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Refsgaard L, Skarsø Buhl E, Yates E, Maae E, Berg M, Al-Rawi S, Saini A, Vestmø Maraldo M, Boye K, Louise Holm Milo M, Jensen I, Wichmann Matthiessen L, Nørring Bekke S, Holck Nielsen M, Laugaard Lorenzen E, Bech Jellesmark Thorsen L, Sofia Korreman S, Vrou Offersen B. Evaluating Danish Breast Cancer Group locoregional radiotherapy guideline adherence in clinical treatment data 2008-2016: The DBCG RT Nation study. Radiother Oncol 2024; 199:110289. [PMID: 38944554 DOI: 10.1016/j.radonc.2024.110289] [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: 12/21/2023] [Revised: 04/04/2024] [Accepted: 04/15/2024] [Indexed: 07/01/2024]
Abstract
BACKGROUND AND PURPOSE Guideline adherence in radiotherapy is crucial for maintaining treatment quality and consistency, particularly in non-trial patient settings where most treatments occur. The study aimed to assess the impact of guideline changes on treatment planning practices and compare manual registry data accuracy with treatment planning data. MATERIALS AND METHODS This study utilised the DBCG RT Nation cohort, a collection of breast cancer radiotherapy data in Denmark, to evaluate adherence to guidelines from 2008 to 2016. The cohort included 7448 high-risk breast cancer patients. National guideline changes included, fractionation, introduction of respiratory gating, irradiation of the internal mammary lymph nodes, use of the simultaneous integrated boost technique and inclusion of the Left Anterior Descending coronary artery in delineation practice. Methods for structure name mapping, laterality detection, detection of temporal changes in population mean lung volume, and dose evaluation were presented and applied. Manually registered treatment characteristic data was obtained from the Danish Breast Cancer Database for comparison. RESULTS The study found immediate and consistent adherence to guideline changes across Danish radiotherapy centres. Treatment practices before guideline implementation were documented and showed a variation among centres. Discrepancies between manual registry data and actual treatment planning data were as high as 10% for some measures. CONCLUSION National guideline changes could be detected in the routine treatment data, with a high degree of compliance and short implementation time. Data extracted from treatment planning data files provides a more accurate and detailed characterisation of treatments and guideline adherence than medical register data.
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Affiliation(s)
- Lasse Refsgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
| | - Emma Skarsø Buhl
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Esben Yates
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Else Maae
- Department of Oncology, Vejle Hospital, University Hospital of Southern Denmark, Denmark
| | - Martin Berg
- Department of Oncology, Vejle Hospital, University Hospital of Southern Denmark, Denmark
| | - Sami Al-Rawi
- Department of Oncology, Zealand University Hospital, Department of Clinical Oncology and Palliative Care, Næstved, Denmark
| | - Abhilasha Saini
- Department of Oncology, Zealand University Hospital, Department of Clinical Oncology and Palliative Care, Næstved, Denmark
| | - Maja Vestmø Maraldo
- Department of Oncology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Kristian Boye
- Department of Oncology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Marie Louise Holm Milo
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Ingelise Jensen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | | | - Susanne Nørring Bekke
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Mette Holck Nielsen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark; Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Ebbe Laugaard Lorenzen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Lise Bech Jellesmark Thorsen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark; Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Stine Sofia Korreman
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Birgitte Vrou Offersen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark; Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
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Kristensen MH, Holm AIS, Hansen CR, Zukauskaite R, Samsøe E, Maare C, Johansen J, Primdahl H, Bratland Å, Kristensen CA, Andersen M, Overgaard J, Eriksen JG. High-dose loco-regional pattern of failure after primary radiotherapy in p16 positive and negative head and neck squamous cell carcinoma - A DAHANCA 19 study. Clin Transl Radiat Oncol 2024; 46:100772. [PMID: 38596816 PMCID: PMC11002542 DOI: 10.1016/j.ctro.2024.100772] [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: 12/07/2023] [Revised: 02/28/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024] Open
Abstract
Introduction Patients with failure after primary radiotherapy (RT) for head and neck squamous cell carcinoma (HNSCC) have a poor prognosis. This study investigates pattern of failure after primary curatively intended IMRT in a randomized controlled trial in relation to HPV/p16 status. Material and methods Patients with HNSCC of the oral cavity, oropharynx (OPSCC), hypopharynx or larynx were treated with primary curative IMRT (+/-cisplatin) and concomitant nimorazole between 2007 and 12. Of 608 patients, 151 had loco-regional failure within five years, from whom 130 pairs of scans (planning-CT and diagnostic failure scan) were collected and deformably co-registered. Point of origin-based pattern of failure analysis was conducted, including distance to CTV1 and GTV, and estimated dose coverage of the point of origin. Results Of 130 patients with pairs of scans, 104 (80 %) had at least one local or regional failure site covered by 95 % of prescribed dose and 87 (67 %) of the failures had point of origin within the high-dose CTV (CTV1). Of failures from primary p16 + OPSCC, the majority of both mucosal (84 %) and nodal (61 %) failures were covered by curative doses. For p16- tumors (oral cavity, OPSCC p16neg, hypopharynx and larynx), 75 % of mucosal and 66 % of nodal failures were high-dose failures. Conclusion Radioresistance is the primary cause of failure after RT for HNSCC irrespective of HPV/p16 status. Thus, focus on predictors for the response to RT is warranted to identify patients with higher risk of high-dose failure that might benefit from intensified treatment regimens.
