Zobrazeno 1 - 10
of 20
pro vyhledávání: '"J V, Siebers"'
Publikováno v:
Medical physics. 39(8)
This work uses repeat images of intensity modulated radiation therapy (IMRT) fields to quantify fluence anomalies (i.e., delivery errors) that can be reliably detected in electronic portal images used for IMRT pretreatment quality assurance.Repeat im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b3c5a8083e191595bb8bd5336e5e6bc6
https://pubmed.ncbi.nlm.nih.gov/22894421
https://pubmed.ncbi.nlm.nih.gov/22894421
Publikováno v:
Medical physics. 39(4)
To present a method to evaluate the dose mapping error introduced by the dose mapping process. In addition, apply the method to evaluate the dose mapping error introduced by the 4D dose calculation process implemented in a research version of commerc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::562247d1630ec37d830d5a4a103a619f
https://pubmed.ncbi.nlm.nih.gov/22482633
https://pubmed.ncbi.nlm.nih.gov/22482633
Publikováno v:
Medical physics. 36(9)
A course of one to three large fractions of high dose rate (HDR) interstitial brachytherapy is an attractive alternative to intensity modulated radiation therapy (IMRT) for delivering boost doses to the prostate in combination with additional externa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d621247d802db539da4cc85c2d31765b
https://pubmed.ncbi.nlm.nih.gov/19810472
https://pubmed.ncbi.nlm.nih.gov/19810472
Autor:
I B, Mihaylov, J V, Siebers
Publikováno v:
Medical physics. 35(8)
The purpose of this study is to evaluate dose prediction errors (DPEs) and optimization convergence errors (OCEs) resulting from use of a superposition/convolution dose calculation algorithm in deliverable intensity-modulated radiation therapy (IMRT)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::34c0b8be93aac982b4b00500da4051e1
https://pubmed.ncbi.nlm.nih.gov/18777931
https://pubmed.ncbi.nlm.nih.gov/18777931
Autor:
J J, Gordon, J V, Siebers
Publikováno v:
Medical physics. 35(2)
This work introduces a new concept--the dosimetric margin distribution (DMD)--and uses it to explain the sensitivity of a group of prostate IMRT treatment plans to patient setup errors. Prior work simulated the effect of setup errors on 27 prostate I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::fa2cefeada44d7bf3cf4bfedeefac278
https://pubmed.ncbi.nlm.nih.gov/18383678
https://pubmed.ncbi.nlm.nih.gov/18383678
Publikováno v:
Medical physics. 34(6)
A strategy is proposed in which intrafraction internal target translation is corrected for by repositioning the multileaf collimator position aperture to conform to the new target pose in the beam projection, and the beam monitor units are adjusted t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b38aaab5d774735612e799e4dabc8dd3
https://pubmed.ncbi.nlm.nih.gov/17654897
https://pubmed.ncbi.nlm.nih.gov/17654897
Publikováno v:
Medical physics. 34(4)
This study quantifies the dose prediction errors (DPEs) in dynamic IMRT dose calculations resulting from (a) use of an intensity matrix to estimate the multi-leaf collimator (MLC) modulated photon fluence (DPE(IGfluence) instead of an explicit MLC pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::16d1d75696e31086fee7361e1ce68a5a
https://pubmed.ncbi.nlm.nih.gov/17500456
https://pubmed.ncbi.nlm.nih.gov/17500456
Publikováno v:
Medical physics. 34(1)
This work evaluates: (i) the size of random and systematic setup errors that can be absorbed by 5 mm clinical target volume (CTV) to planning target volume (PTV) margins in prostate intensity modulated radiation therapy (IMRT); (ii) agreement between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c80a591fe81097075bb71967e8948df2
https://pubmed.ncbi.nlm.nih.gov/17278506
https://pubmed.ncbi.nlm.nih.gov/17278506
Publikováno v:
Medical physics. 33(4)
A hybrid dose-computation method is designed which accurately accounts for multileaf collimator (MLC)-induced intensity modulation in intensity modulated radiation therapy (IMRT) dose calculations. The method employs Monte Carlo (MC) modeling to dete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c6cf6a8655e9af8be58cab4cc72ac68d
https://pubmed.ncbi.nlm.nih.gov/16696458
https://pubmed.ncbi.nlm.nih.gov/16696458
Publikováno v:
Medical physics. 32(4)
The dynamic multileaf collimator (MLC) can be used for four-dimensional (4D), or tumor tracking radiotherapy. However, the leaf velocity and acceleration limitations become a crucial factor as the MLC leaves need to respond in near real time to the i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::12045bd2aa8ade60d80096266f9c47e0
https://pubmed.ncbi.nlm.nih.gov/15895576
https://pubmed.ncbi.nlm.nih.gov/15895576