Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Idris A. Elbakri"'
Autor:
Boyd McCurdy, Timothy Van Beek, Idris A. Elbakri, Harry Ingleby, Kaiming Guo, Eric Van Uytven
Publikováno v:
Journal of Applied Clinical Medical Physics
On‐treatment EPID images are contaminated with patient‐generated scattered photons. If this component can be accurately estimated, its effect can be removed, and therefore a corresponding in vivo patient dose estimate will be more accurate. Our g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12dff1c8c5e2dd078b30ad2f16705d51
https://doi.org/10.1002/acm2.13439
https://doi.org/10.1002/acm2.13439
Autor:
Michelle Cottreau, Thorarin A. Bjarnason, Robert Rees, Pierre Therrien, Ingvar A J Fife, Edward Kendall, Brent Preston, Lawrence H. Le, John E. Aldrich, I Martin Benoît Gagnon, Clément Arsenault, Judy Kainz, Idris A. Elbakri, E. Tonkopi, Errol E Stewart, Ting-Yim Lee
Publikováno v:
Journal of Applied Clinical Medical Physics
X‐ray regulations and room design methodology vary widely across Canada. The Canadian Organization of Medical Physicists (COMP) conducted a survey in 2016/2017 to provide a useful snapshot of existing variations in rules and methodologies for human
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b78734ffa42c7eff1f8d7176e4b874d6
https://doi.org/10.1002/acm2.12708
https://doi.org/10.1002/acm2.12708
Publikováno v:
Physics in medicine and biology. 65(9)
Scattered radiation unavoidably generated in the patient will negatively impact both kilovoltage (KV) and megavoltage (MV) imaging applications. Recently, 'hybrid' methods (i.e. combining analytical and Monte Carlo (MC) techniques) are being investig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e4fcdac1390398e339827eb9d227788
https://pubmed.ncbi.nlm.nih.gov/32160599
https://pubmed.ncbi.nlm.nih.gov/32160599
Autor:
Eric Van Uytven, Boyd McCurdy, Harry Ingleby, Kaiming Guo, Timothy Van Beek, Idris A. Elbakri
Publikováno v:
Physics in Medicine & Biology. 65:185008
In vivo dosimetry methods can verify the prescription dose is delivered to the patient during treatment. Unfortunately, in exit dosimetry, the megavoltage image is contaminated with patient-generated scattered photons. However, estimation and removal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8420bddaf1ce29fa4dcf429aa41bb6f2
https://doi.org/10.1088/1361-6560/ab9ae4
https://doi.org/10.1088/1361-6560/ab9ae4
Publikováno v:
Advances in Computed Tomography. :57-65
The present study utilized a porcine model for qualitative and quantitative assessment of the diagnostic quality of non-contrast abdominal computed tomography (CT) images generated by Adaptive Statistical Iterative Reconstruction (ASIR, GE Healthcare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba42a869b1beca2ea62d57c6daaead72
https://doi.org/10.4236/act.2015.44008
https://doi.org/10.4236/act.2015.44008
Publikováno v:
Medical physics. 35(7Part3)
A significant challenge to the implementation of cone-beam computed tomography (CBCT) for high-resolution imaging is the high scatter to primary ratio. Scatter causes cupping and shading artifacts, increased noise and decreased contrast in reconstruc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb2be440c3eb7f2e3e10d084988307a6
https://pubmed.ncbi.nlm.nih.gov/28512914
https://pubmed.ncbi.nlm.nih.gov/28512914
Autor:
Idris A. Elbakri
Publikováno v:
Radiation Protection Dosimetry. 158:43-50
Dose-area product-to-effective dose (E) conversion factors for chest, abdomen and abdomen-chest neonatal radiographs were computed. Seven patient models in the Monte Carlo software, PCXMC, were defined, representing neonates ranging in weight from 0.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d79d78e6b2116222bcd8e2a959323b21
https://doi.org/10.1093/rpd/nct192
https://doi.org/10.1093/rpd/nct192
Publikováno v:
Radiation Protection Dosimetry. 157:525-535
The purpose of this study was to document CT doses for common CT examinations performed throughout the province of Manitoba. Survey forms were sent out to all provincial CT sites. Thirteen out of sixteen (81 %) sites participated. The authors assesse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e1a716480909a46337f9196bd1df92c
https://doi.org/10.1093/rpd/nct168
https://doi.org/10.1093/rpd/nct168
Autor:
Azeez Omotayo, Idris A. Elbakri
Publikováno v:
Journal of X-ray science and technology. 24(6)
OBJECTIVE Iterative algorithms are gaining clinical acceptance in CT. We performed objective phantom-based image quality evaluation of five commercial iterative reconstruction algorithms available on four different multi-detector CT (MDCT) scanners a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::422130317df6715826a31e3b02957d0f
https://pubmed.ncbi.nlm.nih.gov/27612054
https://pubmed.ncbi.nlm.nih.gov/27612054
Publikováno v:
Journal of Applied Clinical Medical Physics
The objective of this study was to assess the effect of antiscatter grid use on tomosynthesis image quality. We performed an observer study that rated the image quality of digital tomosynthesis scout radiographs and slice images of a Leeds TO.20 cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9b3946c567927162851b8e20062882e
http://europepmc.org/articles/PMC5718745
http://europepmc.org/articles/PMC5718745