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Affiliation(s)
- Morten Horsholt Kristensen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Anne Ivalu Sander Holm
- Department of Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Christian Rønn Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
- Danish Centre for Particle Therapy, Aarhus University Hospital, Palle Juul-Jensens Boulevard 25, 8200 Aarhus N, Denmark
- Department of Clinical Research, University of Southern Denmark, Sdr. Boulevard 29, 5000 Odense C, Denmark
| | - Ruta Zukauskaite
- Department of Oncology, Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
| | - Eva Samsøe
- Department of Oncology, Zealand University Hospital, Rådmandsengen 5, 4700 Næstved, Denmark
| | - Christian Maare
- Department of Oncology, Copenhagen University Hospital – Herlev, Borgmester Ib Juuls Vej 1, 2730 Herlev, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
| | - Hanne Primdahl
- Department of Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Åse Bratland
- Department of Oncology, Oslo University Hospital, Ullernchausseen 70, 0372 Oslo, Norway
| | - Claus Andrup Kristensen
- Department of Oncology, Copenhagen University Hospital – Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark
| | - Maria Andersen
- Department of Oncology, Aalborg University Hospital, Hobrovej 18, 9000 Aalborg, Denmark
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
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Olloni A, Brink C, Lorenzen EL, Jeppesen SS, Hofmann L, Kristiansen C, Knap MM, Møller DS, Nygård L, Persson GF, Thing RS, Sand HMB, Diederichsen A, Schytte T. Heart and Lung Dose as Predictors of Overall Survival in Patients With Locally Advanced Lung Cancer. A National Multicenter Study. JTO Clin Res Rep 2024; 5:100663. [PMID: 38590728 PMCID: PMC10999485 DOI: 10.1016/j.jtocrr.2024.100663] [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: 09/05/2023] [Revised: 01/21/2024] [Accepted: 03/07/2024] [Indexed: 04/10/2024] Open
Abstract
Introduction It is an ongoing debate how much lung and heart irradiation impact overall survival (OS) after definitive radiotherapy for lung cancer. This study uses a large national cohort of patients with locally advanced NSCLC to investigate the association between OS and irradiation of lung and heart. Methods Treatment plans were acquired from six Danish radiotherapy centers, and patient characteristics were obtained from national registries. A hybrid segmentation tool automatically delineated the heart and substructures. Dose-volume histograms for all structures were extracted and analyzed using principal component analyses (PCAs). Parameter selection for a multivariable Cox model for OS prediction was performed using cross-validation based on bootstrapping. Results The population consisted of 644 patients with a median survival of 26 months (95% confidence interval [CI]: 24-29). The cross-validation selected two PCA variables to be included in the multivariable model. PCA1 represented irradiation of the heart and affected OS negatively (hazard ratio, 1.14; 95% CI: 1.04-1.26). PCA2 characterized the left-right balance (right atrium and left ventricle) irradiation, showing better survival for tumors near the right side (hazard ratio, 0.92; 95% CI: 0.84-1.00). Besides the two PCA variables, the multivariable model included age, sex, body-mass index, performance status, tumor dose, and tumor volume. Conclusions Besides the classic noncardiac risk factors, lung and heart doses had a negative impact on survival, while it is suggested that the left side of the heart is a more radiation dose-sensitive region. The data indicate that overall heart irradiation should be reduced to improve the OS if possible.
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Affiliation(s)
- Agon Olloni
- Department of Oncology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark
| | - Carsten Brink
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Ebbe Laugaard Lorenzen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Stefan Starup Jeppesen
- Department of Oncology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, Odense, Denmark
| | - Lone Hofmann
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark
| | - Charlotte Kristiansen
- Department of Oncology, Vejle Hospital, University Hospital of Southern Denmark, Vejle, Denmark
| | | | - Ditte Sloth Møller
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark
| | - Lotte Nygård
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Gitte Fredberg Persson
- Department of Oncology, Herlev and Gentofte Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
| | - Rune Slot Thing
- Department of Oncology, Vejle Hospital, University Hospital of Southern Denmark, Vejle, Denmark
| | | | - Axel Diederichsen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | - Tine Schytte
- Department of Oncology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
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Krogh SL, Brink C, Lorenzen EL, Samsøe E, Vogelius IR, Zukauskaite R, Vrou Offersen B, Eriksen JG, Hansen O, Johansen J, Olloni A, Ruhlmann CH, Hoffmann L, Nissen HD, Skovmos Nielsen M, Andersen K, Grau C, Hansen CR. A national repository of complete radiotherapy plans: design, Results, and experiences. Acta Oncol 2023; 62:1161-1168. [PMID: 37850659 DOI: 10.1080/0284186x.2023.2270143] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 10/04/2023] [Indexed: 10/19/2023]
Abstract
BACKGROUND Previously, many radiotherapy (RT) trials were based on a few selected dose measures. Many research questions, however, rely on access to the complete dose information. To support such access, a national RT plan database was created. The system focuses on data security, ease of use, and re-use of data. This article reports on the development and structure, and the functionality and experience of this national database. METHODS AND MATERIALS A system based on the DICOM-RT standard, DcmCollab, was implemented with direct connections to all Danish RT centres. Data is segregated into any number of collaboration projects. User access to the system is provided through a web interface. The database has a finely defined access permission model to support legal requirements. RESULTS Currently, data for more than 14,000 patients have been submitted to the system, and more than 50 research projects are registered. The system is used for data collection, trial quality assurance, and audit data set generation.Users reported that the process of submitting data, waiting for it to be processed, and then manually attaching it to a project was resource intensive. This was accommodated with the introduction of triggering features, eliminating much of the need for users to manage data manually. Many other features, including structure name mapping, RT plan viewer, and the Audit Tool were developed based on user input. CONCLUSION The DcmCollab system has provided an efficient means to collect and access complete datasets for multi-centre RT research. This stands in contrast with previous methods of collecting RT data in multi-centre settings, where only singular data points were manually reported. To accommodate the evolving legal environment, DcmCollab has been defined as a 'data processor', meaning that it is a tool for other research projects to use rather than a research project in and of itself.
