Article

Brooks, F M D; Glenn, M C; Hernandez, V; Saez, J; Pollard-Larkin, J M; Peterson, C B; Howell, R M; Nelson, C L; Clark, C H; Kry, S F (2025) Is the Imaging Radiation Oncology Core Head and Neck Credentialing Phantom an Effective Surrogate for Different Anatomic Sites? International Journal of Radiation Oncology*Biology*Physics, 121 (3). pp. 811-821. ISSN 03603016

McGarry, C K; Tonino Baldion, A; Burnley, J; Byrne, N; Doolan, P J; Jenkins, R; Jones, E; Jones, M R; Marshall, H L; Milliken, F; Sands, G; Woolliams, P; Wright, T; Clark, C H (2025) IPEM topical report: guidance on 3D printing in radiotherapy. Physics in Medicine & Biology, 70 (4). 04TR01 ISSN 0031-9155

O'Daniel, J; Hernandez, V; Clark, C H; Esposito, M; Lehmann, J; McNiven, A; Olaciregui‐Ruiz, I; Kry, S (2025) Which failures do patient‐specific quality assurance systems need to catch? Medical Physics, 52 (1). pp. 88-98. ISSN 0094-2405

Beveridge, S; Alves, A; Hussein, M; Clark, C H; Jornet, N; Viegas, C C B; Reniers, B; Alvarez, P E; Azangwe, G; Chelminski, K; Dimitriadis, A; Kazantsev, P; Swamidas, J (2024) An international film dosimetry intercomparison to establish a multi‐center audit framework. Medical Physics, 51 (12). pp. 9071-9087. ISSN 0094-2405

Misson, S; Palmer, A L; Diez, P; Hussein, M; Clark, C H (2024) National radiotherapy dosimetry audit in the UK – A vision and roadmap. IPEM-Translation, 12. 100032 ISSN 26672588

Webster, A; Mundora, Y; Clark, C H; Hawkins, M A (2024) A systematic review of the impact of abdominal compression and breath-hold techniques on motion, inter-fraction set-up errors, and intra-fraction errors in patients with hepatobiliary and pancreatic malignancies. Radiotherapy and Oncology, 201. 110581 ISSN 01678140

Esposito, M; Baldoni, R; Bossuyt, E; Bresciani, S; Clark, C H; Jones, M; Kry, S; Perry, J; van de Kamer, J; Verellen, D; Jornet, N (2024) A commissioning protocol for portal imaging-based radiotherapy in vivo dosimetry systems. Physics and Imaging in Radiation Oncology, 32. 100666 ISSN 24056316

Seravalli, E; Bosman, M E; Han, C; Losert, C; Pazos, M; Engström, P E; Engellau, J; Fulcheri, C P L; Zucchetti, C; Saldi, S; Ferrer, C; Ocanto, A; Hiniker, S M; Clark, C H; Hussein, M; Misson-Yates, S; Kobyzeva, D A; Loginova, A A; Hoeben, B A W (2024) Technical recommendations for implementation of Volumetric Modulated Arc Therapy and Helical Tomotherapy Total Body Irradiation. Radiotherapy and Oncology, 197. 110366 ISSN 01678140

Kirby, A M; Guckenberger, M; Slotman, B J; Clark, C H; Eriksen, J G; van der Heide, U; De Ioanna, S; Gasparotto, C; Cortese, A J (2024) European Society of Radiotherapy and Oncology (ESTRO) strategy 2024–2026: Growth and diversification in a rapidly changing world. Radiotherapy and Oncology, 196. 110283 ISSN 01678140

Brooks, FM D; Glenn, M C; Hernandez, V; Saez, J; Mehrens, H; Pollard‐Larkin, J M; Howell, R M; Peterson, C B; Nelson, C L; Clark, C H; Kry, S F (2024) A radiotherapy community data‐driven approach to determine which complexity metrics best predict the impact of atypical TPS beam modeling on clinical dose calculation accuracy. Journal of Applied Clinical Medical Physics, 25 (5). e14318 ISSN 1526-9914

Sands, G; Clark, C H; McGarry, C K (2023) A review of 3D printing utilisation in radiotherapy in the United Kingdom and Republic of Ireland. Physica Medica, 115. 103143 ISSN 11201797

