Malcolm McEwen, PhD - Publications

Affiliations: 
National Research Council, Canada, Ottawa, Ontario, Canada 

58 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2025 Renaud J, Muir BR, Williams A, McEwen M. Electron beam monitoring of a modified conventional medical accelerator with a portable current transformer system traceable to primary electrical standards. Medical Physics. PMID 39904607 DOI: 10.1002/mp.17653  0.34
2023 El Gamal I, Dessureault J, McEwen MR. A novel calorimeter for synchrotron produced monochromatic x-ray beams. Medical Physics. PMID 37287315 DOI: 10.1002/mp.16526  0.349
2022 Szpala S, Renaud J, Muir BR, Bourgouin A, Kohli K, McEwen M. Calorimeter measurements of absolute dose in aluminum, a surrogate of bone, to validate dose-to-medium in Acuros XB. Physics in Medicine and Biology. 68. PMID 36579808 DOI: 10.1088/1361-6560/aca869  0.709
2020 Schüller A, Heinrich S, Fouillade C, Subiel A, De Marzi L, Romano F, Peier P, Trachsel M, Fleta C, Kranzer R, Caresana M, Salvador S, Busold S, Schönfeld A, McEwen M, et al. The European Joint Research Project UHDpulse - Metrology for advanced radiotherapy using particle beams with ultra-high pulse dose rates. Physica Medica : Pm : An International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (Aifb). 80: 134-150. PMID 33181444 DOI: 10.1016/j.ejmp.2020.09.020  0.336
2020 Andreo P, Burns DT, Kapsch RP, McEwen MR, Vatnitsky S, Andersen CE, Ballester F, Borbinha J, Delaunay F, Francescon P, Hanlon M, Mirzakhanian L, Muir BR, Ojala J, Oliver CP, et al. Determination of consensus k_Q values for megavoltage photon beams for the update of IAEA TRS-398. Physics in Medicine and Biology. PMID 32182598 DOI: 10.1088/1361-6560/Ab807B  0.36
2020 McEwen M, Miller A, Pazos I, Sharpe P. Determination of a consensus scaling factor to convert a Co-60-based alanine dose reading to yield the dose delivered in a high energy electron beam Radiation Physics and Chemistry. 171: 108673. DOI: 10.1016/J.Radphyschem.2019.108673  0.571
2019 Bourgouin A, Cojocaru C, Ross C, McEwen M. Determination of W in high energy electron beams using graphite detectors. Medical Physics. PMID 31424563 DOI: 10.1002/Mp.13772  0.704
2019 Muir B, Rogers D, McEwen M. Sci-Thur PM: YIS - 07: Monte Carlo simulations to obtain several parameters required for electron beam dosimetry. Medical Physics. 39: 4623. PMID 28516522 DOI: 10.1118/1.4740104  0.541
2018 Roy T, Tessier F, McEwen M. A system for the measurement of electron stopping powers: proof of principle using a pure β-emitting source Radiation Physics and Chemistry. 149: 134-141. DOI: 10.1016/J.Radphyschem.2018.03.006  0.45
2017 McEwen M, DeWerd L, Ibbott G, Followill D, Rogers DWO, Seltzer S, Seuntjens J, Kawachi T, Katayose T, Kodama T, Miyasaka R. Addendum to the AAPM's TG-51 Protocol for Clinical Reference Dosimetry of High-Energy Photon Beams. Igaku Butsuri : Nihon Igaku Butsuri Gakkai Kikanshi = Japanese Journal of Medical Physics : An Official Journal of Japan Society of Medical Physics. 37: 2-24. PMID 28924094 DOI: 10.11323/Jjmp.37.1_2  0.414
2017 Muir BR, McEwen MR. Technical Note: On the use of cylindrical ionization chambers for electron beam reference dosimetry. Medical Physics. PMID 28913919 DOI: 10.1002/mp.12582  0.404
2017 Muir BR, Cojocaru CD, McEwen MR, Ross CK. Electron beam water calorimetry measurements to obtain beam quality conversion factors. Medical Physics. PMID 28688120 DOI: 10.1002/mp.12463  0.468