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Affiliation(s)
- Simon Long Krogh
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Carsten Brink
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Ebbe Laugaard Lorenzen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Eva Samsøe
- Department of Oncology, Radiotherapy, Zealand University Hospital, Naestved, Denmark
| | | | - Ruta Zukauskaite
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Birgitte Vrou Offersen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Danish Center for Particle Therapy, Aarhus, Denmark
| | - Jesper Grau Eriksen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Olfred Hansen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Jørgen Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Agon Olloni
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | | | - Lone Hoffmann
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Henrik Dahl Nissen
- Department of Oncology, University Hospital of Southern Denmark, Vejle, Denmark
| | | | - Karen Andersen
- Department of Oncology, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark
| | - Cai Grau
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Christian Rønn Hansen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Danish Center for Particle Therapy, Aarhus, Denmark
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5
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Olloni A, Brink C, Lorenzen EL, Jeppesen SS, Hoffmann L, Kristiansen C, Knap MM, Møller DS, Nygård L, Persson GF, Thing RS, Sand HM, Diederichsen A, Schytte T. Does coronary artery calcium score have an impact on overall survival for locally advanced non-small cell lung cancer treated with definitive radiotherapy. Radiother Oncol 2023; 185:109719. [PMID: 37257588 DOI: 10.1016/j.radonc.2023.109719] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/03/2023] [Accepted: 05/17/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND AND PURPOSE Coronary artery calcium score (CACs) is an excellent marker for survival in non-cancer patients, but its role in locally advanced non-small cell lung cancer (LA-NSCLC) patients remains uncertain. In this study, we hypothesize that CACs is a prognostic marker for survival in a competing risk analysis in LA-NSCLC patients treated with definitive radiotherapy. MATERIALS AND METHODS We included 644 patients with LA-NSCLC treated in 2014-2015 in Denmark. Baseline patient characteristics were derived from the Danish Lung Cancer Registry. Radiotherapy planning CT scans were used for manual CACs measurements, and the patients were divided into four groups, CACs 0, 1-99, 100-399, and ≥400. A multivariable Cox model utilizing bootstrapping for cross-validation modeled overall survival (OS). RESULTS The median follow-up time was seven years, and the median OS was 26 months (95% CI 24-29). Within each CAC group 0, 1-99, 100-399, and ≥400 were 172, 182, 143, and 147 patients, respectively. In the univariable analysis, the survival decreased with increasing CACs. However, after adjustment for age, PS, radiotherapy dose, and logarithmic GTV, CACs did not have a statistically significant impact on OS with hazard ratios of 1.04 (95% CI 0.85-1.28), 1.11 (95%CI 0.89-1.43), and 1.16 (95%CI 0.92-1.47) for CACs 1-99, CACs 100-399 and ≥400, respectively. Elevated CACs was observed in 73 % of the patients suggesting a high risk of cardiac comorbidity before radiotherapy. CONCLUSION CACs did not add prognostic information to our population's classical risk factors, such as tumor volume, performance status, and age; the lung cancer has the highest priority despite the risk of baseline cardiac comorbidity.
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Affiliation(s)
- Agon Olloni
- Department of Oncology, Odense University Hospital, 5000 Odense C, Denmark; Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark; Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, 5000 Odense C, Denmark.
| | - Carsten Brink
- Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark; Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, 5000 Odense C, Denmark.
| | - Ebbe L Lorenzen
- Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark; Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, 5000 Odense C, Denmark.
| | - Stefan S Jeppesen
- Department of Oncology, Odense University Hospital, 5000 Odense C, Denmark; Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark; Academy of Geriatric Cancer Research (AgeCare), Odense University Hospital, 5000 Odense C, Denmark
| | - Lone Hoffmann
- Department of Oncology, Aarhus University Hospital, 8200 Aarhus N, Denmark; Department of Clinical Medicine, Faculty of Health Sciences, Aarhus University, 8200 Aarhus N, Denmark.
| | - Charlotte Kristiansen
- Department of Oncology, University Hospital of Southern Denmark, 7100 Vejle, Denmark.
| | - Marianne M Knap
- Department of Oncology, Aarhus University Hospital, 8200 Aarhus N, Denmark.
| | - Ditte S Møller
- Department of Oncology, Aarhus University Hospital, 8200 Aarhus N, Denmark.
| | - Lotte Nygård
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, 2100 København Ø, Denmark.
| | - Gitte F Persson
- Department of Oncology, Copenhagen University Hospital, , 2730 Herlev, Denmark; Department of Clinical Medicine, Copenhagen University, 2730 Herlev, Denmark.
| | - Rune S Thing
- Department of Oncology, University Hospital of Southern Denmark, 7100 Vejle, Denmark.
| | - Hella Mb Sand
- Department of Medical Physics, Aalborg University Hospital, 9000 Aalborg, Denmark.
| | - Axel Diederichsen
- Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark; Department of Cardiology, Odense University Hospital, 5000 Odense C, Denmark.
| | - Tine Schytte
- Department of Oncology, Odense University Hospital, 5000 Odense C, Denmark; Department of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark.
