases of metastases to the eye or orbit from breast cancer are presented with a review of the literature. The 32 patients were referred for radiation therapy in the period of 1980-1991.
Publikováno v:
Radiology. 219(1)
The advancements in radiation oncology in the past 50 years in the United States were probably more dramatic than those in the first half of the 20th century. Not only were there major technical achievements, but there was also an associated increase
Autor:
P. Chauvel, Adel Courdi, M Octave-Prignot, R. Sabattier, A De Schrijver, Stefaan Vynckier, Lothar Böhm, J Onoda, N. Brassart, Arthur T. Porter, William E. Powers, Mark Yudelev, B M De Coster, Jakobus Slabbert, D. T. L. Jones, Vincent Grégoire, André Wambersie, S El-Akkad, N. Breteau, Richard L. Maughan, John Gueulette, Marc Beauduin, K Strijkmans
Publikováno v:
Bulletin du cancer. Radiotherapie : journal de la Societe francaise du cancer : organe de la societe francaise de radiotherapie oncologique.
In fast neutron therapy, the relative biological effectiveness (RBE) of a given beam varies to a large extent with the neutron energy spectrum. This spectrum depends primarily on the energy of the incident particles and on the nuclear reaction used f
Publikováno v:
Medical physics. 22(1)
A prototype multi-rod collimator for producing irregular fields in photon radiation therapy has been designed and built. The mechanical details of the design and operation of the multi-rod collimator are discussed. Beam profiles for an approximately
Autor:
Vaneerat Ratanatharathorn, Ihn Han, Norma Steverson, William E. Powers, Jeri Grimm, Khurshid Ahmad
Publikováno v:
Cancer. 73(9)
Background. This retrospective analysis examines the frequency, distribution, and the pattern of disease progression of bone metastasis in patients treated for cervical cancer and the use and results of palliative intent radiation therapy. Methods. C