Zobrazeno 1 - 10
of 386
pro vyhledávání: '"electronic portal imaging device"'
Publikováno v:
Journal of Biomedical Physics and Engineering, Vol 14, Iss 4, Pp 347-356 (2024)
Background: Electronic portal imaging devices (EPIDs) are applied to measure the dose and verify patients’ position.Objective: The present study aims to evaluate the performance of EPID for measuring dosimetric parameters in small photon fields.Mat
Externí odkaz:
https://doaj.org/article/7e4f2a59db184d6b8d2bd1706d222fdf
Publikováno v:
Journal of Medical Physics, Vol 48, Iss 4, Pp 350-357 (2023)
Aim: The Mobius3D software addresses limitations lacking in measurement-based methods in patient-specific quality assurance (QA). The objective of this study was to validate its dosimetric performance against conventionally used portal dose measureme
Externí odkaz:
https://doaj.org/article/caaedd6dab7c4f44beb5a3c707c93f59
Autor:
Elena N. Vasina, Natalie Kong, Peter Greer, Jose Baeza Ortega, Tomas Kron, Joanna J. Ludbrook, David Thwaites, Joerg Lehmann
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 24, Iss , Pp 1-6 (2022)
Background and purpose: Real-time treatment monitoring with the electronic portal imaging device (EPID) can conceptually provide a more accurate assessment of the quality of deep inspiration breath-hold (DIBH) and patient movement during tangential b
Externí odkaz:
https://doaj.org/article/08ea604451104dcfb1099f25e7f7b806
Publikováno v:
Journal of Yeungnam Medical Science, Vol 39, Iss 2, Pp 108-115 (2022)
Background This study was aimed at comparing and analyzing the results of FractionLab (Varian/Mobius Medical System) with those of portal dosimetry that uses an electronic portal imaging device. Portal dosimetry is extensively used for patient-specif
Externí odkaz:
https://doaj.org/article/315eca475b3b49628ca0cfbfd173f401
Autor:
James L. Bedford, Ian M. Hanson
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 22, Iss , Pp 36-43 (2022)
Background and purpose: Real-time portal dosimetry compares measured images with predicted images to detect delivery errors as the radiotherapy treatment proceeds. This work aimed to investigate the performance of a recurrent neural network for proce
Externí odkaz:
https://doaj.org/article/6bce58f953564fc19945773b963934df
Autor:
Özseven Alper
Publikováno v:
Open Chemistry, Vol 20, Iss 1, Pp 61-68 (2022)
In this study, the feasibility of using electronic portal imaging device (EPID) as an analysing equipment for bolus material was evaluated in terms of its dosimetric parameters. Seven superflab bolus material samples, 4 samples of 0.5 cm (S1–S4) an
Externí odkaz:
https://doaj.org/article/c7974d70efe14ae7b70dfac3a8ca149c
Autor:
Michael A. Carr, Maegan Gargett, Cameron Stanton, Benjamin Zwan, Hilary L. Byrne, Jeremy T. Booth
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 25, Iss , Pp 100419- (2023)
Background and purpose: Deep inspiration breath-hold (DIBH) is a technique that is widely utilised to spare the heart and lungs during breast radiotherapy. In this study, a method was developed to validate directly the intrafraction accuracy of DIBH
Externí odkaz:
https://doaj.org/article/75c05c7132294ca4a90d8f3cf85f92b0
Akademický článek
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Autor:
Yuka Ono, Michio Yoshimura, Tomohiro Ono, Takahiro Fujimoto, Yuki Miyabe, Yukinori Matsuo, Takashi Mizowaki
Publikováno v:
Radiation Oncology, Vol 16, Iss 1, Pp 1-8 (2021)
Abstract Background This study aimed to quantify errors by using a cine electronic portal imaging device (cine EPID) during deep inspiration breath-hold (DIBH) for left-sided breast cancer and to estimate the planning target volume (PTV) by variance
Externí odkaz:
https://doaj.org/article/d6c23e15cb594aa9bc409fcdfcbcf878
Publikováno v:
Journal of Medical Physics, Vol 46, Iss 4, Pp 286-294 (2021)
Aim: To determine the multileaf collimator positional error (MLC-PE) during volumetric modulated arc therapy (VMAT) delivery by studying the time-dependent MLC velocity in mathematically derivable trajectories such as straight line and conic sections
Externí odkaz:
https://doaj.org/article/3f77371c6f454237b57ff4336587be7e