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Refsgaard L, Skarsø ER, Ravkilde T, Nissen HD, Olsen M, Boye K, Laursen KL, Bekke SN, Lorenzen EL, Brink C, Thorsen LBJ, Offersen BV, Korreman SS. End-to-end framework for automated collection of large multicentre radiotherapy datasets demonstrated in a Danish Breast Cancer Group cohort. Phys Imaging Radiat Oncol 2023; 27:100485. [PMID: 37705727 PMCID: PMC10495662 DOI: 10.1016/j.phro.2023.100485] [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: 04/28/2023] [Revised: 08/18/2023] [Accepted: 08/18/2023] [Indexed: 09/15/2023] Open
Abstract
Large Digital Imaging and Communications in Medicine (DICOM) datasets are key to support research and the development of machine learning technology in radiotherapy (RT). However, the tools for multi-centre data collection, curation and standardisation are not readily available. Automated batch DICOM export solutions were demonstrated for a multicentre setup. A Python solution, Collaborative DICOM analysis for RT (CORDIAL-RT) was developed for curation, standardisation, and analysis of the collected data. The setup was demonstrated in the DBCG RT-Nation study, where 86% (n = 7748) of treatments in the inclusion period were collected and quality assured, supporting the applicability of the end-to-end framework.
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Affiliation(s)
- Lasse Refsgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Emma Riis Skarsø
- Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Thomas Ravkilde
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Henrik Dahl Nissen
- Department of Oncology, Vejle Hospital, University Hospital of Southern Denmark, Denmark
| | - Mikael Olsen
- Department of Oncology, Zealand University Hospital, Department of Clinical Oncology and Palliative Care, Næstved, Denmark
| | - Kristian Boye
- Department of Oncology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Kasper Lind Laursen
- Department of Medical Physics, Aalborg University Hospital, Aalborg, Denmark
| | - Susanne Nørring Bekke
- Department of Oncology, Copenhagen University Hospital – Herlev and Gentofte, Copenhagen, Denmark
| | - Ebbe Laugaard Lorenzen
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Carsten Brink
- Laboratory of Radiation Physics, Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Lise Bech Jellesmark Thorsen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Birgitte Vrou Offersen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Denmark
- Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Stine Sofia Korreman
- Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Volume matters: Breast induration is associated with irradiated breast volume in the Danish Breast Cancer Group phase III randomized Partial Breast Irradiation trial. Radiother Oncol 2022; 177:231-235. [PMID: 36265685 DOI: 10.1016/j.radonc.2022.09.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/22/2022] [Accepted: 09/29/2022] [Indexed: 11/07/2022]
Abstract
PURPOSE The relation between breast induration grade 2-3 at 3 years after radiation therapy and irradiated breast volume was investigated for patients in the Danish Breast Cancer Group (DBCG) Partial Breast Irradiation (PBI) trial. METHODS Treatment plan data was obtained from the Danish radiotherapy plan database. Dosimetric parameters for breast and organs at risk were determined. Breast induration data was obtained from the DBCG database. The volume of the whole breast (CTVp_breast) treated to various dose levels was determined for treatment plans in both arms. Logistic regression was used to assess the frequency of induration on breast volume irradiated to ≥40 Gy. RESULTS PBI and WBI was given to 433 and 432 patients, respectively. Median and interquartile ranges (IQR) for CTVp_breast were 710 mL (467-963 mL; PBI) and 666 mL (443-1012 mL; WBI) (p = 0.98). Median and IQR for CTVp_breast treated to ≥40 Gy was 24.9% (18.6-32.6%; PBI) and 59.8% (53.6-68.5%; WBI). Grade 2-3 induration was observed in 5% (PBI) and 10% (WBI) of the patients. A dose-response relationship was established between irradiated breast volume and frequency of breast induration. From the model, 5% and 10% risks of breast induration were observed for ≥40 Gy delivered to CTVp_breast volumes of 177 mL (95%CI, 94-260 mL) and 426 mL (95%CI, 286-567 mL), respectively. CONCLUSION The frequency of breast induration increased significantly with increasing irradiated breast volume, strongly favouring small volumes and PBI. Thus, treated breast volume - not the breast size itself - is the risk factor for induration. This is the first report directly linking the 40 Gy irradiated breast volume to breast induration.
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Co-registration of radiotherapy planning and recurrence scans with different imaging modalities in head and neck cancer. Phys Imaging Radiat Oncol 2022; 23:80-84. [PMID: 35844257 PMCID: PMC9284447 DOI: 10.1016/j.phro.2022.06.012] [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: 02/11/2022] [Revised: 06/24/2022] [Accepted: 06/27/2022] [Indexed: 11/30/2022] Open
Abstract
Head and neck magnetic resonance imaging and computed tomography co-registration. Validation of planning and recurrence scan co-registration separated in time. Mean distances to agreement for regions of interest/normal tissue were tolerable.
MRI (magnetic resonance imaging) scans are frequently used in follow-up after radiotherapy for head and neck cancer. With the overall aim of enabling MRI-based pattern of failure analysis, this study evaluated the accuracy of recurrence MRI (rMRI) deformable co-registration with planning CT (computed tomography)-scans (pCT). Uncertainty of anatomical changes between pCT and rMRI was assessed by similarity metric analyses of co-registered image structures from 19 patients. Average mean distance to agreement and Dice similarity coefficient performed adequately. Our findings provide proof of concept for reliable co-registration of pCT and rMRI months to years apart for MRI-based pattern of failure analysis.