2017 McEwen MR, Taank J. Examining the influence of humidity on reference ionization chamber performance. Medical Physics. 44: 694-702. PMID 28133754 DOI: 10.1002/mp.12057  0.354
2016 McEwen M, Roy T, Tessier F. Sci-Sat AM: Radiation Dosimetry and Practical Therapy Solutions - 11: Commissioning of a system for the measurement of electron stopping powers Medical Physics. 43: 4961-4961. DOI: 10.1118/1.4961865  0.509
2016 Cojocaru C, Mui B, McEwen M, Ross C, Klassen N, Marchington D. Sci-Sat AM: Radiation Dosimetry and Practical Therapy Solutions - 09: Stability of a water calorimetry system as a primary standard for absorbed dose to water Medical Physics. 43: 4960-4961. DOI: 10.1118/1.4961863  0.498
2016 Bourgouin A, McEwen M. TH-AB-201-08: Ion Chamber Dose Measurements - Problems with the Temperature-Pressure Correction Factor Medical Physics. 43: 3851-3851. DOI: 10.1118/1.4958037  0.672
2015 Renaud J, Sarfehnia A, Marchant K, McEwen M, Ross C, Seuntjens J. Direct measurement of electron beam quality conversion factors using water calorimetry. Medical Physics. 42: 6357. PMID 26520727 DOI: 10.1118/1.4931970  0.51
2015 Ganesan R, McEwen MR. Calibration of radiotherapy ionization chambers using Co-60 is outdated and should be replaced by direct calibration in linear accelerator beams Medical Physics. 42: 5003-5006. PMID 26328950 DOI: 10.1118/1.4922710  0.35
2015 El Gamal I, Cojocaru C, Mainegra-Hing E, McEwen M. The Fricke dosimeter as an absorbed dose to water primary standard for Ir-192 brachytherapy. Physics in Medicine and Biology. 60: 4481-95. PMID 25988983 DOI: 10.1088/0031-9155/60/11/4481  0.493
2015 McEwen M. TH‐E‐304‐00: Reference Dosimetry for Beam Modalities Other Than MV Photons Medical Physics. 42: 3739-3739. DOI: 10.1118/1.4926283  0.522
2015 McEwen M, Sharpe P, Vörös S. Evaluation of alanine as a reference dosimeter for therapy level dose comparisons in megavoltage electron beams Metrologia. 52: 272-279. DOI: 10.1088/0026-1394/52/2/272  0.587
2015 Flint DB, Granville DA, Sahoo N, McEwen M, Sawakuchi GO. Ionization density dependence of the curve shape and ratio of blue to UV emissions of Al2O3: C optically stimulated luminescence detectors exposed to 6-MV photon and therapeutic proton beams Radiation Measurements. DOI: 10.1016/J.Radmeas.2016.02.002  0.527
2014 McEwen M, DeWerd L, Ibbott G, Followill D, Rogers DW, Seltzer S, Seuntjens J. Addendum to the AAPM's TG-51 protocol for clinical reference dosimetry of high-energy photon beams. Medical Physics. 41: 041501. PMID 24694120 DOI: 10.1118/1.4866223  0.48
2014 Muir BR, McEwen MR. SU-D-19A-01: Can Farmer-Type Ionization Chambers Be Used to Improve the Accuracy of Low-Energy Electron Beam Reference Dosimetry? Medical Physics. 41: 109-109. DOI: 10.1118/1.4887864  0.326
2012 Gamal IE, Cojocaru C, Ross C, Marchington D, McEwen M. Sci-Sat AM: Brachy - 03: Feasibility study of the determination of absorbed dose to water using a fricke based system. Medical Physics. 39: 4645. PMID 28516646 DOI: 10.1118/1.4740210  0.451
2012 Ali E, McEwen M, Rogers D. Sci-Thur PM: YIS - 02: A validated approach for clinical linacs to accurately determine the photon spectra and the incident electron energy. Medical Physics. 39: 4622. PMID 28516542 DOI: 10.1118/1.4740099  0.502
2012 Bouchard H, McEwen M. Comment on "linearization of dose-response curve of the radiochromic film dosimetry system" [Med. Phys. 39(8), 4850-4857 (2012)]. Medical Physics. 39: 7171-2; author reply. PMID 23127108 DOI: 10.1118/1.4762820  0.376
2012 Muir BR, McEwen MR, Rogers DW. Beam quality conversion factors for parallel-plate ionization chambers in MV photon beams. Medical Physics. 39: 1618-31. PMID 22380394 DOI: 10.1118/1.3687864  0.363
