Results 31 to 40 of about 1,908,615 (320)

Proton-counting radiography for proton therapy: a proof of principle using CMOS APS technology [PDF]

, 2014
Despite the early recognition of the potential of proton imaging to assist proton therapy (Cormack 1963 J. Appl. Phys. 34 2722), the modality is still removed from clinical practice, with various approaches in development. For proton-counting radiography
D J Parker, Esposito M, Evans P M, Ferrari A, G Poludniowski, Goethals P-E, J Nieto-Camero, Leroy C, M Esposito, N M Allinson, P M Evans, Paganetti H, Rinaldi I, S Green, S Manolopoulos, T Anaxagoras, T Price, Vlachoudis V, Yang M, Yohannes I   +19 more
core   +1 more source

In vivo neutron dosimetry during high-energy Bremsstrahlung radiotherapy

International Journal of Radiation Oncology*Biology*Physics, 1998
A new technique is presented for in vivo measurements of the dose equivalent from photoneutrons produced by high-energy radiotherapy accelerators.The dosimeters used for this purpose are vials of superheated halocarbon droplets suspended in a tissue-equivalent gel.
F, D'Errico, R, Nath, G, Silvano, L, Tana   +3 more
openaire   +2 more sources

His+ reversions Caused in Salmonella typhimurium by different types of ionizing radiation [PDF]

, 1988
The yield of his+ reversions in the Ames Salmonella tester strain TA2638 has been determined for 60Co γ rays, 140 kV X rays, 5.4 keV characteristic X rays, 2.2 MeV protons, 3.1 MeV α particles, and 18 MeV/U Fe ions.
Fitzek, M., Kellerer, Albrecht M., Roos, H., Thomas, W.-H.   +3 more
core   +1 more source

Kimura's Disease of the Orbit Successfully Treated with Radiotherapy Alone: A Case Report

Case Reports in Ophthalmology, 2014
We performed radiotherapy in a 28-year-old patient with Kimura's disease of the orbit. Irradiation with 21.6 Gy was administered to the tumor bed with a single dose of 1.8 Gy in 5 weekly fractions delivered via a high-energy linear accelerator (6-MV X ...
Yoshio Monzen, Katsuzo Kiya, Takashi Nishisaka   +2 more
doaj   +1 more source

Development and operation of a pixel segmented liquid-filled linear array for radiotherapy quality assurance

, 2004
A liquid isooctane (C$_{8}$H$_{18}$) filled ionization linear array for radiotherapy quality assurance has been designed, built and tested. The detector consists of 128 pixels, each of them with an area of 1.7 mm $\times$ 1.7 mm and a gap of 0.5 mm.
A Iglesias, A Pazos, Belletti S, Boag J W, Debye P, Eberle K, F Gómez, Fowler J F, J Mosquera, J Pardo, J Pena, J Sendón, Johansson B, L Franco, M Pombar, Martens C, Martens C, Pardo J, R Lobato, van Herk M, Wickman G   +20 more
core   +1 more source

Focused very high-energy electron beams as a novel radiotherapy modality for producing high-dose volumetric elements

Scientific Reports, 2019
The increased inertia of very high-energy electrons (VHEEs) due to relativistic effects reduces scattering and enables irradiation of deep-seated tumours. However, entrance and exit doses are high for collimated or diverging beams.
K. Kokurewicz, E. Brunetti, G. Welsh, S. Wiggins, M. Boyd, A. Sorensen, A. Chalmers, G. Schettino, G. Schettino, A. Subiel, C. Desrosiers, D. Jaroszynski   +11 more
semanticscholar   +1 more source

First Characterization of Novel Silicon Carbide Detectors with Ultra-High Dose Rate Electron Beams for FLASH Radiotherapy

Applied Sciences, 2023
Ultra-high dose rate (UHDR) beams for FLASH radiotherapy present significant dosimetric challenges. Although novel approaches for decreasing or correcting ion recombination in ionization chambers are being proposed, applicability of ionimetric dosimetry ...
F. Romano, G. Milluzzo, F. di Martino, M. D’Oca, G. Felici, F. Galante, A. Gasparini, Giulia Mariani, M. Marrale, E. Medina, M. Pacitti, E. Sangregorio, V. Vanreusel, D. Verellen, A. Vignati, M. Camarda   +15 more
semanticscholar   +1 more source

Clinical consequences of relative biological effectiveness variations in proton radiotherapy of the prostate, brain and liver [PDF]

, 2013
Proton relative biological effectiveness (RBE) is known to depend on the (alpha/beta)(x) of irradiated tissues, with evidence of similar to 60% variation over (alpha/beta)(x) values from 1-10 Gy.
Carabe, Alejandro, Espana Palomares, Samuel, Grassberger, Clemens, Paganetti, Harald   +3 more
core   +1 more source

Mini-GRID radiotherapy on the CLEAR very-high-energy electron beamline: collimator optimization, film dosimetry, and Monte Carlo simulations

Physics in Medicine and Biology
Objective. Spatially-fractionated radiotherapy (SFRT) delivered with a very-high-energy electron (VHEE) beam and a mini-GRID collimator was investigated to achieve synergistic normal tissue-sparing through spatial fractionation and the FLASH effect ...
N. Clements, N. Esplen, Joseph J. Bateman, C. Robertson, M. Dosanjh, P. Korysko, W. Farabolini, R. Corsini, M. Bazalova-Carter   +8 more
semanticscholar   +1 more source

Dosimetry and radioprotection evaluations of very high energy electron beams

Scientific Reports, 2021
Very high energy electrons (VHEEs) represent a promising alternative for the treatment of deep-seated tumors over conventional radiotherapy (RT), owing to their favourable dosimetric characteristics.
T. Masilela, R. Delorme, Y. Prezado
semanticscholar   +1 more source