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Prionas ND, Stephens SJ, Blitzblau RC. Early-stage Breast Cancer: Tailored External Beam Fractionation Approaches for Treatment of the Whole or Partial Breast. Semin Radiat Oncol 2022; 32:245-253. [DOI: 10.1016/j.semradonc.2022.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Maliko N, Stam MR, Boersma LJ, Vrancken Peeters MJTFD, Wouters MWJM, KleinJan E, Mulder M, Essers M, Hurkmans CW, Bijker N. Transparency in quality of radiotherapy for breast cancer in the Netherlands: a national registration of radiotherapy-parameters. Radiat Oncol 2022; 17:73. [PMID: 35413924 PMCID: PMC9003170 DOI: 10.1186/s13014-022-02043-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 03/30/2022] [Indexed: 11/29/2022] Open
Abstract
Background Radiotherapy (RT) is part of the curative treatment of approximately 70% of breast cancer (BC) patients. Wide practice variation has been reported in RT dose, fractionation and its treatment planning for BC. To decrease this practice variation, it is essential to first gain insight into the current variation in RT treatment between institutes. This paper describes the development of the NABON Breast Cancer Audit-Radiotherapy (NBCA-R), a structural nationwide registry of BC RT data of all BC patients treated with at least surgery and RT. Methods A working group consisting of representatives of the BC Platform of the Dutch Radiotherapy Society selected a set of dose volume parameters deemed to be surrogate outcome parameters, both for tumour control and toxicity. Two pilot studies were carried out in six RT institutes. In the first pilot study, data were manually entered into a secured web-based system. In the second pilot study, an automatic Digital Imaging and Communications in Medicine (DICOM) RT upload module was created and tested. Results The NBCA-R dataset was created by selecting RT parameters describing given dose, target volumes, coverage and homogeneity, and dose to organs at risk (OAR). Entering the data was made mandatory for all Dutch RT departments. In the first pilot study (N = 1093), quite some variation was already detected. Application of partial breast irradiation varied from 0 to 17% between the 6 institutes and boost to the tumour bed from 26.5 to 70.2%. For patients treated to the left breast or chest wall only, the average mean heart dose (MHD) varied from 0.80 to 1.82 Gy; for patients treated to the breast/chest wall only, the average mean lung dose (MLD) varied from 2.06 to 3.3 Gy. In the second pilot study 6 departments implemented the DICOM-RT upload module in daily practice. Anonymised data will be available for researchers via a FAIR (Findable, Accessible, Interoperable, Reusable) framework. Conclusions We have developed a set of RT parameters and implemented registration for all Dutch BC patients. With the use of an automated upload module registration burden will be minimized. Based on the data in the NBCA-R analyses of the practice variation will be done, with the ultimate aim to improve quality of BC RT. Trial registration Retrospectively registered.
Supplementary Information The online version contains supplementary material available at 10.1186/s13014-022-02043-0.
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Affiliation(s)
- Nansi Maliko
- Scientific Bureau, Dutch Institute for Clinical Auditing, Leiden, The Netherlands.,Department of Surgical Oncology, Netherlands Cancer Institute/Antoni Van Leeuwenhoek, Amsterdam, The Netherlands
| | | | - Liesbeth J Boersma
- Department of Radiation Oncology (Maastro), GROW School for Oncology, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Marie-Jeanne T F D Vrancken Peeters
- Department of Surgical Oncology, Netherlands Cancer Institute/Antoni Van Leeuwenhoek, Amsterdam, The Netherlands.,Department of Surgery, AmsterdamUMC, Amsterdam, the Netherlands
| | - Michel W J M Wouters
- Scientific Bureau, Dutch Institute for Clinical Auditing, Leiden, The Netherlands.,Department of Surgical Oncology, Netherlands Cancer Institute/Antoni Van Leeuwenhoek, Amsterdam, The Netherlands.,Department of Biomedical Data Sciences, Leiden University Medical Centre, Leiden, The Netherlands
| | - Eline KleinJan
- Trusted Third Party, Medical Research Data Management, Deventer, The Netherlands
| | - Maurice Mulder
- Trusted Third Party, Medical Research Data Management, Deventer, The Netherlands
| | | | - Coen W Hurkmans
- Department of Radiation Oncology, Catharina Hospital, Eindhoven, The Netherlands
| | - Nina Bijker
- Department of Radiation Oncology, AmsterdamUMC, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
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11
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Lorenzen EL, Kallehauge JF, Byskov CS, Dahlrot RH, Haslund CA, Guldberg TL, Lassen-Ramshad Y, Lukacova S, Muhic A, Witt Nyström P, Haldbo-Classen L, Bahij I, Larsen L, Weber B, Hansen CR. A national study on the inter-observer variability in the delineation of organs at risk in the brain. Acta Oncol 2021; 60:1548-1554. [PMID: 34629014 DOI: 10.1080/0284186x.2021.1975813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND The Danish Neuro Oncology Group (DNOG) has established national consensus guidelines for the delineation of organs at risk (OAR) structures based on published literature. This study was conducted to finalise these guidelines and evaluate the inter-observer variability of the delineated OAR structures by expert observers. MATERIAL AND METHODS The DNOG delineation guidelines were formed by participants from all Danish centres that treat brain tumours with radiotherapy. In a two-day workshop, guidelines were discussed and finalised based on a pilot study. Following this, the ten participants contoured the following OARs on T1-weighted gadolinium enhanced MRI from 13 patients with brain tumours: optic tracts, optic nerves, chiasm, spinal cord, brainstem, pituitary gland and hippocampus. The metrics used for comparison were the Dice similarity coefficient (Dice), mean surface distance (MSD) and others. RESULTS A total of 968 contours were delineated across the 13 patients. On average eight (range six to nine) individual contour sets were made per patient. Good agreement was found across all structures with a median MSD below 1 mm for most structures, with the chiasm performing the best with a median MSD of 0.45 mm. The Dice was as expected highly volume dependent, the brainstem (the largest structure) had the highest Dice value with a median of 0.89 whereas smaller volumes such as the chiasm had a Dice of 0.71. CONCLUSION Except for the caudal definition of the spinal cord, the variances observed in the contours of OARs in the brain were generally low and consistent. Surface mapping revealed sub-regions of higher variance for some organs. The data set is being prepared as a validation data set for auto-segmentation algorithms for use within the Danish Comprehensive Cancer Centre - Radiotherapy and potential collaborators.
