Results 51 to 60 of about 1,159,598 (181)

Out‐of‐field dose equivalents delivered by proton therapy of prostate cancer

Medical Physics, 2007
Measurements were performed to assess the dose equivalent outside a primary proton treatment field, using a silicon‐on‐insulator (SOI) microdosimeter. The SOI microdosimeter was placed on the surface of an anthropomorphic phantom and dose equivalents were determined as a function of lateral distance from a typical passively scattered and modulated ...
Wroe, A., Rosenfeld, Anatoly B., Schulte, R.   +2 more
openaire   +4 more sources

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

Determination of the cosmic-ray-induced neutron flux and ambient dose equivalent at flight altitude [PDF]

, 2015
Journal of Physics: Conference Series, Volumen 630There is interest in modeling the atmosphere in the South Atlantic Magnetic Anomaly in order to obtain information about the cosmic-ray induced neutron spectrum and angular distribution as functions of ...
Carlson, Brett Vern, Cortés Giraldo, Miguel Antonio, Federico, C.A, Gonçalez, O.L., Pazianotto, Maurício T., Quesada Molina, José Manuel   +5 more
core   +1 more source

Dosimetric evaluation in breast tumours: comparison of three techniques [PDF]

, 2012
Objetivo – Comparar a técnica convencional, a técnica de energias mistas e a técnica field-in-field com energias mistas, verificando a dose recebida nos órgãos de risco e no volume alvo.
Bressan, Stephania, Coelho, Carina Marques, Mamboury, Nicholas, Marques, João, Monsanto, Fátima, Sá, Ana Cravo   +5 more
core  

Dosimetric comparison study between intensity modulated radiation therapy and three-dimensional conformal proton therapy for pelvic bone marrow sparing in the treatment of cervical cancer. [PDF]

, 2010
The objective was to compare intensity-modulated radiation therapy (IMRT) with 3D conformal proton therapy (3DCPT) in the treatment of cervical cancer. In particular, each technique's ability to spare pelvic bone marrow (PBM) was of primary interest in ...
Huh, Soon N, Liang, Yun, Mell, Loren K, Mundt, Arno J, Nichols, R Charles, Song, William Y, Watkins, W Tyler, White, Greg   +7 more
core   +3 more sources

Investigation of LINAC Structural Effects on Photoneutron Specified Parameters Using FLUKA code [PDF]

Iranian Journal of Medical Physics, 2020
Introduction: The utilization of high-energy photons in the medical linear accelerator can lead to photoneutron production. This study aimed to evaluate the effect of the physical components of the head, including flattening filter (FF) andmultileaf ...
Mohammad Ashrafinia, Asghar Hadadi, Dariush Sardari, Elham Saeedzadeh   +3 more
doaj   +1 more source

Comprehensive analysis of peripheral dose in electron beam therapy with a Varian TrueBeam Linac

Radiation Medicine and Protection
Objective: To investigate the characteristics of peripheral doses outside electron-beam applicators in Varian TrueBeam linacs. Method: Peripheral doses outside the electron applicator were measured for 6-, 9- and 12-MeV beams at the maximum dose depth ...
Kapil Dev Maharaj, Mahsheed Sabet, Joshua Dass, Mounir Ibrahim, Talat Mahmood, Pejman Rowshanfarzad   +5 more
doaj   +1 more source

Unusual complications after MammoSite brachytherapy: out‐of‐field rib fracture and Mondor's disease

Precision Radiation Oncology, 2021
Recent reports have documented in‐field rib fractures as a rare complication of accelerated partial breast irradiation. Here, we report a case of an out‐of‐field rib fracture, with a maximum point dose of
Elham Rahimy, Suzanne Evans
doaj   +1 more source

Out-Of-Field Dose Measurement and Second Cancer-Risk Estimation Following External Beam Radiotherapy and Brachytherapy for Cervical Cancer Treatment: A Phantom Study [PDF]

Iranian Journal of Medical Physics, 2020
Introduction: The present study aimed to measure the scatter and leakage dose received by out-of-field organs while delivering Radiotherapy (RT) treatment of cervical cancer. Moreover, this study estimated the risk of second cancer (SC). The doses to out-
Hemalatha A, ATHIYAMAN MAYILVAGANAN, Mary Joan, Arun Chougule, kumar HS   +4 more
doaj   +1 more source

Characterisation of out-of-field dose at shallow depths for external beam radiotherapy: implications for eye lens dose

Australasian Physical & Engineering Sciences in Medicine, 2019
Re-evaluation of the eye lens radio-sensitivity by the ICRP in 2011 resulted in a significant reduction of the threshold for lens opacities from 8 Gy to 0.5 Gy. This has led to an increase in concern for eye lens doses from treatment sites further from the eye than previously considered.
Baradaran, TC, Cutajar, DL, Qi, Y, Ralston, A   +3 more
openaire   +3 more sources