Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Dose linearity"'
Autor:
Akihiro Takemura, Yusuke Morioka, Thunyarat Chusin, Kosuke Matsubara, Ayaka Hirosawa, Masayasu Kitagawa
Publikováno v:
Physical and Engineering Sciences in Medicine. 44:1311-1319
We aimed to evaluate properties of optically stimulated luminescence dosimeters (OSLDs) and radiophotoluminescent glass dosimeters (RPLDs) used in dual-source dual-energy (DE) computed tomography (DECT) dosimetry. Energy dependence was evaluated in s
Autor:
Hiroshi Toyama, Masakazu Tsujimoto, Yoshikazu Kobayashi, Seiji Shirakawa, Masanori Watanabe, Taro Okui, Masaki Uno, Atsushi Teramoto, Ryo Matsukiyo, Seiichiro Ota
Publikováno v:
Physical and Engineering Sciences in Medicine. 44:365-375
The aim of this study was to investigate the relationship of quantitative parameters between the two-dimensional region of interest (ROI) and the three-dimensional volume of interest (VOI) for accumulation of radiopharmaceutical. Single-photon emissi
Publikováno v:
Journal of Medical Physics, Vol 37, Iss 1, Pp 4-7 (2012)
Dose linearity studies on conventional linear accelerators show a linearity error at low monitor units (MUs). The purpose of this study was to establish the dose linearity and MU stability characteristics of a cyberknife (Accuray Inc., USA) stereotac
Externí odkaz:
https://doaj.org/article/b0b852236b3044bd9808fe5b125b978f
Autor:
Yoshiharu Morimoto, Katsunori Yogo, Kiyoshi Yamada, Yasushi Nagata, Kentaro Miki, Takeo Nakashima, Minoru Nakao, Hideharu Miura, Hiroshige Nozaki, Fumika Hosono, Masahiro Hayata, Yusuke Ochi, Daisuke Kawahara, Toru Yoshizaki, Shuichi Ozawa, Kosaku Habara
Publikováno v:
Journal of Applied Clinical Medical Physics
Computed tomography (CT) data are required to calculate the dose distribution in a patient’s body. Generally, there are two CT number calibration methods for commercial radiotherapy treatment planning system (RTPS), namely CT number‐relative elec
Autor:
Anton Mans, Ben J. Mijnheer, F.W. Wittkämper, Thijs Perik, Begoña Vivas-Maiques, Igor Olaciregui-Ruiz, J. Kaas
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose Despite their availability and simplicity of use, Electronic Portal Imaging Devices (EPIDs) have not yet replaced detector arrays for patient specific QA in 3D. The purpose of this study is to perform a large scale dosimetric evaluation of tr
Publikováno v:
Diagnostics
Diagnostics, Vol 11, Iss 150, p 150 (2021)
Diagnostics; Volume 11; Issue 2; Pages: 150
Diagnostics, Vol 11, Iss 150, p 150 (2021)
Diagnostics; Volume 11; Issue 2; Pages: 150
This study aimed to evaluate the property of small dosimeters used for measuring eye lens doses for medical staff during fluoroscopic examination. Dose linearity, energy dependence, and directional dependence of scattered X-rays were evaluated for sm
Autor:
I. H. Hashim, Suhairul Hashim, M. Yusop, N.E. Ahmad, A.B.A. Kadir, D.A. Bradley, Sib Krishna Ghoshal, Y. Musa
Publikováno v:
Applied Radiation and Isotopes. 135:7-11
The performance of optically stimulated luminescence dosimeters (OSLDs, Al2O3:C) was evaluated in terms of the operational quantity of HP(10) in Co-60 external beam teletherapy unit. The reproducibility, signal depletion, and dose linearity of each d
Publikováno v:
Radiation Measurements. 106:303-311
The Public Health England (PHE) neutron and radon personal dosimetry services based on electrochemical etching of PADC have been running since 1986. Changes to the detector material have required a new etch cycle to be developed to improve linearity
Publikováno v:
Journal of Health Science and Medical Research (JHSMR), Vol 35, Iss 4, Pp 361-371 (2017)
Objective: To evaluatethe dosimetric characteristics of electronics portal imaging device (EPID) for 6 and 10 megavoltage(MV) of flattening filter-free (FFF) beams. Material and Method: The EPID characteristicsfor FFF beams have been evaluated as fol
Publikováno v:
Physica Medica. 38:81-87
Purpose We aimed to evaluate the characteristics of optically stimulated luminescence dosimeters (OSLDs) with fully filled deep electron/hole traps, and determine the optimal bleaching conditions for these OSLDs to minimize the changes in dose sensit