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Leech M, Abdalqader A, Alexander S, Anderson N, Barbosa B, Callens D, Chapman V, Coffey M, Cox M, Curic I, Dean J, Denney E, Kearney M, Leung VW, Mortsiefer M, Nirgianaki E, Povilaitis J, Strikou D, Thompson K, van den Bosch M, Velec M, Woodford K, Buijs M. The Radiation Therapist profession through the lens of new technology: A practice development paper based on the ESTRO Radiation Therapist Workshops. Tech Innov Patient Support Radiat Oncol 2024; 30:100243. [PMID: 38831996 PMCID: PMC11145757 DOI: 10.1016/j.tipsro.2024.100243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 06/05/2024] Open
Abstract
Technological advances in radiation therapy impact on the role and scope of practice of the radiation therapist. The European Society of Radiotherapy and Oncology (ESTRO) recently held two workshops on this topic and this position paper reflects the outcome of this workshop, which included radiation therapists from all global regions. Workflows, quality assurance, research, IGRT and ART as well as clinical decision making are the areas of radiation therapist practice that will be highly influenced by advancing technology in the near future. This position paper captures the opportunities that this will bring to the radiation therapist profession, to the practice of radiation therapy and ultimately to patient care.
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Affiliation(s)
- Michelle Leech
- Applied Radiation Therapy Trinity, Discipline of Radiation Therapy, Trinity College Dublin, Ireland
- Trinity St. James’s Cancer Institute, Dublin, Ireland
| | | | - Sophie Alexander
- The Royal Marsden NHS Foundation Trust and The Institute of Cancer Research, Sutton, United Kingdom
| | - Nigel Anderson
- Department of Radiation Oncology, Olivia Newton-John Cancer Wellness & Research Centre - Austin Health, Heidelberg, Australia
| | - Barbara Barbosa
- Escola Internacional de Doutoramento, Universidad de Vigo, Spain
- Medical Physics, Radiobiology and Radiation Protection Group, IPO Porto Research Center (CI-IPOP), Porto Comprehensive Cancer Center (Porto.CCC) & Rise@CI-IPOP (Health Research Network), Porto, Portugal
| | - Dylan Callens
- University Hospital Leuven, Department of Radiation Oncology, Leuven, Belgium
- KU Leuven, Laboratory of Experimental Radiotherapy, Leuven, Belgium
| | | | - Mary Coffey
- Applied Radiation Therapy Trinity, Discipline of Radiation Therapy, Trinity College Dublin, Ireland
| | - Maya Cox
- Auckland City Hospital, Auckland, New Zealand
| | - Ilija Curic
- Radiosurgery and Stereotactic Radiotherapy Department, University Clinical Center of Serbia, Belgrade, Serbia
| | - Jenna Dean
- Department of Radiation Oncology, Olivia Newton-John Cancer Wellness & Research Centre - Austin Health, Heidelberg, Australia
| | | | - Maeve Kearney
- Applied Radiation Therapy Trinity, Discipline of Radiation Therapy, Trinity College Dublin, Ireland
- Trinity St. James’s Cancer Institute, Dublin, Ireland
| | - Vincent W.S. Leung
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong
| | | | | | - Justas Povilaitis
- The Hospital of Lithuanian University of Health Sciences Kauno klinikos, Kaunas, Lithuania
| | - Dimitra Strikou
- Radiation Oncology Unit, University and General Attikon Hospital, Athens, Greece
| | - Kenton Thompson
- Department of Radiation Therapy Services, Peter MacCallum Cancer Centre, Melbourne, Australia
| | | | - Michael Velec
- Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Katrina Woodford
- Department of Radiation Therapy Services, Peter MacCallum Cancer Centre, Melbourne, Australia
- Department of Medical Imaging and Radiation Sciences, Monash University, Clayton, Australia
| | - Monica Buijs
- InHolland Haarlem, University of Applied Science, Haarlem, the Netherlands
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Beckert R, Schiff JP, Morris E, Samson P, Kim H, Laugeman E. The impact of an Advanced Practice Radiation Therapist contouring for a CBCT-based adaptive radiotherapy program. Tech Innov Patient Support Radiat Oncol 2024; 30:100242. [PMID: 38495830 PMCID: PMC10940769 DOI: 10.1016/j.tipsro.2024.100242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/26/2024] [Accepted: 02/29/2024] [Indexed: 03/19/2024] Open
Abstract
We successfully implemented an APRT specializing in CBCT-guided online adaptive contouring. These data show statistical improvements in contouring time with APRT-led vs non-APRT led ART contouring, suggesting that an APRT specifically trained to manage the ART process may reduce physician workload and patient treatment time.
