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Zhang Y, Jiang Z, Zhang Y, Ren L. A review on 4D cone-beam CT (4D-CBCT) in radiation therapy: Technical advances and clinical applications. Med Phys 2024; 51:5164-5180. [PMID: 38922912 PMCID: PMC11321939 DOI: 10.1002/mp.17269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 03/05/2024] [Accepted: 06/01/2024] [Indexed: 06/28/2024] Open
Abstract
Cone-beam CT (CBCT) is the most commonly used onboard imaging technique for target localization in radiation therapy. Conventional 3D CBCT acquires x-ray cone-beam projections at multiple angles around the patient to reconstruct 3D images of the patient in the treatment room. However, despite its wide usage, 3D CBCT is limited in imaging disease sites affected by respiratory motions or other dynamic changes within the body, as it lacks time-resolved information. To overcome this limitation, 4D-CBCT was developed to incorporate a time dimension in the imaging to account for the patient's motion during the acquisitions. For example, respiration-correlated 4D-CBCT divides the breathing cycles into different phase bins and reconstructs 3D images for each phase bin, ultimately generating a complete set of 4D images. 4D-CBCT is valuable for localizing tumors in the thoracic and abdominal regions where the localization accuracy is affected by respiratory motions. This is especially important for hypofractionated stereotactic body radiation therapy (SBRT), which delivers much higher fractional doses in fewer fractions than conventional fractionated treatments. Nonetheless, 4D-CBCT does face certain limitations, including long scanning times, high imaging doses, and compromised image quality due to the necessity of acquiring sufficient x-ray projections for each respiratory phase. In order to address these challenges, numerous methods have been developed to achieve fast, low-dose, and high-quality 4D-CBCT. This paper aims to review the technical developments surrounding 4D-CBCT comprehensively. It will explore conventional algorithms and recent deep learning-based approaches, delving into their capabilities and limitations. Additionally, the paper will discuss the potential clinical applications of 4D-CBCT and outline a future roadmap, highlighting areas for further research and development. Through this exploration, the readers will better understand 4D-CBCT's capabilities and potential to enhance radiation therapy.
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Affiliation(s)
- Yawei Zhang
- University of Florida Proton Therapy Institute, Jacksonville, FL 32206, USA
- Department of Radiation Oncology, University of Florida College of Medicine, Gainesville, FL 32608, USA
| | - Zhuoran Jiang
- Medical Physics Graduate Program, Duke University, Durham, NC 27710, USA
| | - You Zhang
- Department of Radiation Oncology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lei Ren
- Department of Radiation Oncology, University of Maryland, Baltimore, MD 21201, USA
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Ritchie T, Awrey S, Maganti M, Chahin R, Velec M, Hodgson DC, Dama H, Ahmed S, Winter JD, Laperriere N, Tsang DS. Paediatric radiation therapy without anaesthesia - Are the children moving? Radiother Oncol 2024; 193:110120. [PMID: 38311029 DOI: 10.1016/j.radonc.2024.110120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/16/2024] [Accepted: 01/24/2024] [Indexed: 02/06/2024]
Abstract
PURPOSE Children who require radiation therapy (RT) should ideally be treated awake, without anaesthesia, if possible. Audiovisual distraction is a known method to facilitate awake treatment, but its effectiveness at keeping children from moving during treatment is not known. The aim of this study was to evaluate intrafraction movement of children receiving RT while awake. METHODS In this prospective study, we measured the intrafraction movement of children undergoing treatment with fractionated RT, using pre- and post-RT cone beam CT (CBCT) with image matching on bony anatomy. Study CBCTs were acquired at first fraction, weekly during RT, and at last fraction. The primary endpoint was the magnitude of vector change between the pre- and post-RT scans. Our hypothesis was that 90 % of CBCT acquisitions would have minimal movement, defined as <3 mm for head-and-neck (HN) treatments and <5 mm for non-HN treatments. RESULTS A total of 65 children were enrolled and had evaluable data across 302 treatments with CBCT acquisitions. Median age was 11 years (range, 2-18; 1st and 3rd quartiles 7 and 14 years, respectively). Minimal movement was observed in 99.4 % of HN treatments and 97.2 % of non-HN treatments. The study hypothesis of >90 % of evaluations having minimal movement was met. Children who were age >11 years moved less at initial evaluation but tended to move more as a course of radiation progressed, as compared to children who were younger. CONCLUSION Children receiving RT with audiovisual distraction while awake had small magnitudes of observed intrafraction movement, with minimal movement in >97 % of observed RT fractions. This study validates methods of anaesthesia avoidance using audiovisual distraction for selected children.