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Affiliation(s)
| | - Jesper Folsted Kallehauge
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Camilla Skinnerup Byskov
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Rikke Hedegaard Dahlrot
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | | | | | | | - Slávka Lukacova
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Aida Muhic
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark
| | - Petra Witt Nyström
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | | | - Ihsan Bahij
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Lone Larsen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - Britta Weber
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - Christian Rønn Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
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12
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Thomsen MS, Berg M, Zimmermann S, Lutz CM, Makocki S, Jensen I, Hjelstuen MHB, Pensold S, Hasler MP, Jensen MB, Offersen BV. Dose constraints for whole breast radiation therapy based on the quality assessment of treatment plans in the randomised Danish breast cancer group (DBCG) HYPO trial. Clin Transl Radiat Oncol 2021; 28:118-123. [PMID: 33937532 PMCID: PMC8079332 DOI: 10.1016/j.ctro.2021.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/27/2021] [Accepted: 03/28/2021] [Indexed: 12/25/2022] Open
Abstract
Purpose Quality assessment of the treatment plans in the Danish Breast Cancer Group (DBCG) HYPO trial was carried out based on prospectively reported dosimetric parameters and evidence-based dose constraints for whole breast radiation therapy were derived. Materials and methods From 2009 to 2014, 1882 patients (pts) were randomised between 50 Gy/25fractions (fr) versus 40 Gy/15fr. Doses to CTVp_breast (V95%, V107%-V110%, Dmax, and in addition for 40 Gy plans V105%-V107%), ipsilateral lung (V20Gy/V17Gy), heart (V20Gy/V17Gy, V40Gy/V35Gy), and left anterior descending coronary artery (LADCA) (Dmax) and use of respiratory gated technique were prospectively reported to the DBCG database. After end of accrual, these dosimetric parameters from all plans in the trial were compared to the pre-specified treatment constraints. Results In total, 1854 pts from eight radiation therapy (RT) centres in three countries were treated. No statistically significant differences were found between the results for 40 Gy and 50 Gy plans, except for CTVp_breast hot-spot volume (V107%-V110%). Of the 40 Gy pts, 90% with CTVp_breast > 600 mL and 95% with CTVp_breast ≤ 600 mL had a CTVp_breast hot-spot volume (V105%-V107%) <2%. In 95% of the 50 Gy plans, the CTVp_breast absolute hot-spot volume (V107%-V110%) was <0.5 mL and 1.7 mL for CTVp_breast ≤ 600 mL and > 600 mL, respectively. Compliance was >99% for both heart and lung constraints. Largest deviation from protocol constraints was found for the volume of CTVp_breast covered with 95% of the prescription dose or more (V95%). The CTV dose coverage (V95%) was >94.3% in 95% of the right-sided pts, whereas the figures for 95% of the left-sided pts treated with and without respiratory gating were 93.2% and 88.8%, respectively. Conclusion A high degree of compliance with protocol dose constraints was found for treatment plans in the DBCG HYPO trial. New constraints for dose to organs at risk and high-dose volumes in the breast are suggested for breast-only RT planning.
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Affiliation(s)
- M S Thomsen
- Department of Medical Physics, Aarhus University Hospital, Aarhus, Denmark
| | - M Berg
- Department of Medical Physics, Lillebaelt Hospital, Vejle, Denmark
| | - S Zimmermann
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - C M Lutz
- Department of Medical Physics, Aarhus University Hospital, Aarhus, Denmark
| | - S Makocki
- Dept of Radiation Oncology and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - I Jensen
- Department of Medical Physics, Aalborg University Hospital, Aalborg, Denmark
| | - M H B Hjelstuen
- Department of Radiotherapy, Stavanger University Hospital, Stavanger, Norway
| | - S Pensold
- Praxis for Radiotherapy, Academic Teaching Hospital Dresden-Friedrichstadt, Dresden, Germany
| | - M P Hasler
- Department of Oncology, Sørlandet Hospital, Kristiansand, Norway
| | - M-B Jensen
- Danish Breast Cancer Cooperative Group, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - B V Offersen
- Department of Experimental Clinical Oncology and Department of Oncology, Aarhus University Hospital, Denmark
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13
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Lutz CM, Knap MM, Hoffmann L, Møller DS, Hansen O, Brink C, Schytte T, Nyhus CH, McCulloch T, Borissova S, Alber M, Khalil AA. Prospectively scored pulmonary toxicities in non-small cell lung cancer: Results from a randomized phase II dose escalation trial. Clin Transl Radiat Oncol 2021; 27:8-14. [PMID: 33385069 PMCID: PMC7770437 DOI: 10.1016/j.ctro.2020.11.013] [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: 06/09/2020] [Revised: 11/19/2020] [Accepted: 11/21/2020] [Indexed: 10/26/2022] Open
Abstract
Purpose Prospectively scored radiation pneumonitis (RP) observed in a national, randomized phase II dose-escalation trial for patients with locally advanced non-small cell lung cancer (NSCLC) was investigated. Methods Patients with stage IIB-IIIB histologically proven NSCLC were treated with concomitant chemo-radiotherapy (oral Vinorelbine 3times/week) at 60 Gy/30fx (A-59pts) and 66 Gy/33fx (B-58pts) from 2009 to 2013 at five Danish RT centers. Grade 2 RP (CTCAEv3.0) was investigated with univariate analysis for association with clinical and dosimetric parameters, including dyspnea and cough at baseline and during RT. Multivariable logistic regression and Cox regression with regularization were used to find a multivariable model for RP ≥ G2. Results Despite a tendency of higher mean lung dose in the high-dose arm (median[range] A = 14.9 Gy[5.8,23.1], B = 17.5 Gy[8.6,24.8], p = 0.075), pulmonary toxicities were not significantly different (RP ≥ G2 41%(A) and 52%(B), p = 0.231). A Kaplan Meier analysis of the time to RP ≥ G2 between the two arms did not reach statistical significance (p = 0.180). Statistically significant risk factors for RP ≥ G2 were GTV size (OR = 2.091/100 cm3, p = 0.002), infection at baseline or during RT (OR = 8.087, p = 0.026), dyspnea at baseline (OR = 2.184, p = 0.044) and increase of cough during RT (OR = 2.787, p = 0.008). In the multivariable logistic regression and the Cox regression analysis, the deviances of the most predictive models were within one standard deviation of the null model. Conclusion No statistical difference between the high- and low dose arm was found in the risk of developing RP. The univariate analysis identified target volume, infection, dyspnea at baseline, and increase of cough during RT as risk factors for RP. The number of patients was too small to establish a statistically sound multivariable model.
