Results 21 to 30 of about 11,936,984 (295)

The measurement of radiation doses in brachytherapy using an alanine dosimeter

Journal of Associated Medical Sciences, 2023
Background: Brachytherapy involves the use of high radiation doses to treat cancer patients, making it essential to have appropriate dosimeter properties to confirm the accuracy and precision of the dose delivered to the patient.
Kanyarat Chaluaysang, Nutchanon Pongsuwan, Panatsada Awikunprasert, Sumalee Ninlapruk, Vithit Pungkun   +4 more
doaj   +1 more source

Rat mammary carcinogenesis following neutron- or X-radiation [PDF]

, 1974
Female 61 to 63 - day - old Sprague-Dawley rats were exposed once to a single dose of either 0.43 - MeV neutrons or 250 - kVX - rays . For neutrons 23 rats were exposed in plastic tubes rotated around and 31 c m from a water-cooled tritium impregnated ...
Rossi, H. H., Mills, R. E., Kellerer, Albrecht M., Goodman, L. J., Rao, A. R., Bond, V. P., Brown, R. D., Shellabarger, C. J., Shanley, J. P.   +8 more
core   +1 more source

Comparison of X-ray and gamma-ray dose-response curves for pink somatic mutations in Tradescantia clone 02 [PDF]

, 1976
Microdosimetric data indicate that the mean specific energy,zeta, produced by individual charged particles from X rays and gamma rays is different for the two radiation qualities by nearly a factor of two.
Mills, R. E., Kellerer, Albrecht M., Sparrow, A. H., Underbring, A. G.   +3 more
core   +1 more source

A unified dose response relationship to predict high dose fractionation response in the lung cancer stereotactic body radiation therapy

Journal of Medical Physics, 2017
Aim: This study is designed to investigate the superiority and applicability of the model among the linear-quadratic (LQ), linear-quadratic-linear (LQ-L) and universal-survival-curve (USC) models by fitting published radiation cell survival data of lung ...
Than S Kehwar, Kashmiri L Chopra, Durg V Rai   +2 more
doaj   +1 more source

"Adaptive response" - some underlying mechanisms and open questions [PDF]

, 2008
Organisms are affected by different DNA damaging agents naturally present in the environment or released as a result of human activity. Many defense mechanisms have evolved in organisms to minimize genotoxic damage. One of them is induced radioresistance
Stephka G. Chankova, Dimova, Evgeniya G, Chankova, Stephka G, Peter E. Bryant, Bryant, Peter Edward, Evgeniya G. Dimova   +5 more
core   +1 more source

Is There a Dose-Response Relationship for Heart Disease With Low-Dose Radiation Therapy? [PDF]

International Journal of Radiation Oncology*Biology*Physics, 2013
To quantify cardiac radiation therapy (RT) exposure using sensitive measures of cardiac dysfunction; and to correlate dysfunction with heart doses, in the setting of adjuvant RT for left-sided breast cancer.On a randomized trial, 32 women with node-positive left-sided breast cancer underwent pre-RT stress single photon emission computed tomography ...
Eugene, Chung, James R, Corbett, Jean M, Moran, Kent A, Griffith, Robin B, Marsh, Mary, Feng, Reshma, Jagsi, Marc L, Kessler, Edward C, Ficaro, Lori J, Pierce   +9 more
openaire   +2 more sources

Dose rate and energy dependency of an electronic personal dosemeter

Saúde & Tecnologia, 2015
Introduction – The measurement of occupational exposure to radiation doses can be completed with an electronic personal dosemeter that allows a direct reading and alarm function of the received radiation dose.
Diana D. Duarte, João Cardoso, Luís Santos, Carlos Oliveira, Lina Vieira   +4 more
doaj   +1 more source

Lymphocyte Depletion Rate as a Biomarker of Radiation Dose to Circulating Lymphocytes During Fractionated Partial-Body Radiation Therapy [PDF]

, 2022
PURPOSE: Radiation causes exponential depletion of circulating lymphocyte populations; in turn, radiation-induced lymphopenia is associated with worse survival for many solid tumors, possibly owing to attenuated antitumor immune responses.
Mohan, Radhe, Ellsworth, Susannah G., Yalamanchali, Anirudh, Lin, Steven H., Grossman, Stuart A, Lautenschlaeger, Tim, Lin, Steven H, Ellsworth, Susannah G, Grossman, Stuart A., Grassberger, Clemens   +9 more
core   +1 more source

Evaluating Dose-response of Cataract Induction in Radiotherapy of Head and Neck Cancers Patients [PDF]

Journal of Biomedical Physics and Engineering, 2021
Background: Head and neck cancers are currently the most common types of cancers. 3D-conformal radiation therapy is the most common dose delivery technique for head and neck cancers.
A M Arefpour, M Bahrami, A Haghparast, K Khoshgard, H Aryaei Tabar, N Farshchian   +5 more
doaj   +1 more source

Dose calculations for [¹³¹I] meta-iodobenzylguanidine-induced bystander effects

, 2014
Targeted radiotherapy is a potentially useful treatment for some cancers and may be potentiated by bystander effects. However, without estimation of absorbed dose, it is difficult to compare the effects with conventional external radiation treatment ...
R. J. Mairs, Seymour, C B, M. D. Gow, Mairs, R J, C. B. Seymour, Gow, M.D., Mothersill, C.E., Seymour, C.B., C. E. Mothersill, Mairs, R.J., M. Boyd, W. V. Prestiwch, Mothersill, C E, Prestiwch, W V, Prestiwch, W.V., Boyd, Marie, Boyd, M., Gow, M D   +17 more
core   +1 more source