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Affiliation(s)
- Tatiana Ritchie
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Susan Awrey
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Manjula Maganti
- Department of Biostatistics, Princess Margaret Cancer Centre, University Health Network, 610, University Ave, Toronto, ON, M5G 2M9, Canada
| | - Rehab Chahin
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Michael Velec
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - David C Hodgson
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Hitesh Dama
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Sameera Ahmed
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Jeff D Winter
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Normand Laperriere
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada
| | - Derek S Tsang
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, 610 University Ave, Toronto, ON, M5G 2M9, Canada.
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Liu HYH, Hardcastle N, Bailey M, Siva S, Seeley A, Barry T, Booth J, Lao L, Roach M, Buxton S, Thwaites D, Foote M. Guidelines for safe practice of stereotactic body (ablative) radiation therapy: RANZCR 2023 update. J Med Imaging Radiat Oncol 2023. [PMID: 38160448 DOI: 10.1111/1754-9485.13618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 12/17/2023] [Indexed: 01/03/2024]
Affiliation(s)
- Howard Yu-Hao Liu
- Department of Cancer Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- ICON Cancer Centre, Greenslopes Private Hospital, Brisbane, Queensland, Australia
| | | | - Michael Bailey
- Illawarra Cancer Care Centre, Wollongong, New South Wales, Australia
| | - Shankar Siva
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Anna Seeley
- North West Cancer Centre, Burnie, Tasmania, Australia
| | - Tamara Barry
- Department of Cancer Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
| | - Jeremy Booth
- Northern Sydney Cancer Centre, Royal North Shore Hospital, Sydney, New South Wales, Australia
- Institute of Medical Physics, School of Physics, University of Sydney, Sydney, New South Wales, Australia
| | - Louis Lao
- Auckland City Hospital, Auckland, New Zealand
- Auckland Radiation Oncology, Auckland, New Zealand
| | - Michelle Roach
- Liverpool Cancer Therapy Centre, Sydney, New South Wales, Australia
| | - Stacey Buxton
- Liverpool Cancer Therapy Centre, Sydney, New South Wales, Australia
| | - David Thwaites
- Institute of Medical Physics, School of Physics, University of Sydney, Sydney, New South Wales, Australia
- Crown Princess Mary Cancer Centre, Westmead Hospital, Sydney, New South Wales, Australia
| | - Matthew Foote
- Department of Cancer Services, Princess Alexandra Hospital, Brisbane, Queensland, Australia
- ICON Cancer Centre, Greenslopes Private Hospital, Brisbane, Queensland, Australia
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Hardcastle N, Gaudreault M, Yeo AU, Ungureanu E, Markham C, Barnes R, Chander S, Chu J. Selection of motion management in liver stereotactic body radiotherapy and its impact on treatment time. Phys Imaging Radiat Oncol 2023; 25:100407. [PMID: 36655214 PMCID: PMC9841271 DOI: 10.1016/j.phro.2022.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/30/2022] [Accepted: 12/22/2022] [Indexed: 01/05/2023] Open
Abstract
Background and purpose Reduction of respiratory tumour motion is important in liver stereotactic body radiation therapy (SBRT) to reduce side effects and improve tumour control probability. We have assessed the distribution of use of voluntary exhale breath hold (EBH), abdominal compression (AC), free breathing gating (gating) and free breathing (FB), and the impact of these on treatment time. Materials and Methods We assessed all patients treated in a single institution with liver SBRT between September 2017 and September 2021. Data from pre-simulation motion management assessment using fluoroscopic assessment of liver dome position in repeat breath holds, and motion with and without AC, was reviewed to determine liver dome position consistency in EBH and the impact of AC on motion. Treatment time was assessed for all fractions as time from first image acquisition to last treatment beam off. Results Of 136 patients treated with 145 courses of liver SBRT, 68 % were treated in EBH, 20 % with AC, 7 % in gating and 5 % in FB. AC resulted in motion reduction < 1 mm in 9/26 patients assessed. Median treatment time was higher using EBH (39 min) or gating (42 min) compared with AC (30 min) or FB (24 min) treatments. Conclusions Motion management in liver SBRT needs to be assessed per-patient to ensure appropriate techniques are applied. Motion management significantly impacts treatment time therefore patient comfort must also be taken into account when selecting the technique for each patient.
