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Michalet M, Riou O, Azria D, Decoene C, Crop F. News in magnetic resonance imaging use for radiation oncology. Cancer Radiother 2022; 26:784-788. [PMID: 36031496 DOI: 10.1016/j.canrad.2022.06.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 11/29/2022]
Abstract
The purpose of this article is to give a summary of the progress of magnetic resonance imaging (MRI) in radiotherapy. MRI is an important imaging modality for treatment planning in radiotherapy. However, the registration step with the simulation scanner can be a source of errors, motivating the implementation of all-MRI simulation methods and new accelerators coupled with on-board MRI. First, practical MRI imaging for radiotherapy is detailed, but also the importance of a coherent imaging workflow incorporating all imaging modalities. Second, future evolutions and research domains such as quantitative imaging biomarkers, MRI-only pseudo computed tomography and radiomics are discussed. Finally, the application of MRI during radiotherapy treatment is reviewed: the use of MR-linear accelerators. MRI is increasingly integrated into radiotherapy. Advances in diagnostic imaging can thus benefit radiotherapy, but specific radiotherapy constraints lead to additional challenges and require close collaboration between radiologists, radiation oncologists, technologists and physicists. The integration of quantitative imaging biomarkers in the radiotherapy process will result in mutual benefit for diagnostic imaging and radiotherapy. MRI-guided radiotherapy has already been used for several years in clinical routine. Abdominopelvic neoplasias (pancreas, liver, prostate) are the preferred locations for treatment because of their favourable contrast in MRI, their movement during irradiation and their proximity to organs at risk of radiation exposure, making the tracking and daily adaptation of the plan essential. MRI has emerged as an increasingly necessary imaging modality for radiotherapy planning. Inclusion of patients in clinical trials evaluating new MRI-guided radiotherapy techniques and associated quantitative imaging biomarkers will be necessary to assess the benefits.
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Affiliation(s)
- M Michalet
- Institut du cancer de Montpellier, Fédération universitaire d'oncologie-radiothérapie d'Occitanie Méditerranée (Forom), Inserm U1194 IRCM, 208, avenue des Apothicaires, 34298 Montpellier, France.
| | - O Riou
- Institut du cancer de Montpellier, Fédération universitaire d'oncologie-radiothérapie d'Occitanie Méditerranée (Forom), Inserm U1194 IRCM, 208, avenue des Apothicaires, 34298 Montpellier, France
| | - D Azria
- Institut du cancer de Montpellier, Fédération universitaire d'oncologie-radiothérapie d'Occitanie Méditerranée (Forom), Inserm U1194 IRCM, 208, avenue des Apothicaires, 34298 Montpellier, France
| | - C Decoene
- Medical physics, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France
| | - F Crop
- Medical physics, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France
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Ninni S, Gallot Lavallee T, Klein C, Longere B, Brigadeau F, Potelle C, Crop F, Rault E, Lacornerie T, Lals S, Kouakam C, Pontana F, Lacroix D, Klug D, Mirabel X. Stereotactic radiosurgery for ablation of ventricular tachycardia in the setting of electrical storm. Europace 2022. [DOI: 10.1093/europace/euac053.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Stereotactic body radiotherapy (SBRT) has been reported as a safe and efficient therapy to treat refractory VT despite optimal medical treatment and/or catheter ablation (CA). However data in the setting of ES are lacking.
Objectives
The aim of this study was to assess the clinical outcomes associated with SBRT in the setting of ES.
Methods
This retrospective study included patients who underwent SBRT in the setting of ES from March 2019 to March 2021 in one tertiary center (CHU Lille). Target volume was delineated according to a predefined workflow. The efficacy was assessed with the following endpoints: sustained VT recurrence, VT reduced with ATP or ICD shock.