Marshall, H; Selvan, T; Ahmad, R; Bento, M; Veiga, C; Sands, G; Malone, C; King, R B; Clark, C H; McGarry, C K (2023) Evaluation of a novel phantom for the quality assurance of a six-degree-of-freedom couch 3D-printed at multiple centres. Physica Medica, 114. 103136 ISSN 11201797

Fast, M F; Lydiard, S; Boda-Heggemann, J; Tanadini-Lang, S; Muren, L P; Clark, C H; Blanck, O (2023) Precision requirements in stereotactic arrhythmia radioablation for ventricular tachycardia. Physics and Imaging in Radiation Oncology, 28. 100508 ISSN 24056316

Nakamura, M; Zhou, D; Minemura, T; Kito, S; Okamoto, H; Tohyama, N; Kurooka, M; Kumazaki, Y; Ishikawa, M; Clark, C H; Miles, E; Lehmann, J; Andratschke, N; Kry, S; Ishikura, S; Mizowaki, T; Nishio, T (2023) A virtual audit system for intensity‐modulated radiation therapy credentialing in Japan Clinical Oncology Group clinical trials: A pilot study. Journal of Applied Clinical Medical Physics, 24 (6). e14040 ISSN 1526-9914

Taylor, P A; Miles, E; Hoffmann, L; Kelly, S M; Kry, S F; Moller, D S; Palmans, H; Akbarov, K; Aznar, M C; Clemantel, E; Corning, C; Effeney, R; Healy, B; Moore, A; Nakamura, M; Petel, S; Shaw, M; Stock, M; Lehmann, J; Clark, C H (2023) Prioritizing clinical trial quality assurance for photons and protons: A failure modes and effects analysis (FMEA) comparison. Radiotherapy and Oncology, 182. 109494

Misson-Yates, S; Cunningham, R; Gonzalez, R; Diez, P; Clark, C H (2023) Optimised conformal total body irradiation: a heterogeneous practice, so where next? The British Journal of Radiology, 96 (1144). 20220650 ISSN 0007-1285

Lehmann, J; Hussein, M; Barry, M A; Siva, S; Moore, A; Chu, M; Diez, P; Eaton, D J; Harwood, J; Lonski, P; Claridge Mackonis, E; Meehan, C; Patel, R; Ray, X; Shaw, M; Shepherd, J; Smyth, G; Standen, T S; Subramanian, B; Clark, C H (2022) SEAFARER – A new concept for validating radiotherapy patient specific QA for clinical trials and clinical practice. Radiotherapy and Oncology, 171. pp. 121-128.

Cook, H; Lambert, J; Thomas, R; Palmans, H; Hussein, M; Clark, C H; Royle, G; Pettingell, J; Lourenco, A (2022) Development of a heterogeneous phantom to measure range in clinical proton therapy beams. Physica Medica, 93. pp. 59-68.

Tait, J; Williams, T; Stacey, C F; Hussein, M; Clark, C H; Johnson, U (2021) Dose calculation validation of AAA and Acuros XB algorithms in presence of titanium spinal implants. Radiotherapy and Oncology, 161. pp. S1364-S1365.

Hussein, M; Akintonde, A; McClelland, J; Speight, R; Clark, C H (2021) Clinical use, challenges, and barriers to implementation of deformable image registration in radiotherapy - the need for guidance and QA tools. British Journal of Radiology, 94 (1122). 20210001

Kry, S F; Lye, J; Clark, C H; Andratschke, N; Dimitiadis, A; Followill, D; Howell, R; Hussein, M; Ishikawa, M; Kito, S; Kron, T; Lee, J; Michalski, J; Monti, A F; Reynaert, N; Taylor, P; Venables, K; Xiao, Y; Lehmann, J (2021) Report dose-to-medium in clinical trials where available; a consensus from the Global Harmonisation Group to maximize consistency. Radiotherapy and Oncology, 159. pp. 106-111.

Garibaldi, C; Essers, M; Heijmen, B; Bertholet, J; Koutsouveli, E; Maas, A J J; Moore, M; Petrovic, B; Koniarova, I; Lisbona, A; Piotrowski, T; Moeckli, R; Medina, A L; Markidou, E S; Clark, C H; Jornet, N (2021) Towards an updated ESTRO-EFOMP core curriculum for education and training of medical physics experts in radiotherapy - A survey of current education and training practice in Europe. Physica Medica, 84. pp. 65-71.