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Key Words
- AC, Abdominal Compression
- Abdominal compression
- BED, Biologically Effective Dose
- CBCT, Cone Beam Computed Tomography
- EBH, Exhale Breath Hold
- FB, Free Breathing
- FFF, Flattening Filter Free
- GTV, Gross Tumor Volume
- IMRT, Intensity Modulated Radiation Therapy
- ITV, Internal Target Volume
- Liver
- Motion management
- PTV, Planning Target Volume
- SBRT, Stereotactic body radiation thearpy
- Stereotactic body radiation therapy
- VMAT, Volumetric Modulated Arc Therapy
- exhale breath hold. Stereotactic ablative body radiotherapy
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Affiliation(s)
- Nicholas Hardcastle
- Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
- Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
- Corresponding author.
| | - Mathieu Gaudreault
- Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
| | - Adam U. Yeo
- Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Elena Ungureanu
- Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Cathy Markham
- Department of Radiation Therapy, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Rebecca Barnes
- Department of Radiation Therapy, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Sarat Chander
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Julie Chu
- Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
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Daly M, McWilliam A, Radhakrishna G, Choudhury A, Eccles CL. Radiotherapy respiratory motion management in hepatobiliary and pancreatic malignancies: a systematic review of patient factors influencing effectiveness of motion reduction with abdominal compression. Acta Oncol 2022; 61:833-841. [PMID: 35611555 DOI: 10.1080/0284186x.2022.2073186] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 04/28/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND The effectiveness of abdominal compression for motion management in hepatobiliary-pancreatic (HPB) radiotherapy has not been systematically evaluated. METHODS & MATERIALS A systematic review was carried out using PubMed/Medline, Cochrane Library, Web of Science, and CINAHL databases up to 1 July 2021. No date restrictions were applied. Additional searches were carried out using the University of Manchester digital library, Google Scholar and of retrieved papers' reference lists. Studies conducted evaluating respiratory motion utilising imaging with and without abdominal compression in the same patients available in English were included. Studies conducted in healthy volunteers or majority non-HPB sites, not providing descriptive motion statistics or patient characteristics before and after compression in the same patients or published without peer-review were excluded. A narrative synthesis was employed by tabulating retrieved studies and organising chronologically by abdominal compression device type to help identify patterns in the evidence. RESULTS The inclusion criteria were met by 6 studies with a total of 152 patients. Designs were a mix of retrospective and prospective quantitative designs with chronological, non-randomised recruitment. Abdominal compression reduced craniocaudal respiratory motion in the majority of patients, although in four studies there were increases seen in at least one direction. The influence of patient comorbidities on effectiveness of compression, and/or comfort with compression was not evaluated in any study. CONCLUSION Abdominal compression may not be appropriate for all patients, and benefit should be weighed with potential increase in motion or discomfort in patients with small initial motion (<5 mm). Patient factors including male sex, and high body mass index (BMI) were found to impact the effectiveness of compression, however with limited evidence. High-quality studies are warranted to fully assess the clinical impact of abdominal compression on treatment outcomes and toxicity prospective in comparison to other motion management strategies.
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Affiliation(s)
- Mairead Daly
- Division of Clinical Cancer Sciences, Faculty of Biology, Medicine and Health, School of Medical Sciences, The University of Manchester, Manchester, United Kingdom
| | - Alan McWilliam
- Division of Clinical Cancer Sciences, Faculty of Biology, Medicine and Health, School of Medical Sciences, The University of Manchester, Manchester, United Kingdom
- The Christie NHSFT, Manchester, United Kingdom
| | | | - Ananya Choudhury
- Division of Clinical Cancer Sciences, Faculty of Biology, Medicine and Health, School of Medical Sciences, The University of Manchester, Manchester, United Kingdom
- The Christie NHSFT, Manchester, United Kingdom
| | - Cynthia L Eccles
- Division of Clinical Cancer Sciences, Faculty of Biology, Medicine and Health, School of Medical Sciences, The University of Manchester, Manchester, United Kingdom
- The Christie NHSFT, Manchester, United Kingdom
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Lee M, Simeonov A, Stanescu T, Dawson LA, Brock KK, Velec M. MRI evaluation of normal tissue deformation and breathing motion under an abdominal compression device. J Appl Clin Med Phys 2021; 22:90-97. [PMID: 33449447 PMCID: PMC7882116 DOI: 10.1002/acm2.13165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 11/12/2022] Open
Abstract
Purpose Abdominal compression can minimize breathing motion in stereotactic radiotherapy, though it may impact the positioning of dose‐limiting normal tissues. This study quantified the reproducibility of abdominal normal tissues and respiratory motion with the use of an abdominal compression device using MR imaging. Methods Twenty healthy volunteers had repeat MR over 3 days under an abdominal compression plate device. Normal tissues were delineated on daily axial T2‐weighted MR and compared on days 2 and 3 relative to day 1, after adjusting for baseline shifts relative to bony anatomy. Inter‐fraction organ deformation was computed using deformable registration of axial T2 images. Deformation > 5 mm was assumed to be clinically relevant. Inter‐fraction respiratory amplitude changes and intra‐fraction baseline drifts during imaging were quantified on daily orthogonal cine‐MR (70 s each), and changes > 3 mm were assumed to be relevant. Results On axial MR, the mean inter‐fraction normal tissue deformation was > 5 mm for all organs (range 5.1–13.4 mm). Inter‐fraction compression device misplacements > 5 mm and changes in stomach volume > 50% occurred at a rate of 93% and 38%, respectively, in one or more directions and were associated with larger adjacent organ deformation, in particular for the duodenum. On cine‐MR, inter‐fraction amplitude changes > 3 mm on day 2 and 3 relative to day 1 occurred at a rate of < 12.5% (mean superior–inferior change was 1.6 mm). Intra‐fraction baseline drifts > 3 mm during any cine‐MR acquisition occurred at a rate of 23% (mean superior–inferior changes was 2.4 mm). Conclusions Respiratory motion under abdominal compression is reproducible in most subjects within 3 mm. However, inter‐fraction deformations greater than 5 mm in normal tissues were common and larger than inter‐ and intra‐fraction respiratory changes. Deformations were driven mostly by variable stomach contents and device positioning. The magnitude of this motion may impact normal tissue dosimetry during stereotactic radiotherapy.