Results
17 patients underwent SBRT to treat refractory VT in the setting of ES (Mean age: 67±12.8, 59% presenting ischemic heart disease, mean LVEF: 33.7± 9.7%). After a median follow-up of 7 [5; 16] months, a reduction in VT burden was observed in all patients after a 6-week blanking period. 6 patients presented an increase of the VT burden from week 2 to week 6 following SBRT despite an initial reduction of VT burden. No patient experienced ICD shocks beyond 6 weeks.
Conclusion
SBRT is efficient in treating recurrent VT in the setting of ES with failure and/or contraindication to CA. One third of patient present a transient increase in VT burden during a 6 weeks blanking period. Therefore, VT tolerance should be integrated as part of an action plan defined upstream to SBRT for each patient.
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Affiliation(s)
- S Ninni
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | | | - C Klein
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | - B Longere
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | - F Brigadeau
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | - C Potelle
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | - F Crop
- Centre Oscar Lambret, lille, France
| | - E Rault
- Centre Oscar Lambret, lille, France
| | | | - S Lals
- Centre Oscar Lambret, lille, France
| | - C Kouakam
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | - F Pontana
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | - D Lacroix
- Chru De Lille - Institut Coeur-Poumons, Lille, France
| | - D Klug
- Chru De Lille - Institut Coeur-Poumons, Lille, France
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Crop F, Guillaud O, Gaignierre A, Barre C, Fayard C, Ben Haj Amor M, Mouttet-Audouard R, Mirabel X. PO-1610 Evaluation of Compressed Sensing acceleration for 3D radiotherapy MRI. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03574-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tonneau M, Matta R, Lals S, Mirabel X, Crop F, Lacornerie T, Pasquier D, Escande A, Liem X. [Radiotherapy for patients with early-stage glottic squamous cell carcinoma of the larynx: Interest of hypofractionation?]. Cancer Radiother 2021; 25:801-810. [PMID: 33931299 DOI: 10.1016/j.canrad.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/07/2021] [Accepted: 04/07/2021] [Indexed: 11/15/2022]
Abstract
Hypofractionated radiotherapy of early-stage squamous cell carcinoma of the glottic larynx is a promising treatment option. This can be divided into radiotherapy with moderate hypofractionation (up to 2.5Gy per fraction), more intense hypofractionation (between 2.5 and 4.5Gy per fraction) and stereotactic radiotherapy (above 4.5Gy per fraction). Most studies evaluating moderate hypofractionation show a local control rate between 85 and 95%. Acute laryngeal toxicity is superior to conventional treatment, but only for grades 1 and 2, with no significant difference reported for severe toxicity. Stereotactic radiotherapy in this pathology is also an emerging entity, but some authors have reported significant toxicity. There are currently no standardized guidelines for treatment and management regimen. We conducted a systemic review of published prospective and retrospective trials to evaluate efficacy, toxicity, and discuss future directions.
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Affiliation(s)
- M Tonneau
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France; Centre de recherche du centre hospitalier universitaire de Montréal (CRCHUM), QC, Canada
| | - R Matta
- Université de Lille, université Henri-Warembourg, 59000 Lille, France
| | - S Lals
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France
| | - X Mirabel
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France
| | - F Crop
- Service de physique médicale, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France
| | - T Lacornerie
- Service de physique médicale, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France
| | - D Pasquier
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France; Université de Lille, université Henri-Warembourg, 59000 Lille, France; Centre de recherche en informatique, signal et automatique de Lille (Cristal), UMR 9189, 59000 Lille, France
| | - A Escande
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France
| | - X Liem
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59000 Lille, France.