Axford, A; Dikaios, N; Roberts, D A; Clark, C H; Evans, P M (2021) An end-to-end assessment on the accuracy of adaptive radiotherapy in an MR-linac. Physics in Medicine & Biology, 66 (5). 055021 ISSN 0031-9155

Fiorino, C; Jeraj, R; Clark, C H; Garibaldi, C; Georg, D; Muren, L; van Elmpt, W; Bortfeld, T; Jornet, N (2021) In reply to the letter to the editor: “In reply to Fiorino et al: The central role of the radiation oncologist in the multidisciplinary and multiprofessional model of modern radiation therapy”. Radiotherapy and Oncology, 155. pp. e22-e23. ISSN 01678140

Fiorino, C; Jeraj, R; Clark, C H; Garibaldi, C; Georg, D; Muren, L; van Elmpt, W; Bortfeld, T; Jornet, N (2020) Grand challenges for medical physics in radiation oncology. Radiotherapy and Oncology, 153. pp. 7-14. ISSN 01678140

McGarry, C K; Grattan, L J; Ivory, A M; Leek, F; Liney, G P; Liu, Y; Miloro, P; Rai, R; Robinson, A P; Shih, A J; Zeqiri, B; Clark, C H (2020) Tissue mimicking materials for imaging and therapy phantoms: a review. Physics in Medicine & Biology, 65 (23). 23TR01 ISSN 0031-9155

Mir, R; Kelly, S M; Xiao, Y; Moore, A; Clark, C H; Clementel, E; Corning, C; Ebert, M; Hoskin, P; Hurkmans, C W; Ishikura, S; Kristensen, I; Kry, S F; Lehmann, J; Michalski, J M; Monti, A F; Nakamura, M; Thompson, K; Yang, H; Zubizarreta, E; Andratschke, N; Miles, E (2020) Organ at risk delineation for radiation therapy clinical trials: Global Harmonization Group consensus guidelines. Radiotherapy and Oncology, 150. pp. 30-39. ISSN 01678140

Dimitriadis, A; Tsang, Y; Thomas, R A S; Palmer, A L; Eaton, D; Lee, J; Patel, R; Silvestre Patallo, I; Gouldstone, C; Snaith, J A D; Kirkby, K J; Nisbet, A; Clark, C H (2020) Multi-institutional dosimetric delivery assessment of intracranial stereotactic radiosurgery on different treatment platforms. Radiotherapy and Oncology, 147. pp. 153-161. ISSN 01678140

Kazantsev, P; Lechner, W; Gershkevitsh, E; Clark, C H; Venencia, D; Van Dyk, J; Wesolowska, P; Hernandez, V; Jornet, N; Tomsej, M; Bokulic, T; Izewska, J (2020) IAEA methodology for on-site end-to-end IMRT/VMAT audits: an international pilot study. Acta Oncologica, 59 (2). pp. 141-148. ISSN 0284-186X

Alyahyawi, A; Dimitriadis, A; Jafari, S M; Lohstroh, A; Alanazi, A; Alsubaie, A; Clark, C H; Nisbet, A; Bradley, D A (2019) Thermoluminescence measurements of eye-lens dose in a multi-centre stereotactic radiosurgery audit. Radiation Physics and Chemistry, 155. pp. 75-81. ISSN 0969806X

Jafari, S M; Distefano, G; Lee, J; Gouldstone, C; Mayles, H; Jupp, T; Nisbet, A; Clark, C H (2017) Feasibility study of silica bead thermoluminescence detectors (TLDs) in an external radiotherapy dosimetry audit programme. Radiation Physics and Chemistry, 141. pp. 251-256.

Clark, C H; Hurkmans, C W; Kry, S F (2017) The role of dosimetry audit in lung SBRT multi-centre clinical trials. Physica Medica - European Journal of Medical Physics, 44. pp. 171-176.

Hussein, M; Clementel, E; Eaton, D J; Greer, P B; Haworth, A; Ishikura, S; Kry, S; Lehmann, J; Lye, J; Monti, A F; Nakamura, M; Hurkmans, C; Clark, C H (2017) A virtual dosimetry audit – Towards transferability of gamma index analysis between clinical trial QA groups. Radiotherapy and Oncology, 125 (3). pp. 398-404. ISSN 01678140

Dimitriadis, A; Patallo, I S; Billas, I; Duane, S; Nisbet, A; Clark, C H (2017) Characterisation of a plastic scintillation detector to be used in a multicentre stereotactic radiosurgery dosimetry audit. Radiation Physics and Chemistry, 140. pp. 373-378.

