Zobrazeno 1 - 10 of 11 pro vyhledávání: '"Ryan Rivest"'
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Akademický článek
Stereotactic Body Radiation Therapy (SBRT) in prostate cancer in the presence of hip prosthesis – is it a contraindication? A narrative review
Autor: Sheen Dube, Vibhay Pareek, Mansi Barthwal, Febin Antony, David Sasaki, Ryan Rivest
Publikováno v: BMC Urology, Vol 24, Iss 1, Pp 1-11 (2024)
Abstract Hip replacement is a common orthopedic surgery in the aging population. With the rising incidence of prostate cancer, metallic hip prosthetics can cause considerable beam hardening and streak artifacts, leading to difficulty in identifying t
Externí odkaz: https://doaj.org/article/68fcb7c26fd1416094db2dd8cfbe72f4
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Evaluation of the ITV-margin and variables affecting bladder and mesorectal deformation during long course neoadjuvant radiotherapy for rectal cancer
Autor: Nataliya Moldovan, Jocelyn Moore, Ryan Rivest, Shahida Ahmed, Junliang Liu, Bashir M. Bashir, Pascal Lambert, Mitchell Guest, Maged Nashed
Publikováno v: Medical Dosimetry. 47:236-241
Internal target volume (ITV) margins were estimated by evaluating the movement of mesorectum and bladder during neoadjuvant long-course radiation therapy (RT) for rectal cancer. In this prospective study, 23 patients with rectal cancer had planning C
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ebff56035f4a539f597255dfa782986
https://doi.org/10.1016/j.meddos.2022.03.002
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4
Targeting the Tumor: Assessing the Impact of Bladder Volume and Position on Accuracy of Radiation Delivery for Patients with Bladder Cancer
Autor: Bashir Bashir, Aldrich Ong, Katie Galloway, Pascal Lambert, Andrew Kochan, Harvey Quon, Shahida Ahmed, Ryan Rivest, Rashmi Koul
Publikováno v: Cureus
Context Daily variations in bladder size and position can negatively impact the ability to accurately deliver radiation. Aims We attempted to quantify how bladder volumes and positions change over the course of radiotherapy for muscle invasive bladde
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a6dd346f98a12bd8fe331e670b1d90c
https://doi.org/10.7759/cureus.1638
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Characterization, prediction, and correction of geometric distortion in 3T MR images
Autor: B. Gino Fallone, Lesley Baldwin, Steven Thomas, Keith Wachowicz, Ryan Rivest
Publikováno v: Medical Physics. 34:388-399
The work presented herein describes our methods and results for predicting, measuring and correcting geometric distortions in a 3 T clinical magnetic resonance (MR) scanner for the purpose of image guidance in radiation treatment planning. Geometric
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d3ce123b12da61d49e8309e2ab39a7bd
https://doi.org/10.1118/1.2402331
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A Prospective Study to Determine Inter-observer Variability of Gross Tumor Volume with [18F] Fludeoxyglucose-PET/CT Compared to CT Alone in Stage III Non-Small Cell Lung Cancer Using Three-Dimensional Analysis
Autor: Brechin P, Bashir Bashir, Peterson D J, Ryan Rivest, Demeter S, Ahmet L, Amitava Chowdhury, Naveed Ahmed, Zoann Nugent, Shahida Ahmed, Bmc McCurdy, Hunter W M
Publikováno v: Cureus.
Purpose: This study determined the interobserver variability of Gross Tumor Volume (GTV) with [18F] Fludeoxyglucose (FDG)-PET/CT compared to CT alone in Stage III Non-Small Cell Lung Cancer (NSCLC) using 3D analysis. Materials and Methods: Twenty-nin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c87ad0437761665d8a59c38924fd07d6
https://doi.org/10.7759/cureus.143
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8
Sci-Fri PM: Radiation Therapy, Planning, Imaging, and Special Techniques - 11: Quantification of chest wall motion during deep inspiration breast hold treatments using cine EPID images and a physics based algorithm
Autor: T vanBeek, Mohamed Akra, D. Sasaki, Jorge E. Alpuche Aviles, Ryan Rivest
Publikováno v: Medical Physics. 43:4958-4958
Purpose: This work presents an algorithm used to quantify intra-fraction motion for patients treated using deep inspiration breath hold (DIBH). The algorithm quantifies the position of the chest wall in breast tangent fields using electronic portal i
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::394f101fd73b56b888291e0f906d7419
https://doi.org/10.1118/1.4961854
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9
Characterization, prediction, and correction of geometric distortion in 3 T MR images
Autor: Lesley N, Baldwin, Keith, Wachowicz, Steven D, Thomas, Ryan, Rivest, B Gino, Fallone
Publikováno v: Medical physics. 34(2)
The work presented herein describes our methods and results for predicting, measuring and correcting geometric distortions in a 3 T clinical magnetic resonance (MR) scanner for the purpose of image guidance in radiation treatment planning. Geometric
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::6d5984b21ed4eafe62044d00198717d0
https://pubmed.ncbi.nlm.nih.gov/17388155
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10
Sci-Fri PM: Dosimetry-06: Commissioning of a 3D patient specific QA system for hypofractionated prostate treatments
Autor: S Venkataraman, Bmc McCurdy, Ryan Rivest
Publikováno v: Medical Physics. 41:27-27
The objective of this work is to commission the 6MV-SRS beam model in COMPASS (v2.1, IBA-Dosimetry) and validate its use for patient specific QA of hypofractionated prostate treatments. The COMPASS system consists of a 2D ion chamber array (MatriXX{s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1dc2399804178a028fd71917b9bf066b
https://doi.org/10.1118/1.4894961
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