Results 51 to 60 of about 4,735 (211)

Comparison of the radiochromic EBT2 responses for4 MV LINAC in calibration processes

Brazilian Journal of Radiation Sciences, 2019
Actually, cancer has gained a larger dimension and become a global public health problem. Radiotherapy (RT) is a neoplasia treatment and RT linear accelerators must undergo a strict dose quality control.
Sabrina Donato Silva, André L.S Castro, Thais Melo Mendes, Luciana B. Nogueira, Tarcisio Passos Ribeiro Campos   +4 more
doaj   +1 more source

Micro silica bead scintillators for the relative dosimetry of a stereotactic radiosurgery unit

Physics and Imaging in Radiation Oncology
This work describes the procedure of using Micro Silica Beads (MSBs) to verify the output factors and profiles of a stereotactic radiosurgery unit. MSBs have shown acceptable dosimetric accuracy for measurement of Detector Output Ratios (DORs) and shot ...
Chris J. Stepanek, Jack D. Aylward, Ronald Hartley-Davies, Lucy Winch   +3 more
doaj   +1 more source

Numerical Simulation of magnetized jet creation using a hollow ring of laser beams

, 2018
Three dimensional FLASH magneto-hydrodynamics(MHD) modeling is carried out to interpret the OMEGA laser experiments of strongly magnetized, highly collimated jets driven by a ring of 20 OMEGA beams.
Birkel, A., Follett, R. K., Froula, D. H., Fu, W., Gao, L., Ji, H., Lamb, D., Li, C. K., Liang, E., Lu, Y., Petrasso, R., Sio, H., Tzeferacos, P., Wei, M.   +13 more
core   +1 more source

Investigation of EBT3 Radiochromic Film Response in a High-Dose Range of 6 MV Photon and 6 MeV Electron Beams Using a Three-Color Flatbed Scanner

East European Journal of Physics, 2020
Radiochromic film dosimetry has been commonly used for determination of dose measurement in radiotherapy for many years because of their high spatial resolution, low energy dependence and its approximate tissue equivalent.
Kerem Duruer, Durmuş Etiz, Haluk Yücel
doaj   +1 more source

Evaluation of a synthetic single-crystal diamond detector for relative dosimetry on the Leksell Gamma Knife Perfexion radiosurgery system [PDF]

, 2015
Purpose: To evaluate the new commercial PTW-60019 synthetic single-crystal microDiamond detector (PTW, Freiburg, Germany) for relative dosimetry measurements on a clinical Leksell Gamma Knife Perfexion radiosurgery system. Methods: Detector output ratios
Alfonso, Anna Ascolese, Anna Gaudino, Antonella Stravato, Aspradakis, Azangwe, Battistoni, Bilge, Casanova Borca, Chalkley, Cheung, Ciancaglioni, Ferreira, Francesca Lobefalo, Giacomo Reggiori, Gianluca Verona-Rinati, Klawikowski, Lechner, Lindquist, Ma, Ma, Mack, Mandapaka, Marco Marinelli, Marsolat, Marta Scorsetti, Massager, Micke, Moskvin, Niroomand-Rad, Novotny, Novotny, Piera Navarria, Piero Picozzi, Pietro Mancosu, Pimpinella, Ralston, Ralston, Reinhardt, Scott, Stefano Tomatis, Suriyapee, Trnka, Tsai, Underwood, Valentina Palumbo, Yu, Zani   +47 more
core   +1 more source

Experimental and computational dosimetry in an integrated workflow for remote audits in Ir‐192 interstitial brachytherapy: Development and pilot implementation

Journal of Applied Clinical Medical Physics, Volume 27, Issue 1, January 2026.
Abstract Purpose This work presents the development and pilot implementation of a comprehensive remote (postal) dosimetry audit for Ir‐192 High Dose Rate interstitial brachytherapy, integrating independent experimental and computational dosimetry procedures into a unified workflow. Methods A compact, water‐equivalent phantom was designed to accommodate
Eleftherios P Pappas, Vasiliki Peppa, Alexandra Drakopoulou, Eleni Velissariou, Zoi Thrapsanioti, Georgios Kollias, Efi Koutsouveli, Georgia Lymperopoulou, Pantelis Karaiskos   +8 more
wiley   +1 more source

Measurement of the Charge Collection Efficiency after Heavy Non-Uniform Irradiation in BaBar Silicon Detectors

, 2005
We have investigated the depletion voltage changes, the leakage current increase and the charge collection efficiency of a silicon microstrip detector identical to those used in the inner layers of the BaBar Silicon Vertex Tracker (SVT) after heavy non ...
/INFN, Pisa /Pisa U. /SLAC, /INFN, Trieste /Trieste U., /UC, Santa Barbara, Bettarini, S., Bondioli, M., Bosisio, L., Calderini, G., Campagnari, C., Dittongo, S., Forti, F., Giorgi, M.A., Marchiori, G., Rizzo, G.   +12 more
core   +4 more sources

Detector‐specific correction factors for small‐field photon dosimetry in magnetic resonance‐guided radiation therapy: A systematic review and meta‐analysis

Medical Physics, Volume 53, Issue 1, January 2026.
Abstract Background Accurate small‐field (SF) dosimetry is essential for Magnetic Resonance‐guided Radiation Therapy (MRgRT), particularly for stereotactic treatments. The static magnetic field (B‐field) alters detector response, necessitating detector‐specific correction factors kB,Qf,f$k_{B,Q}^{f,f}$ to ensure dosimetric accuracy.
Muhammed Emin Bedir, Ahtesham Ullah Khan, Wesley Culberson   +2 more
wiley   +1 more source

Measuring diffuse ultraviolet exposures using Gafchromic EBT3 films

Results in Physics, 2017
The present work proposed to use Gafchromic EBT3 films for determining spatial variations of ultraviolet (UV) exposures in the environment, which required many simultaneous measurements, and demonstrated the feasibility by showing the variation of the ...
P.Y. Tsang, P.M. Chan, K.N. Yu
doaj   +1 more source