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Crop F, Comte P, Laffarguette J, Cayez R, Pasquier D, Mirabel X, Lacornerie T. PO-1639: Surface Image Guided Radiotherapy for breast treatments on Halcyon. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01657-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bataille B, Le Tinier F, Bennadji R, Basson L, Escande A, Tresch E, Crop F, Darloy F, Carlier D, Mirabel X, Lartigau E, Pasquier D. PO-0974: Helical intensity-modulated radiation therapy for locally advanced breast cancer:a prospective study. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00992-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wagner A, Brou Boni K, Rault E, Crop F, Lacornerie T, Van Gestel D, Reynaert N. PO-1352: Prediction of electron beam parameters of a Monte Carlo model using machine learning. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01371-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wagner A, Brou Boni K, Rault E, Crop F, Lacornerie T, Van Gestel D, Reynaert N. Integration of the M6 Cyberknife in the Moderato Monte Carlo platform and prediction of beam parameters using machine learning. Phys Med 2020; 70:123-132. [PMID: 32007601 DOI: 10.1016/j.ejmp.2020.01.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/27/2019] [Accepted: 01/20/2020] [Indexed: 11/18/2022] Open
Abstract
PURPOSE This work describes the integration of the M6 Cyberknife in the Moderato Monte Carlo platform, and introduces a machine learning method to accelerate the modelling of a linac. METHODS The MLC-equipped M6 Cyberknife was modelled and integrated in Moderato, our in-house platform offering independent verification of radiotherapy dose distributions. The model was validated by comparing TPS dose distributions with Moderato and by film measurements. Using this model, a machine learning algorithm was trained to find electron beam parameters for other M6 devices, by simulating dose curves with varying spot size and energy. The algorithm was optimized using cross-validation and tested with measurements from other institutions equipped with a M6 Cyberknife. RESULTS Optimal agreement in the Monte Carlo model was reached for a monoenergetic electron beam of 6.75 MeV with Gaussian spatial distribution of 2.4 mm FWHM. Clinical plan dose distributions from Moderato agreed within 2% with the TPS, and film measurements confirmed the accuracy of the model. Cross-validation of the prediction algorithm produced mean absolute errors of 0.1 MeV and 0.3 mm for beam energy and spot size respectively. Prediction-based simulated dose curves for other centres agreed within 3% with measurements, except for one device where differences up to 6% were detected. CONCLUSIONS The M6 Cyberknife was integrated in Moderato and validated through dose re-calculations and film measurements. The prediction algorithm was successfully applied to obtain electron beam parameters for other M6 devices. This method would prove useful to speed up modelling of new machines in Monte Carlo systems.
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Affiliation(s)
- A Wagner
- Department of Medical Physics, Centre Oscar Lambret, Lille, France; Faculty of Biomedical Sciences, University of Brussels ULB, Belgium.
| | - K Brou Boni
- Department of Medical Physics, Centre Oscar Lambret, Lille, France; University of Lille, CNRS, CRIStAL, Centrale Lille, France
| | - E Rault
- Department of Medical Physics, Centre Oscar Lambret, Lille, France
| | - F Crop
- Department of Medical Physics, Centre Oscar Lambret, Lille, France
| | - T Lacornerie
- Department of Medical Physics, Centre Oscar Lambret, Lille, France
| | - D Van Gestel
- Faculty of Biomedical Sciences, University of Brussels ULB, Belgium; Department of Radiation Therapy, Institut Jules Bordet, Brussels, Belgium
| | - N Reynaert
- Department of Medical Physics, Centre Oscar Lambret, Lille, France; Faculty of Biomedical Sciences, University of Brussels ULB, Belgium; Department of Medical Physics, Institut Jules Bordet, Brussels, Belgium