Tsapak, V; Kagadis, G C; Brambilla, M; Ciocca, M; Clark, C H; Delis, H; Mettivier, G (2017) 1st European congress of medical physics September 1-4, 2016; medical physics innovation and vision within Europe and beyond. Physica Medica - European Journal of Medical Physics, 41. pp. 1-4.

Dimitriadis, A; Palmer, A L*; Thomas, R A S; Nisbet, A*; Clark, C H (2017) Adaptation and validation of a commercial head phantom for cranial radiosurgery dosimetry end-to-end audit. Brit. J. Radiol., 90 (1074). 20170053

Hussein, M*; Clark, C H; Nisbet, A* (2017) Challenges in calculation of the gamma index in radiotherapy - towards good practice. Phys. Medica - Eur. J. Med. Phys., 36. pp. 1-11.

Distefano, G*; Lee, J*; Jafari, S*; Gouldstone, C; Baker, C*; Mayles, H*; Clark, C H (2017) A national dosimetry audit for stereotactic ablative radiotherapy in lung. Radiother. Oncol., 112 (3). pp. 406-410.

Abolaban, F*; Zaman, S*; Cashmore, J*; Nisbet, A*; Clark, C H (2016) Changes in patterns of intensity-modulated radiotherapy verification and quality assurance in the UK. Clin. Oncol., 28 (8). E28-E34

Dimitriadis, A; Kirkby, K J*; Nisbet, A*; Clark, C H (2016) Current status of cranial stereotactic radiosurgery in th UK. Brit. J. Radiol., 89 (1058). 20150452

Mcgarry, C K*; Agnew, C E*; Hussein, M*; Tsang, Y*; Mcwilliams, A*; Hounsell, A R*; Clark, C H (2016) The role of complexity metrics in a multi-institutional dosimetry audit of VMAT. Brit. J. Radiol., 89 (1057). 20150445

McGarry, C K*; Agnew, C E*; Hussein, M*; Tsang, Y*; Hounsell, A R*; Clark, C H (2016) The use of log file analysis within VMAT audits. Brit. J. Radiol., 89 (1062). 20150489

Palmer, A L*; Dimitriadis, A; Nisbet, A*; Clark, C H (2015) Evaluation of Gafchromic EBT-XD film, with comparison to EBT3 film, and application in high dose radiotherapy verification. Phys. Med. Biol., 60 (22). pp. 8741-8752.

Fiorino, C*; Muren, L P*; Clark, C H; van Elmpt, W*; Jornet, N* (2015) Expanding the scientific role of medical physics in radiotherapy: time to act. Radiother. Oncol., 117 (3). pp. 401-402.

Jafari, S M*; Jordan, T J*; Distefano, G*; Bradley, D A*; Spyrou, N M*; Nisbet, A*; Clark, C H (2015) Feasibility of using glass-bead thermoluminescent dosimeters for radiotherapy treatment plan verification. Br. J. Radiol., 88 (1055). 20140804

Clark, C H; Aird, E G A*; Bolton, S*; Miles, E A*; Nisbet, A*; Snaith, J A D; Thomas, R A S; Venables, K*; Thwaites, D I* (2015) Radiotherapy dosimetry audit: three decades of improving standards and accuracy in UK clinical practice and trials. Br. J. Radiol., 88 (1055). 20150251

Jafari, S M*; Jordan, T J*; Hussein, M*; Bradley, D A*; Clark, C H; Nisbet, A; Spyrou, N M* (2014) Energy response of glass bead TLDs irradiated with radiation therapy beams. Radiat. Phys. Chem., 104. pp. 208-211.

Jafari, S M*; Alalawi, A L*; Hussein, M*; Alsaleh, W*; Najem, M A*; Hugtenburg, R P*; Bradley, D A*; Spyrou, N M*; Clark, C H; Nisbet, A* (2014) Glass beads and Ge-doped optical fibres as thermoluminescence dosimeters for small field probe dosimetry. Phys. Med. Biol., 59 (22). pp. 6875-6889.