2012 DeWerd L, Seuntjens J, Rivard M, McEwen M. TU-A-213AB-01: Dosimetry for Ir-192 HDR Brachytherapy - Present Status and Future Direction Medical Physics. 39: 3884-3885. DOI: 10.1118/1.4735857  0.494
2011 Lacroix F, Guillot M, McEwen M, Gingras L, Beaulieu L. Extraction of depth-dependent perturbation factors for silicon diodes using a plastic scintillation detector. Medical Physics. 38: 5441-7. PMID 21992363 DOI: 10.1118/1.3637496  0.575
2010 Lacroix F, Guillot M, McEwen M, Cojocaru C, Gingras L, Beddar AS, Beaulieu L. Extraction of depth-dependent perturbation factors for parallel-plate chambers in electron beams using a plastic scintillation detector. Medical Physics. 37: 4331-42. PMID 20879593 DOI: 10.1118/1.3463383  0.439
2010 McEwen MR. Measurement of ionization chamber absorbed dose k(Q) factors in megavoltage photon beams. Medical Physics. 37: 2179-93. PMID 20527552 DOI: 10.1118/1.3375895  0.326
2010 Tessier F, Hooten BD, McEwen MR. Zero-shift thimble ionization chamber. Medical Physics. 37: 1161-3. PMID 20384252 DOI: 10.1118/1.3314072  0.306
2009 Faddegon BA, Sawkey D, O'Shea T, McEwen M, Ross C. Treatment head disassembly to improve the accuracy of large electron field simulation. Medical Physics. 36: 4577-91. PMID 19928089 DOI: 10.1118/1.3218764  0.384
2009 Ververs J, McEwen M, Siebers J. SU-GG-BRC-08: Improving Buildup Region Measurement Accuracy Using a Surface Location Method Medical Physics. 36: 2683-2683. DOI: 10.1118/1.3182184  0.472
2008 Cojocaru CD, Ross CK, McEwen MR, McDonald AF, Faddegon BA. Sci-Fri PM: Planning-01: Measured electron and x-ray angular distribution data for benchmarking Monte Carlo codes. Medical Physics. 35: 3412. PMID 28512874 DOI: 10.1118/1.2965973  0.412
2008 Ross CK, McEwen MR, McDonald AF, Cojocaru CD, Faddegon BA. Measurement of multiple scattering of 13 and 20 MeV electrons by thin foils Medical Physics. 35: 4121-4131. PMID 18841865 DOI: 10.1118/1.2968095  0.307
2008 McEwen MR, Kawrakow I, Ross CK. The effective point of measurement of ionization chambers and the build-up anomaly in MV x-ray beams. Medical Physics. 35: 950-8. PMID 18404931 DOI: 10.1118/1.2839329  0.421
2008 McEwen M, Rogers D. TH-D-352-02: New KQ Factors for Reference Dosimetry in High-Energy Photon Beams Medical Physics. 35: 2994-2994. DOI: 10.1118/1.2962944  0.313
2007 La Russa DJ, McEwen M, Rogers DW. An experimental and computational investigation of the standard temperature-pressure correction factor for ion chambers in kilovoltage x rays. Medical Physics. 34: 4690-9. PMID 18196796 DOI: 10.1118/1.2799580  0.48
2006 McEwen M, Palmans H, Williams A. An empirical method for the determination of wall perturbation factors for parallel-plate chambers in high-energy electron beams. Physics in Medicine and Biology. 51: 5167-81. PMID 17019031 DOI: 10.1088/0031-9155/51/20/006  0.576
2006 McEwen MR, Niven D. Characterization of the phantom material virtual water in high-energy photon and electron beams. Medical Physics. 33: 876-87. PMID 16696463 DOI: 10.1118/1.2174186  0.417
2006 McEwen M, Williams A, Palmans H. SU‐FF‐T‐87: An Empirical Method for the Determination of Wall Perturbation Factors for Parallel‐Plate Chambers in High Energy Electron Beams Medical Physics. 33: 2068-2068. DOI: 10.1118/1.2241012  0.588
2005 Tonkopi E, McEwen MR, Walters BR, Kawrakow I. Influence of ion chamber response on in-air profile measurements in megavoltage photon beams. Medical Physics. 32: 2918-27. PMID 16266106 DOI: 10.1118/1.2011090  0.364