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Bataille B, Le Tinier F, Bennadji R, Basson L, Tresch E, Crop F, Darloy F, Carlier D, Mirabel X, Lartigau É, Pasquier D. Tomothérapie adjuvante du cancer du sein par avec boost intégré : évaluation prospective de la toxicité et de la qualité de vie. Cancer Radiother 2019. [DOI: 10.1016/j.canrad.2019.07.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Fessart É, Crop F, Tresch E, Mirabel X, Lartigau É, Pasquier D. [Left-sided breast cancer locoregional radiation therapy with rotational intensity-modulated irradiation and deep inspiration breath hold: Dosimetric comparison]. Cancer Radiother 2019; 23:92-97. [PMID: 30954386 DOI: 10.1016/j.canrad.2018.07.139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/02/2018] [Accepted: 07/10/2018] [Indexed: 12/25/2022]
Abstract
PURPOSE Adjuvant left-sided breast cancer locoregional radiotherapy can be accounted for long-term cardiac toxicity. The deep inspiration breath hold techniques can reduce cardiac doses. Only a few studies have investigated rotational intensity-modulated radiotherapy with deep inspiration breath hold. MATERIAL AND METHODS We conducted a dosimetric study comparing rotational intensity-modulated radiotherapy in free breathing with deep inspiration breath hold for irradiation of left breast cancer and locoregional lymph nodes. Doses to organs at risk were compared, as well as doses to coronary arteries, left anterior descending coronary artery region, and aortic valve. RESULTS The data from nine patients were included in the study. Treatment plans were comparable for target volumes. The deep inspiration breath hold delivery technique, compared with free breathing, reduced radiation dose to the heart (mean dose 4.8Gy vs. 6.6Gy, p=0.008; dose in 2% of the volume 16.8Gy vs. 23.3Gy, p=0.008; volume receiving 25Gy 0.8% vs. 2,2%, p=0.008; volume receiving 30Gy 0.4% vs. 1.2%, p=0.009), as well as to the right coronary artery (mean dose 6Gy vs. 8.9Gy, p=0.028), to the left anterior descending artery (mean dose 9.6Gy vs. 14.6Gy, p=0.021), to the left anterior descending coronary artery region (dose in 2% of the volume 17.4Gy vs. 24.6Gy, p=0.021), and to the aortic valve (mean dose 4.8Gy vs. 7Gy, p=0.028). Other doses to organs at risk were similar. CONCLUSION Rotational intensity-modulated radiotherapy with deep inspiration breath hold is associated with better sparing of the heart, on the right and left anterior descending coronary arteries, and on the aortic valve, compared with free breathing techniques, for adjuvant left breast cancer locoregional irradiation.
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Affiliation(s)
- É Fessart
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59020 Lille cedex, France.
| | - F Crop
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59020 Lille cedex, France
| | - E Tresch
- Département de biostatistiques, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59020 Lille cedex, France
| | - X Mirabel
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59020 Lille cedex, France
| | - É Lartigau
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59020 Lille cedex, France; Centre de recherche en informatique, signal et automatique de Lille (CRIStAL), UMR 9189, CNRS, avenue Carl-Gauss, 59650 Villeneuve-d'Ascq, France; Université de Lille, avenue Carl-Gauss, 59650 Villeneuve-d'Ascq, France
| | - D Pasquier
- Département universitaire de radiothérapie, centre Oscar-Lambret, 3, rue Frédéric-Combemale, 59020 Lille cedex, France; Centre de recherche en informatique, signal et automatique de Lille (CRIStAL), UMR 9189, CNRS, avenue Carl-Gauss, 59650 Villeneuve-d'Ascq, France; Université de Lille, avenue Carl-Gauss, 59650 Villeneuve-d'Ascq, France
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Vanquin L, Crop F, Rault E, Wagner A, Cayez R, Laffarguette J, Reynaert N, Lacornerie T. 45 Quantification of geometric distortion on MR images and evaluation of the impact of distortion correction. Phys Med 2018. [DOI: 10.1016/j.ejmp.2018.09.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Lebredonchel S, Lacornerie T, Rault E, Wagner A, Reynaert N, Crop F. About the non-consistency of PTV-based prescription in lung. Phys Med 2017; 44:177-187. [DOI: 10.1016/j.ejmp.2017.03.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 12/31/2022] Open
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Wagner A, Crop F, Mirabel X, Tailly C, Reynaert N. Use of an in-house Monte Carlo platform to assess the clinical impact of algorithm-related dose differences on DVH constraints. Phys Med 2017; 42:319-326. [PMID: 28662849 DOI: 10.1016/j.ejmp.2017.05.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/18/2017] [Accepted: 05/18/2017] [Indexed: 10/19/2022] Open