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Affiliation(s)
- Christina M Lutz
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Marianne M Knap
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Lone Hoffmann
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Ditte S Møller
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Olfred Hansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Carsten Brink
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Tine Schytte
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | | | - Tine McCulloch
- Department of Oncology, Aalborg Hospital, Aalborg, Denmark
| | | | - Markus Alber
- Heidelberg Institute for Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
| | - Azza A Khalil
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
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14
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Finnegan R, Lorenzen EL, Dowling J, Jensen I, Berg M, Thomsen MS, Delaney GP, Koh ES, Thwaites D, Brink C, Offersen BV, Holloway L. Analysis of cardiac substructure dose in a large, multi-centre danish breast cancer cohort (the DBCG HYPO trial): Trends and predictive modelling. Radiother Oncol 2020; 153:130-138. [DOI: 10.1016/j.radonc.2020.09.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/26/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022]
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15
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Offersen BV, Alsner J, Nielsen HM, Jakobsen EH, Nielsen MH, Krause M, Stenbygaard L, Mjaaland I, Schreiber A, Kasti UM, Overgaard J. Hypofractionated Versus Standard Fractionated Radiotherapy in Patients With Early Breast Cancer or Ductal Carcinoma In Situ in a Randomized Phase III Trial: The DBCG HYPO Trial. J Clin Oncol 2020; 38:3615-3625. [PMID: 32910709 DOI: 10.1200/jco.20.01363] [Citation(s) in RCA: 141] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Given the poor results using hypofractionated radiotherapy for early breast cancer, a dose of 50 Gy in 25 fractions (fr) has been the standard regimen used by the Danish Breast Cancer Group (DBCG) since 1982. Results from more recent trials have stimulated a renewed interest in hypofractionation, and the noninferiority DBCG HYPO trial (ClincalTrials.gov identifier: NCT00909818) was designed to determine whether a dose of 40 Gy in 15 fr does not increase the occurrence of breast induration at 3 years compared with a dose of 50 Gy in 25 fr. PATIENTS AND METHODS One thousand eight hundred eighty-two patients > 40 years of age who underwent breast-conserving surgery for node-negative breast cancer or ductal carcinoma in situ (DCIS) were randomly assigned to radiotherapy at a dose of either 50 Gy in 25 fr or 40 Gy in 15 fr. The primary end point was 3-year grade 2-3 breast induration assuming noninferiority regarding locoregional recurrence. RESULTS A total of 1,854 consenting patients (50 Gy, n = 937; 40 Gy, n = 917) were enrolled from 2009-2014 from eight centers. There were 1,608 patients with adenocarcinoma and 246 patients with DCIS. The 3-year rates of induration were 11.8% (95% CI, 9.7% to 14.1%) in the 50-Gy group and 9.0% (95% CI, 7.2% to 11.1%) in the 40-Gy group (risk difference, -2.7%; 95% CI, -5.6% to 0.2%; P = .07). Systemic therapies and radiotherapy boost did not increase the risk of induration. Telangiectasia, dyspigmentation, scar appearance, edema, and pain were detected at low rates, and cosmetic outcome and patient satisfaction with breast appearance were high with either no difference or better outcome in the 40-Gy cohort compared with the 50-Gy cohort. The 9-year risk of locoregional recurrence was 3.3% (95% CI, 2.0% to 5.0%) in the 50-Gy group and 3.0% (95% CI, 1.9% to 4.5%) in the 40-Gy group (risk difference, -0.3%; 95% CI, -2.3% to 1.7%). The 9-year overall survival was 93.4% (95% CI, 91.1% to 95.1%) in the 50-Gy group and 93.4% (95% CI, 91.0% to 95.2%) in the 40-Gy group. The occurrence of radiation-associated cardiac and lung disease was rare and not influenced by the fractionation regimen. CONCLUSION Moderately hypofractionated breast irradiation of node-negative breast cancer or DCIS did not result in more breast induration compared with standard fractionated therapy. Other normal tissue effects were minimal, with similar or less frequent rates in the 40-Gy group. The 9-year locoregional recurrence risk was low.