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Affiliation(s)
- Maureen Lee
- Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, 610 University Avenue, Toronto, ON, M5G 2M9, Canada
| | - Anna Simeonov
- Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, 610 University Avenue, Toronto, ON, M5G 2M9, Canada
| | - Teo Stanescu
- Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, 610 University Avenue, Toronto, ON, M5G 2M9, Canada.,TECHNA Institute, University Health Network, 100 College Street, Toronto, ON, M5G 1L5, Canada
| | - Laura A Dawson
- Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, 610 University Avenue, Toronto, ON, M5G 2M9, Canada
| | - Kristy K Brock
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Michael Velec
- Department of Radiation Oncology, Princess Margaret Cancer Centre, University Health Network, University of Toronto, 610 University Avenue, Toronto, ON, M5G 2M9, Canada.,TECHNA Institute, University Health Network, 100 College Street, Toronto, ON, M5G 1L5, Canada
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Pham D, Kron T, Bressel M, Foroudi F, Hardcastle N, Schneider M, Soteriou S, Innes J, Siva S. Image guidance and stabilization for stereotactic ablative body radiation therapy (SABR) treatment of primary kidney cancer. Pract Radiat Oncol 2015; 5:e597-605. [PMID: 26547828 DOI: 10.1016/j.prro.2015.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/10/2015] [Accepted: 08/14/2015] [Indexed: 10/23/2022]
Abstract
PURPOSE Stereotactic ablative body radiation therapy for primary kidney cancer treatment relies on motion management that can quantify both the trajectory of kidney motion and stabilize the patient. A prospective ethics-approved clinical trial of stereotactic treatment to primary kidney targets was conducted at our institution. Our aim was to report on specific kidney tumor motion and the inter- and intrafraction motion as seen on treatment. METHODS AND MATERIALS Patients with tumor size <5 cm received a dose of 26 Gy in 1 fraction and those with tumor size ≥5 cm received 42 Gy in 3 fractions. All patients underwent a 4-dimensional computed tomography planning scan, immobilized in a dual-vacuum system. A conventional linear accelerator cone beam computed tomography scan was used for pre-, mid-, and posttreatment imaging to verify target position. RESULTS Between July 2012 and October 2014, 33 targets from 32 consecutive patients (24 males/8 females) were treated. Seventeen targets were prescribed 26 Gy/1 fraction and the remaining 16 targets received 42 Gy/3 fractions. Kidney motion at each of the poles was not affected by the presence of tumor (P = .875), nor was the motion statistically different from the corresponding contralateral kidney pole (P = .909). The mean 3-dimensional displacement of the target at mid- and posttreatment was 1.3 mm (standard deviation ± 1.6) and 1.0 mm (standard deviation ± 1.3), respectively. The maximum displacement in any direction for 95% of the fractions at mid- and posttreatment was ≤3 mm. CONCLUSION In summary, stereotactic ablative body radiation therapy of primary kidney targets can be accurately delivered on a conventional linear accelerator with protocol that has minimal intrafractional target motion.
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Affiliation(s)
- Daniel Pham
- Department of Radiation Therapy Services, Peter MacCallum Cancer Centre, Melbourne, Australia; Department of Medical Imaging and Radiation Sciences, Monash University, Melbourne, Australia.
| | - Tomas Kron
- Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia
| | - Mathias Bressel
- Department of Biostatistics and Clinical Trials, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Farshad Foroudi
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia; Department of Radiation Oncology, Olivia Newton-John Cancer Centre/Austin Health, Melbourne, Australia
| | - Nicholas Hardcastle
- Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Michal Schneider
- Department of Medical Imaging and Radiation Sciences, Monash University, Melbourne, Australia
| | - Sally Soteriou
- Department of Radiation Therapy Services, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Jayson Innes
- Department of Radiation Therapy Services, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Shankar Siva
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Australia; Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, Australia
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