Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Konrad Leszczynski"'
Autor:
Claire Romani, BSc, Michael Conlon, PhD, Mike Oliver, PhD, Konrad Leszczynski, PhD, Michele Hunter, MRT, BSc, Kevin Lam, MRT, Silvana Spadafora, MD, FRCPC, Andrew Pearce, MD, MSc, FRCPC
Publikováno v:
Advances in Radiation Oncology, Vol 6, Iss 3, Pp 100634- (2021)
Purpose: Our institution operates a remote radiation oncology service in Northern Ontario, Canada. Since the start of the coronavirus disease 2019 pandemic, this center has operated without radiation oncologists on site owing to safety precautions, a
Externí odkaz:
https://doaj.org/article/305e8bf917fb47798728d63fba877bf4
Publikováno v:
Advances in Radiation Oncology. 7:100896
Cyberattacks are increasing year after year and many organizations, including hospitals, are becoming targets. Radiation oncology is especially vulnerable because of the reliance on computer and network capabilities to transfer relevant patient infor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::996442254df1354c14e4281346d77e48
https://doi.org/10.1016/j.adro.2022.100896
https://doi.org/10.1016/j.adro.2022.100896
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose Magnetic resonance imaging (MRI) is the primary modality for targeting brain tumors in radiotherapy treatment planning (RTP). MRI is not directly used for dose calculation since image voxel intensities of MRI are not associated with EDs of ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e74b70d472be075c04c066b33d41c5ca
https://doi.org/10.1002/acm2.12654
https://doi.org/10.1002/acm2.12654
Autor:
Andrew Pearce, Michael Conlon, M Oliver, Michele Hunter, Claire Romani, Kevin Lam, Konrad Leszczynski, Silvana Spadafora
Publikováno v:
Advances in Radiation Oncology
Advances in Radiation Oncology, Vol 6, Iss 3, Pp 100634-(2021)
Advances in Radiation Oncology, Vol 6, Iss 3, Pp 100634-(2021)
Purpose Our institution operates a remote radiation oncology service in Northern Ontario, Canada. Since the start of the coronavirus disease 2019 pandemic, this center has operated without radiation oncologists on site owing to safety precautions, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ea4839197a4afc4051a299d13d7b387
http://europepmc.org/articles/PMC7966849
http://europepmc.org/articles/PMC7966849
Autor:
Lilie L. W. Wang, Konrad Leszczynski
Publikováno v:
Medical Physics. 34:485-488
The focal spot size and shape of a medical linac are important parameters that determine the dose profiles, especially in the penumbral region. A relationship between the focal spot size and the dose profile penumbra has been studied and established
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e990eff9f5cbf11b1bb51f3279d4197f
https://doi.org/10.1118/1.2426407
https://doi.org/10.1118/1.2426407
Autor:
Konrad Leszczynski, Susan Boyko
Publikováno v:
Physics in Medicine and Biology. 46:261-265
We propose the use of anisotropic diffusion filtering to remedy difficulties in analysis of electronic portal images, stemming from their low contrast and high noise levels. Anisotropic diffusion is a nonlinear filter based on the numerical solution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e274849c98b1fcd777f70d925c9cae27
https://doi.org/10.1088/0031-9155/46/1/318
https://doi.org/10.1088/0031-9155/46/1/318
Autor:
S Loose, Konrad Leszczynski, Daniel Provost, Randall Bissett, Eding Mvilongo, Susan Boyko, Scott Cosby
Publikováno v:
Physics in Medicine and Biology. 44:253-269
With the large volume of electronic portal images acquired and stringent time constraints, it is no longer feasible to follow the convention whereby the radiation oncologist reviews and approves or rejects all portals. For that purpose we have develo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb7268b741657fa97e130a517af0c10f
https://doi.org/10.1088/0031-9155/44/1/018
https://doi.org/10.1088/0031-9155/44/1/018
Autor:
Susan Boyko, Konrad Leszczynski
Publikováno v:
Radiotherapy and Oncology. 42:213-217
In this study the authors analyze the documentation regarding the earliest known X-ray treatments with the objective of identifying the true origin of radiation therapy. The four most often quoted events, including X-ray treatments allegedly performe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92bd67b1632db7549036d728cd7e1377
https://doi.org/10.1016/s0167-8140(97)01940-3
https://doi.org/10.1016/s0167-8140(97)01940-3
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 34:489-495
Purpose : Off-line, computer-aided prescription (simulator) and treatment (portal) image registration using chamfer matching has been implemented on PC based viewing station. The purposes of this study were (a) to evaluate the performance of interact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcf51f55f7e5cefcf225dd36d69f1b02
https://doi.org/10.1016/0360-3016(95)02035-7
https://doi.org/10.1016/0360-3016(95)02035-7
Publikováno v:
Medical physics. 39(2)
For certain clinical applications, rotational intensity modulated radiation therapy (R-IMRT) techniques such as volumetric modulated arc therapy (VMAT) are capable of improved target dose coverage and shorter delivery time when compared to static, st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d113a85e747cd2a63d05531e6e70f04f
https://pubmed.ncbi.nlm.nih.gov/22320817
https://pubmed.ncbi.nlm.nih.gov/22320817