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Affiliation(s)
- Robbie Beckert
- Department of Radiation Oncology Washington University School of Medicine in St. Louis, 4921 Parkview Place, MSC: 35-LL-8224, St. Louis, MO 63110, United States
| | - Joshua P Schiff
- Department of Radiation Oncology Washington University School of Medicine in St. Louis, 4921 Parkview Place, MSC: 35-LL-8224, St. Louis, MO 63110, United States
| | - Eric Morris
- Department of Radiation Oncology Washington University School of Medicine in St. Louis, 4921 Parkview Place, MSC: 35-LL-8224, St. Louis, MO 63110, United States
| | - Pamela Samson
- Department of Radiation Oncology Washington University School of Medicine in St. Louis, 4921 Parkview Place, MSC: 35-LL-8224, St. Louis, MO 63110, United States
| | - Hyun Kim
- Department of Radiation Oncology Washington University School of Medicine in St. Louis, 4921 Parkview Place, MSC: 35-LL-8224, St. Louis, MO 63110, United States
| | - Eric Laugeman
- Department of Radiation Oncology Washington University School of Medicine in St. Louis, 4921 Parkview Place, MSC: 35-LL-8224, St. Louis, MO 63110, United States
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Votta C, Iacovone S, Turco G, Carrozzo V, Vagni M, Scalia A, Chiloiro G, Meffe G, Nardini M, Panza G, Placidi L, Romano A, Cornacchione P, Gambacorta MA, Boldrini L. Evaluation of clinical parallel workflow in online adaptive MR-guided Radiotherapy: A detailed assessment of treatment session times. Tech Innov Patient Support Radiat Oncol 2024; 29:100239. [PMID: 38405058 PMCID: PMC10883837 DOI: 10.1016/j.tipsro.2024.100239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/11/2024] [Accepted: 02/08/2024] [Indexed: 02/27/2024] Open
Abstract
Introduction Advancements in MRI-guided radiotherapy (MRgRT) enable clinical parallel workflows (CPW) for online adaptive planning (oART), allowing medical physicists (MPs), physicians (MDs), and radiation therapists (RTTs) to perform their tasks simultaneously. This study evaluates the impact of this upgrade on the total treatment time by analyzing each step of the current 0.35T-MRgRT workflow. Methods The time process of the workflow steps for 254 treatment fractions in 0.35 MRgRT was examined. Patients have been grouped based on disease site, breathing modality (BM) (BHI or FB), and fractionation (stereotactic body RT [SBRT] or standard fractionated long course [LC]). The time spent for the following workflow steps in Adaptive Treatment (ADP) was analyzed: Patient Setup Time (PSt), MRI Acquisition and Matching (MRt), MR Re-contouring Time (RCt), Re-Planning Time (RPt), Treatment Delivery Time (TDt). Also analyzed was the timing of treatments that followed a Simple workflow (SMP), without the online re-planning (PSt + MRt + TDt.). Results The time analysis revealed that the ADP workflow (median: 34 min) is significantly (p < 0.05) longer than the SMP workflow (19 min). The time required for ADP treatments is significantly influenced by TDt, constituting 40 % of the total time. The oART steps (RCt + RPt) took 11 min (median), representing 27 % of the entire procedure. Overall, 79.2 % of oART fractions were completed in less than 45 min, and 30.6 % were completed in less than 30 min. Conclusion This preliminary analysis, along with the comparative assessment against existing literature, underscores the potential of CPW to diminish the overall treatment duration in MRgRT-oART. Additionally, it suggests the potential for CPW to promote a more integrated multidisciplinary approach in the execution of oART.