Abstract
PURPOSE The aim of the present work is to evaluate a semi-automatic prescription and validation system of treatment plans for complex delivery techniques, integrated in a Monte Carlo platform, and to investigate the clinical impact of dose differences due to the calculation algorithms, by assessing the changes in DVH constraints. METHODS A new prescription module was implemented into the Moderato system, an in-house Monte Carlo platform, with corresponding dose constraints generated depending on the anatomical region and fractionation scheme considered. The platform was tested on 83 cases treated with Cyberknife and Tomotherapy machines, to assess whether dose variations between the re-calculated dose and the Treatment Planning System might impact the dose constraints on the sensitive structures. RESULTS Dose differences were small (within 3%) between calculation algorithms in most of the thoracic, pelvic and abdominal cases, both for the Cyberknife and Tomotherapy machines. On the other hand, spinal and head and neck treatments presented a few significant dose deviations for constraints on small volumes, such as the optic pathways and the spinal cord. These differences range from -11% to +6%, inducing constraint violations of up to 8% over the dose limit. CONCLUSIONS The Moderato platform offers an interesting tool for plan quality validation, with a prescription module highlighting crucial features in the structures list, and a Monte Carlo dose re-calculation for complex modern techniques. Due to the high number of warnings appearing in some situations, display optimization is required in practice.
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Affiliation(s)
- A Wagner
- Department of Medical Physics, Centre Oscar Lambret and University Lille 1, France
| | - F Crop
- Department of Medical Physics, Centre Oscar Lambret and University Lille 1, France
| | - X Mirabel
- Academic Department of Radiation Oncology, Centre Oscar Lambret and University Lille 2, France
| | - C Tailly
- Department of Medical Physics, Centre Oscar Lambret and University Lille 1, France
| | - N Reynaert
- Department of Medical Physics, Centre Oscar Lambret and University Lille 1, France
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Reynaert N, Demol B, Charoy M, Bouchoucha S, Crop F, Wagner A, Lacornerie T, Dubus F, Rault E, Comte P, Cayez R, Boydev C, Pasquier D, Mirabel X, Lartigau E, Sarrazin T. Clinical implementation of a Monte Carlo based treatment plan QA platform for validation of Cyberknife and Tomotherapy treatments. Phys Med 2016; 32:1225-1237. [DOI: 10.1016/j.ejmp.2016.09.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/12/2016] [Accepted: 09/13/2016] [Indexed: 10/21/2022] Open
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Fourquet J, Crop F, Lacornerie T, Tresch E, Le Tinier F, Horn S, Vasseur F, Lartigau E, Pasquier D. EP-1180: Postoperative IMRT with helical tomotherapy for breast cancer: outcome and toxicity analysis. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32430-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Meniai-Merzouki F, Maillard S, Coche-Dequéant B, Boulanger T, Tresch E, Crop F, Lacornerie T, Lartigau E. EP-1122: Efficacy and safety of stereotactic reirradiation for recurrent brain metastases. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32372-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Crop F, Alquier J, Lacornerie T, Grondin Y, Mirabel X, Besson S, Lartigau E. EP-1455: Impact of the implementation of the radiotherapy workflow optimization software RT-Flow. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32705-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Crop F, Lacornerie T, Lartigau E, Pasquier D, Mirabel X, Rault E. Optimisation and organisation in radiotherapy: Key issues? Phys Med 2015. [DOI: 10.1016/j.ejmp.2015.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Crop F, Steux E, Bouillon J, Gadroy A, Doré J, Baczkiewic A, Olivier Q, Bequet L, Lartigau E, Pasquier D. Breast patient positioning with Catalyst on TomoTherapy. Phys Med 2015. [DOI: 10.1016/j.ejmp.2015.10.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Lebredonchel S, Rault E, Wagner A, Reynaert N, Lacornerie T, Crop F. Est-il logique de prescrire dans le volume cible prévisionnel pour une tumeur pulmonaire ? Cancer Radiother 2015. [DOI: 10.1016/j.canrad.2015.07.