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Orest Ostapiak
Orest Ostapiak
Senior Physicist, Juravinski Cancer Centre; Associate Professor, McMaster University
Verified email at mcmaster.ca - Homepage
Title
Cited by
Cited by
Year
Refinements of the finite‐size pencil beam model of three‐dimensional photon dose calculation
OZ Ostapiak, Y Zhu, J Van Dyk
Medical Physics 24 (5), 743-750, 1997
591997
Megavoltage imaging with low Z targets: Implementation and characterization of an investigational system
OZ Ostapiak, PF O'Brien, BA Faddegon
Medical Physics 25 (10), 1910-1918, 1998
561998
An opposed matched field IMRT technique for prostate cancer patients with bilateral prosthetic hips
S Fattahi, OZ Ostapiak
Journal of Applied Clinical Medical Physics 13 (1), 44-57, 2012
212012
Analysis of mechanical sources of patient alignment errors in radiation therapy
DR Wyman, OZ Ostapiak, LM Gamble
Medical physics 29 (11), 2698-2704, 2002
142002
An evaluation of two approaches to skin bolus design for patients receiving radiotherapy for head and neck cancers
A Luu, L Doerwald-Munoz, O Ostapiak
Journal of Medical Imaging and Radiation Sciences 46 (3), S37-S42, 2015
82015
A phase 2 study of stereotactic body radiation therapy for squamous cell carcinoma of the head and neck (SHINE): a single arm clinical trial protocol
J Lee, NT Nguyen, J Wright, KKD Yeung, S Sagar, DH Kim, O Ostapiak, ...
BMC cancer 23 (1), 379, 2023
22023
Early results of a quality assurance program in a randomized trial of stereotactic body radiotherapy for stage I medically inoperable lung cancer
A Swaminath, M Wierzbicki, J Wright, T Tsakiridis, K Cline, C Bucci, ...
JOURNAL OF THORACIC ONCOLOGY 10 (9), S327-S327, 2015
22015
Assessment of Comfort and Shrinkage in Four Styles of Thermoplastic Masks
V Dovell, S Bhutto, L Doerwald-Munoz, O Ostapiak, G Sawesky
Journal of Medical Imaging and Radiation Sciences 45 (2), 168, 2014
22014
Evaluation of the Role of Optical Surface Monitoring Systems in Aiding Pre-CBCT Setups for Head and Neck and Neurological Cancer Patients
S DiPietro, T VanSantvoort, O Ostapiak
Journal of Medical Imaging and Radiation Sciences 51 (3), S13-S14, 2020
12020
Poster—Thur Eve—28: Optimization of a prostate cancer IGRT protocol
O Dona, K Diamond, O Ostapiak, M Wierzbicki
Medical Physics 39 (7Part3), 4629-4630, 2012
12012
SU‐E‐T‐34: Time Series Analysis of Skin Reactions during Heck and Neck IMRT
D Glennie, L Doerwald‐Munoz, O Ostapiak, M Patterson, J Hayward, ...
Medical Physics 38 (6Part10), 3493-3493, 2011
12011
SU‐E‐T‐82: Position‐Dependent Discrete Point Spread Functions for EPID IMRT QA
E Nichita, O Ostapiak, T Farrell
Medical Physics 38 (6Part11), 3504-3504, 2011
12011
Sci—Thurs PM: Planning—03: The Effect of Small Cylindrical Air Cavities on Circumferential Dose Distributions Due to Small 6 MV Photon Fields
Y Poirier, O Ostapiak
Medical Physics 36 (9Part3), 4318-4318, 2009
12009
EP. 08B. 03 Prognostic Value of Irradiated Cardiac and Metabolic Tumor Volume in Unresected LA-NSCLC Treated with Concurrent Chemo-Radiotherapy.
MG Savadkoohi, AG Gouveia, DA Ribeiro, G Anagnostopoulos, T Chow, ...
Journal of Thoracic Oncology 19 (10), S566, 2024
2024
321 Comparison of Patient-Specific Quality Assurance Results from a Deliver-Log Based Calculation System and Dose Reconstruction in Patient Anatomy Based on Phantom Measurements
G Chan, O Ostapiak, T Chow, B Liu, M Wierzbicki
Radiotherapy and Oncology 186, S136, 2023
2023
The Canadian experience in commissioning a Halcyon-Linac in a Pinnacle-MOSAIQ based centre
R Vlad, O Ostapiak, R Studinski, K Diamond, M Shim, G Chan, R Hunter
MEDICAL PHYSICS 49 (8), 5692-5692, 2022
2022
Determining Potential Benefits of Volumetric Image Matching in Radiation Therapy
S Aubert, O Ostapiak
Journal of Medical Imaging and Radiation Sciences 50 (2), S1-S2, 2019
2019
13 Years of Clinical Trial Radiation Therapy Quality Assurance in Canada
O Ostapiak, WA Beckham, Y Lee, A Nichol, T Purdie
MEDICAL PHYSICS 46 (11), 5385-5385, 2019
2019
The Evaluation of 4MV Volumetric Modulated Arc Therapy Treatment for Early Stage Laryngeal Cancer
J Ho, B Chean, O Ostapiak
Journal of Medical Imaging and Radiation Sciences 49 (2), 7, 2018
2018
Determining the Effect of Gantry Rotation Limits on Plan Quality for Head and Neck Patients with Homo-lateral Disease
O Ostapiak, J Pinizzotto
Journal of medical imaging and radiation sciences 48 (1), S19, 2017
2017
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