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Affiliation(s)
- Birgitte V Offersen
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark.,Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Jan Alsner
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Hanne M Nielsen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Mette H Nielsen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - Mechthild Krause
- Department of Radiation Oncology and OncoRay Center, University Hospital and Faculty of Medicine Carl Gustav Carus; Technische Universität Dresden; German Cancer Consortium Dresden; Helmholtz-Zentrum Dresden-Rossendorf; National Center for Tumor Diseases, Dresden; and German Cancer Research Center, Heidelberg, Germany
| | - Lars Stenbygaard
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - Ingvil Mjaaland
- Department of Oncology, Stavanger University Hospital, Stavanger, Norway
| | - Andreas Schreiber
- Department of Oncology, Academic Teaching Hospital Dresden-Friedrichstadt, Dresden, Germany
| | - Unn-Miriam Kasti
- Department of Oncology, Kristiansand Hospital, Kristiansand, Norway
| | - Jens Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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16
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Geneviève LD, Martani A, Mallet MC, Wangmo T, Elger BS. Factors influencing harmonized health data collection, sharing and linkage in Denmark and Switzerland: A systematic review. PLoS One 2019; 14:e0226015. [PMID: 31830124 PMCID: PMC6907832 DOI: 10.1371/journal.pone.0226015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 11/18/2019] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION The digitalization of medicine has led to a considerable growth of heterogeneous health datasets, which could improve healthcare research if integrated into the clinical life cycle. This process requires, amongst other things, the harmonization of these datasets, which is a prerequisite to improve their quality, re-usability and interoperability. However, there is a wide range of factors that either hinder or favor the harmonized collection, sharing and linkage of health data. OBJECTIVE This systematic review aims to identify barriers and facilitators to health data harmonization-including data sharing and linkage-by a comparative analysis of studies from Denmark and Switzerland. METHODS Publications from PubMed, Web of Science, EMBASE and CINAHL involving cross-institutional or cross-border collection, sharing or linkage of health data from Denmark or Switzerland were searched to identify the reported barriers and facilitators to data harmonization. RESULTS Of the 345 projects included, 240 were single-country and 105 were multinational studies. Regarding national projects, a Swiss study reported on average more barriers and facilitators than a Danish study. Barriers and facilitators of a technical nature were most frequently reported. CONCLUSION This systematic review gathered evidence from Denmark and Switzerland on barriers and facilitators concerning data harmonization, sharing and linkage. Barriers and facilitators were strictly interrelated with the national context where projects were carried out. Structural changes, such as legislation implemented at the national level, were mirrored in the projects. This underlines the impact of national strategies in the field of health data. Our findings also suggest that more openness and clarity in the reporting of both barriers and facilitators to data harmonization constitute a key element to promote the successful management of new projects using health data and the implementation of proper policies in this field. Our study findings are thus meaningful beyond these two countries.
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Affiliation(s)
| | - Andrea Martani
- Institute for Biomedical Ethics, University of Basel, Basel, Switzerland
| | | | - Tenzin Wangmo
- Institute for Biomedical Ethics, University of Basel, Basel, Switzerland
| | - Bernice Simone Elger
- Institute for Biomedical Ethics, University of Basel, Basel, Switzerland
- University Center of Legal Medicine, University of Geneva, Geneva, Switzerland
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17
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Hansen CR, Friborg J, Jensen K, Samsøe E, Johnsen L, Zukauskaite R, Grau C, Maare C, Johansen J, Primdahl H, Bratland Å, Kristensen CA, Andersen M, Eriksen JG, Overgaard J. NTCP model validation method for DAHANCA patient selection of protons versus photons in head and neck cancer radiotherapy. Acta Oncol 2019; 58:1410-1415. [PMID: 31432744 DOI: 10.1080/0284186x.2019.1654129] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Introduction: Prediction models using logistic regression may perform poorly in external patient cohorts. However, there is a need to standardize and validate models for clinical use. The purpose of this project was to describe a method for validation of external NTCP models used for patient selection in the randomized trial of protons versus photons in head and neck cancer radiotherapy, DAHANCA 35. Material and methods: Organs at risk of 588 patients treated primarily with IMRT in the randomized controlled DAHANCA19 trial were retrospectively contoured according to recent international recommendations. Dose metrics were extracted using MatLab and all clinical parameters were retrieved from the DAHANCA database. The model proposed by Christianen et al. to predict physician-rated dysphagia was validated through the closed testing, where change of the model intercept, slope and individual beta's were tested for significant prediction improvements. Results: Six months prevalence of dysphagia in the validation cohort was 33%. The closed testing procedure for physician-rated dysphagia showed that the Christianen et al. model needed an intercept refitting for the best match for the Danish patients. The intercept update increased the risk of dysphagia for the validation cohort by 7.9 ± 2.5% point. For the raw model performance, the Brier score (mean squared residual) was 0.467, which improved significantly with a new intercept to 0.415. Conclusions: The previously published Dutch dysphagia model needed an intercept update to match the Danish patient cohort. The implementation of a closed testing procedure on the current validation cohort allows quick and efficient validation of external NTCP models for patient selection in the future.
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Affiliation(s)
- C. R. Hansen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Institute of Medical Physics, School of Physics, The University of Sydney, Sydney, Australia
| | - J. Friborg
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Rigshospitalet, Copenhagen, Denmark
| | - K. Jensen
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
| | - E. Samsøe
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Copenhagen University Hospital Herlev, Copenhagen, Denmark
| | - L. Johnsen
- Laboratory of Radiation Physics, Odense University Hospital, Odense, Denmark
| | - R. Zukauskaite
- Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - C. Grau
- Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - C. Maare
- Department of Oncology, Copenhagen University Hospital Herlev, Copenhagen, Denmark
| | - J. Johansen
- Department of Oncology, Odense University Hospital, Odense, Denmark
| | - H. Primdahl
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - Å. Bratland
- The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | | | - M Andersen
- Department of Oncology, Aalborg University Hospital, Aalborg, Denmark
| | - J. G. Eriksen
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
| | - J. Overgaard
- Department of Experimental Clinical Oncology, Aarhus University Hospital, Aarhus, Denmark
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