Melidis, C*; Bosch, W R*; Izewska, J*; Fidarova, E*; Zubizarreta, E*; Ulin, K*; Ishikura, S*; Followill, D*; Galvin, J*; Haworth, A*; Besuijen, D*; Clark, C H; Miles, E*; Aird, E*; Weber, D C*; Hurkmans, C W*; Verellen, D* (2014) Global harmonization of quality assurance naming conventions in radiation therapy clinical trials. Int. J. Radiat. Oncol. Biol. Phys., 90 (5). pp. 1242-1249.

Jafari, S M*; Bradley, D A*; Gouldstone, C A; Sharpe, P H G; Alalawi, A*; Jordan, T J*; Clark, C H; Nisbet, A*; Spyrou, N M* (2014) Low-cost commercial glass beads as dosimeters in radiotherapy. Radiat. Phys. Chem., 97. pp. 95-101.

Alalawi, A I*; Jafari, S M*; Najem, M A*; Alsaleh, W*; Clark, C H; Nisbet, A*; Abolaban, F*; Hugtenburg, R P*; Hussein, M*; Alzimami, K S*; Bradley, D A*; Spyrou, N M* (2014) Preliminary investigations of two types of silica-based dosimeter for small-field radiotherapy. Radiat. Phys. Chem., 104. pp. 139-144.

Clark, C H; Hussein, M*; Tsang, Y*; Thomas, R; Wilkinson, D*; Bass, G; Snaith, J; Gouldstone, C; Bolton, S*; Nutbrown, R; Venables, K*; Nisbet, A* (2014) A multi-institutional dosimetry audit of rotational intensity-modulated radiotherapy. Radiother. Oncol., 113 (2). pp. 272-278.

Baker, A*; Clark, C H; Ciurlionis, L*; Distefano, G*; Hatton, M*; Jain, P*; Lilley, J*; Mayles, H*; Miles, E*; Scott, A*; Webster, G* (2013) Clinical implementation of stereotactic ablative radiotherapy (SABR) for NSCLC in the UK. Lung Cancer, 79. S61.

Tsang, Y*; Ciurlionis, L*; Clark, C H; Venables, K* (2013) Development of a novel treatment planning test for credentialing rotational intensity-modulated radiotherapy techniques in the UK. Br. J. Radiol., 86 (1022). 20120315

Teoh, M*; Beveridge, S*; Wood, K*; Whitaker, S*; Adams, E*; Rickard, D*; Jordan, T*; Nisbet, A*; Clark, C H (2013) Volumetric-modulated arc therapy (RapidArc) vs. conventional fixed-field intensity-modulated radiotherapy for F-18-FDG-PET-guided dose escalation in oropharyngeal cancer: a planning study. Med. Dosim., 38 (1). pp. 18-24.

Hussein, M*; Rowshanfarzad, P*; Ebert, M A*; Nisbet, A*; Clark, C H (2013) A comparison of the gamma index analysis in various commercial IMRT/VMAT QA systems. Radiother. Oncol., 109 (3). pp. 370-376.

Hussein, M*; Adams, E J*; Jordan, T J*; Clark, C H; Nisbet, A* (2013) A critical evaluation of the PTW 2D-ARRAY seven29 and OCTAVIUS II phantom for IMRT and VMAT verification. J. Appl. Clin. Med. Phys., 14 (6). pp. 274-292.

Hussein, M*; Tsang, Y*; Thomas, R A S; Gouldstone, C; Maughan, D; Snaith, J A D; Bolton, S C*; Nisbet, A*; Clark, C H (2013) A methodology for dosimetry audit of rotational radiotherapy using a commercial detector array. Radiother. Oncol., 108 (1). pp. 78-85.

Gulliford, S L*; Miah, A B*; Brennan, S*; McQuaid, D*; Clark, C H; Partridge, M*; Harrington, K J*; Morden, J P*; Hall, E*; Nutting, C M* (2012) Dosimetric explanations of fatigue in head and neck radiotherapy: an analysis from the PARSPORT phase III trial. Radiother. Oncol., 104 (2). pp. 205-212.

Teoh, M*; Clark, C H; Wood, K*; Whitaker, S*; Nisbet, A* (2011) Volumetric modulated arc therapy: a review of current literature and clinical use in practice. Br. J. Radiol., 84 (1007). pp. 967-996.