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Affiliation(s)
- Claudio Votta
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Sara Iacovone
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Gabriele Turco
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Valerio Carrozzo
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Marica Vagni
- Università Cattolica del Sacro Cuore, Roma, Italy
| | | | - Giuditta Chiloiro
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Guenda Meffe
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Matteo Nardini
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Giulia Panza
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Lorenzo Placidi
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Angela Romano
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Patrizia Cornacchione
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
| | - Maria Antonietta Gambacorta
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
- Università Cattolica del Sacro Cuore, Roma, Italy
| | - Luca Boldrini
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Roma, Italy
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Kim J, Sung J, Lee SJ, Cho KS, Chung BH, Yang D, Kim J, Kim JW. Optimal planning target margin for prostate radiotherapy based on interfractional and intrafractional variability assessment during 1.5T MRI-guided radiotherapy. Front Oncol 2023; 13:1337626. [PMID: 38173837 PMCID: PMC10761547 DOI: 10.3389/fonc.2023.1337626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024] Open
Abstract
Introduction We analyzed daily pre-treatment- (PRE) and real-time motion monitoring- (MM) MRI scans of patients receiving definitive prostate radiotherapy (RT) with 1.5 T MRI guidance to assess interfractional and intrafractional variability of the prostate and suggest optimal planning target volume (PTV) margin. Materials and methods Rigid registration between PRE-MRI and planning CT images based on the pelvic bone and prostate anatomy were performed. Interfractional setup margin (SM) and interobserver variability (IO) were assessed by comparing the centroid values of prostate contours delineated on PRE-MRIs. MM-MRIs were used for internal margin (IM) assessment, and PTV margin was calculated using the van Herk formula. Results We delineated 400 prostate contours on PRE-MRI images. SM was 0.57 ± 0.42, 2.45 ± 1.98, and 2.28 ± 2.08 mm in the left-right (LR), anterior-posterior (AP), and superior-inferior (SI) directions, respectively, after bone localization and 0.76 ± 0.57, 1.89 ± 1.60, and 2.02 ± 1.79 mm in the LR, AP, and SI directions, respectively, after prostate localization. IO was 1.06 ± 0.58, 2.32 ± 1.08, and 3.30 ± 1.85 mm in the LR, AP, and SI directions, respectively, after bone localization and 1.11 ± 0.55, 2.13 ± 1.07, and 3.53 ± 1.65 mm in the LR, AP, and SI directions, respectively, after prostate localization. Average IM was 2.12 ± 0.86, 2.24 ± 1.07, and 2.84 ± 0.88 mm in the LR, AP, and SI directions, respectively. Calculated PTV margin was 2.21, 5.16, and 5.40 mm in the LR, AP, and SI directions, respectively. Conclusions Movements in the SI direction were the largest source of variability in definitive prostate RT, and interobserver variability was a non-negligible source of margin. The optimal PTV margin should also consider the internal margin.
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Affiliation(s)
- Jina Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jiwon Sung
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seo Jin Lee
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kang Su Cho
- Department of Urology, Prostate Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Byung Ha Chung
- Department of Urology, Prostate Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Dongjoon Yang
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jihun Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jun Won Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Li W, Padayachee J, Navarro I, Winter J, Dang J, Raman S, Kong V, Berlin A, Catton C, Glicksman R, Malkov V, McPartlin A, Kataki K, Lindsay P, Chung P. Practice-based training strategy for therapist-driven prostate MR-Linac adaptive radiotherapy. Tech Innov Patient Support Radiat Oncol 2023; 27:100212. [PMID: 37265510 PMCID: PMC10230256 DOI: 10.1016/j.tipsro.2023.100212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/19/2023] [Accepted: 05/09/2023] [Indexed: 06/03/2023] Open
Abstract
Purpose To develop a practice-based training strategy to transition from radiation oncologist to therapist-driven prostate MR-Linac adaptive radiotherapy. Methods and materials In phase 1, 7 therapists independently contoured the prostate and organs-at-risk on T2-weighted MR images from 11 previously treated MR-Linac prostate patients. Contours were evaluated quantitatively (i.e. Dice similarity coefficient [DSC] calculated against oncologist generated online contours) and qualitatively (i.e. oncologist using a 5-point Likert scale; a score ≥ 4 was deemed a pass, a 90% pass rate was required to proceed to the next phase). Phase 2 consisted of supervised online workflow with therapists required no intervention from the oncologist on 10 total cases to advance. Phase 3 involved unsupervised therapist-driven workflow, with offline support from oncologists prior to the next fraction. Results In phase 1, the mean DSC was 0.92 (range 0.85-0.97), and mean Likert score was 3.7 for the prostate. Five therapists did not attain a pass rate (3-5 cases with prostate contour score < 4), underwent follow-up one-on-one review, and performed contours on a further training set (n = 5). Each participant completed a median of 12 (range 10-13) cases in phase 2; of 82 cases, minor direction were required from the oncologist on 5 regarding target contouring. Radiation oncologists reviewed 179 treatment fractions in phase 3, and deemed 5 cases acceptable but with suggestions for next fraction; all other cases were accepted without suggestions. Conclusion A training stepwise program was developed and successfully implemented to enable a therapist-driven workflow for online prostate MR-Linac adaptive radiotherapy.