2005 McCaffrey JP, Downton B, Shen H, Niven D, McEwen M. Pre-irradiation effects on ionization chambers used in radiation therapy. Physics in Medicine and Biology. 50: N121-33. PMID 15972973 DOI: 10.1088/0031-9155/50/13/N01  0.386
2005 Zeng GG, McEwen MR, Rogers DW, Klassen NV. An experimental and Monte Carlo investigation of the energy dependence of alanine/EPR dosimetry: II. Clinical electron beams. Physics in Medicine and Biology. 50: 1119-29. PMID 15798312 DOI: 10.1088/0031-9155/50/6/006  0.541
2005 Helt-Hansen J, Miller A, Duane S, Sharpe P, McEwen M, Clausen S. Calorimetry for dose measurement at electron accelerators in the 80–120keV energy range Radiation Physics and Chemistry. 74: 354-371. DOI: 10.1016/J.Radphyschem.2005.05.017  0.723
2004 McEwen M. Comment on "determination of the depth of 50% of maximum ionization, I50, for electron beams by the divided difference method" [med. phys. 31, 2068-2074 (2004)]. Medical Physics. 31: 3158-9; author reply. PMID 15587668 DOI: 10.1118/1.1803411  0.464
2004 Zeng GG, McEwen MR, Rogers DW, Klassen NV. An experimental and Monte Carlo investigation of the energy dependence of alanine/EPR dosimetry: I. Clinical x-ray beams. Physics in Medicine and Biology. 49: 257-70. PMID 15083670 DOI: 10.1088/0031-9155/49/2/006  0.399
2004 Helt-Hansen J, Miller A, McEwen M, Sharpe P, Duane S. Calibration of thin-film dosimeters irradiated with 80–120 kev electrons Radiation Physics and Chemistry. 71: 355-359. DOI: 10.1016/J.Radphyschem.2004.03.032  0.686
2003 Thwaites DI, DuSautoy AR, Jordan T, McEwen MR, Nisbet A, Nahum AE, Pitchford WG. The IPEM code of practice for electron dosimetry for radiotherapy beams of initial energy from 4 to 25 MeV based on an absorbed dose to water calibration. Physics in Medicine and Biology. 48: 2929-70. PMID 14529204 DOI: 10.1088/0031-9155/48/18/301  0.496
2003 McEwen MR, DuSautoy AR. Characterization of the water-equivalent material WTe for use in electron beam dosimetry. Physics in Medicine and Biology. 48: 1885-93. PMID 12884922 DOI: 10.1088/0031-9155/48/13/302  0.391
2001 Nutbrown RF, McEwen MR, Thomas RA, Duane S, Shipley DR. Comparison of conversion factors for x-ray beams from a Philips SL15 and the NPL linear accelerator. Physics in Medicine and Biology. 46: N245-52. PMID 11720365 DOI: 10.1088/0031-9155/46/11/401  0.69
2001 McEwen MR, Williams AJ, DuSautoy AR. Determination of absorbed dose calibration factors for therapy level electron beam ionization chambers. Physics in Medicine and Biology. 46: 741-55. PMID 11277222 DOI: 10.1088/0031-9155/46/3/310  0.438
2000 McEwen MR, Duane S. A portable calorimeter for measuring absorbed dose in the radiotherapy clinic. Physics in Medicine and Biology. 45: 3675-91. PMID 11131192 DOI: 10.1088/0031-9155/45/12/312  0.66
1998 McEwen MR, DuSautoy AR, Williams AJ. The calibration of therapy level electron beam ionization chambers in terms of absorbed dose to water. Physics in Medicine and Biology. 43: 2503-19. PMID 9755942 DOI: 10.1088/0031-9155/43/9/006  0.469
1998 Burns DT, McEwen MR. Ion recombination corrections for the NACP parallel-plate chamber in a pulsed electron beam. Physics in Medicine and Biology. 43: 2033-45. PMID 9725587 DOI: 10.1088/0031-9155/43/8/003  0.306
1995 Burns DT, Duane S, McEwen MR. A new method to determine ratios of electron stopping powers to an improved accuracy. Physics in Medicine and Biology. 40: 733-9. PMID 7652004 DOI: 10.1088/0031-9155/40/5/002  0.625
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