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Affiliation(s)
- Winnie Li
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Jerusha Padayachee
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Inmaculada Navarro
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Jeff Winter
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Jennifer Dang
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Srinivas Raman
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Vickie Kong
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Alejandro Berlin
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Charles Catton
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Rachel Glicksman
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Victor Malkov
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Andrew McPartlin
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Kaushik Kataki
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Patricia Lindsay
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Peter Chung
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
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McDonagh D, Tonning KL, Freeman B, Birring EJ, Dimopoulos M, Harnett N, Skubish S, Starrs C, Mei SWM, Vapiwala N, Matthews K. An Environmental Scan of Advanced Practice Radiation Therapy in the United States: A PESTEL Analysis. Int J Radiat Oncol Biol Phys 2023; 117:11-21. [PMID: 37169268 DOI: 10.1016/j.ijrobp.2023.05.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 03/23/2023] [Accepted: 05/02/2023] [Indexed: 05/13/2023]
Abstract
PURPOSE In 2021, the Advanced Practice Radiation Therapy Working Group (APRTWG) was established in the United States as a grassroots alliance of multidisciplinary radiation oncology professionals-radiation therapists, physicians, dosimetrists, and administrators-located across the country, interested in studying and establishing the Advanced Practice Radiation Therapist (APRT) level of practice in the United States. The APRT model has shown success in the United Kingdom, Canada, Australia, Singapore, and other countries, documenting the value of the APRT to the quality and advancement of clinical care. In the United States, the APRTWG seeks to coordinate activities, align resources, and drive the national agenda to collectively develop and define novel models of care using APRT in line with the evolving needs of patients and the radiation therapy profession. This environmental scan aims to examine the context of radiation oncology medical practice in the United States to inform pathways ahead for a proposed APRT model through a Political, Economic, Social, Technological, Environmental, and Legal (PESTEL) analysis. METHODS AND MATERIALS A literature search was conducted to understand the chronological timeline of the development of APRT during the past 25 years. Items that included the activities, scope of practice, and implementation of APRT nationally and internationally were identified. Papers describing advanced practitioner roles that are commonly found in the multidisciplinary team in radiation oncology both in the United States and internationally, such as physician assistants and nurse practitioners, were excluded. RESULTS Despite the environmental scan outcome, it is acknowledged that data collation and analysis was not as robust as that anticipated by undertaking a systematic review. Papers were identified by the lead author that aligned with each of the PESTEL factors. Defined broadly, a new care model can adjust how health services are delivered by incorporating best practices in patient care for a specific population, person, or patient cohort. As patients enter different stages of their disease, the purpose of a new model is to provide individuals with the right care, at the right time, by the right team, in the right place. It is clear that the opportunity for positive change and impact on the current state of practice in radiation oncology exists. CONCLUSION The environmental scan findings demonstrate the complexities associated with implementing APRT in the United States, with multifactorial political, environmental, societal, technological, economic, and legal aspects to consider. The APRTWG will continue to lead and participate in such activities to demonstrate and identify APRT role opportunities in the United States and drive the nationwide implementation of the APRT level of practice in this country.
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Affiliation(s)
| | | | | | | | | | - Nicole Harnett
- Princess Margaret Cancer Centre, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | | | | | | | - Neha Vapiwala
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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7
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Wahid KA, Lin D, Sahin O, Cislo M, Nelms BE, He R, Naser MA, Duke S, Sherer MV, Christodouleas JP, Mohamed ASR, Murphy JD, Fuller CD, Gillespie EF. Large scale crowdsourced radiotherapy segmentations across a variety of cancer anatomic sites. Sci Data 2023; 10:161. [PMID: 36949088 PMCID: PMC10033824 DOI: 10.1038/s41597-023-02062-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 03/10/2023] [Indexed: 03/24/2023] Open
Abstract
Clinician generated segmentation of tumor and healthy tissue regions of interest (ROIs) on medical images is crucial for radiotherapy. However, interobserver segmentation variability has long been considered a significant detriment to the implementation of high-quality and consistent radiotherapy dose delivery. This has prompted the increasing development of automated segmentation approaches. However, extant segmentation datasets typically only provide segmentations generated by a limited number of annotators with varying, and often unspecified, levels of expertise. In this data descriptor, numerous clinician annotators manually generated segmentations for ROIs on computed tomography images across a variety of cancer sites (breast, sarcoma, head and neck, gynecologic, gastrointestinal; one patient per cancer site) for the Contouring Collaborative for Consensus in Radiation Oncology challenge. In total, over 200 annotators (experts and non-experts) contributed using a standardized annotation platform (ProKnow). Subsequently, we converted Digital Imaging and Communications in Medicine data into Neuroimaging Informatics Technology Initiative format with standardized nomenclature for ease of use. In addition, we generated consensus segmentations for experts and non-experts using the Simultaneous Truth and Performance Level Estimation method. These standardized, structured, and easily accessible data are a valuable resource for systematically studying variability in segmentation applications.
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Affiliation(s)
- Kareem A Wahid
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Diana Lin
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Onur Sahin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Michael Cislo
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Renjie He
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Mohammed A Naser
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Simon Duke
- Department of Radiation Oncology, Cambridge University Hospitals, Cambridge, UK
| | - Michael V Sherer
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA, USA
| | - John P Christodouleas
- Department of Radiation Oncology, The University of Pennsylvania Cancer Center, Philadelphia, PA, USA
- Elekta, Atlanta, GA, USA
| | - Abdallah S R Mohamed
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - James D Murphy
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA, USA
| | - Clifton D Fuller
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
| | - Erin F Gillespie
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
- Fred Hutchinson Cancer Center, Seattle, WA, USA.
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