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Crop F, Lacornerie T, Mirabel X, Lartigau E. Workflow optimization for robotic stereotactic radiotherapy treatments: Application of Constant Work In Progress workflow. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.orhc.2015.05.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Merzouki F, Pasquier D, Coche-Dequéant B, Lacornerie T, Lartigau É, Crop F. Irradiation stéréotaxique fractionnée par CyberKnife® des méningiomes du sinus caverneux : contrôle et tolérance. Cancer Radiother 2014. [DOI: 10.1016/j.canrad.2014.07.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Crop F, Heckel R, Pasquier D, Lartigau E, Reynaert N. EP-1617: Optimal skin retraction for Helical Tomotherapy breast planning ñ robustness vs skin dose. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31735-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Crop F, Lacornerie T, Szymczak H, Felin A, Bailleux C, Mirabel X, Lartigau E. Treatment and technical intervention time analysis of a robotic stereotactic radiotherapy system. Technol Cancer Res Treat 2013; 13:29-35. [PMID: 23862744 DOI: 10.7785/tcrt.2012.500359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The purpose of this study is to obtain a better operational knowledge of Stereotactic Body Radiotherapy (SBRT) treatments with CyberKnife(r). An analysis of both In-room Times (IRT) and technical interventions of 5 years of treatments was performed, during which more than 1600 patients were treated for various indications, including liver (21%), lung (29%), intracranial (13%), head and neck (11%) and prostate (7%). Technical interventions were recorded along with the time of the failure, time to the intervention, and the complexity and duration of the repair. Analyses of Time Between Failures (TBF) and Service Disrupting TBF(disr) were performed. Treatment time data and variability per indication and following different system upgrades were evaluated. Large variations of IRTs were found between indications, but also large variations for each indication. The combination of the time reduction Tool (using Iris(r)) and Improved Stop Handling was of major impact to shortening of treatment times. The first implementation of the Iris collimator alone did not lead to significantly shorter IRTs for us except during prostate treatments. This was mostly due to the addition at the same time of larger rotational compensation for prostate treatments (58 instead of 1.58). Significant differences of duration between the first fraction and following fractions of a treatment, representing the necessity of defining imaging parameters and explanation to patients, were found for liver (12 min) and lung treatments using Xsight(r) Spine (5 min). Liver and lung treatments represent the longest IRT's and involve the largest variability's in IRT. The malfunction rate of the system followed a Weibull distribution with the shape and scale parameters of 0.8 and 39.7. Mean TBF(disr) was 68 work hours. 60 to 80% of the service disrupting interventions were resolved within 30-60 min, 5% required external intervention and 30% occurred in the morning. The presented results can be applied in the evaluation of the required machine time in order to implement robotic radiosurgery for different indications. The analytical distributions of IRTs and technical interruptions can be used for simulations.
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Affiliation(s)
- F Crop
- Medical Physics, Centre Oscar Lambret and Universite Lille 1, Lille, France.
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Wagner A, Crop F, Lacornerie T, Vandevelde F, Reynaert N. Use of a liquid ionization chamber for stereotactic radiotherapy dosimetry. Phys Med Biol 2013; 58:2445-59. [DOI: 10.1088/0031-9155/58/8/2445] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Nickers P, Le Tinier F, Alt M, Crop F, Lacornerie T, Reynaert N, Castelain B, Lartigau E. Tomotherapy of Locally Advanced Cervix Carcinoma: Clinical Validation of 3 mm CTV-PTV Expansion. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Le Tinier F, Castelain B, Crop F, Reynaert N, Lacornerie T, Lartigau É, Nickers P. Validation clinique d’une marge de 3mm entre les volumes cibles anatomoclinique et prévisionnel pour la tomothérapie des carcinomes du col utérin. Cancer Radiother 2012. [DOI: 10.1016/j.canrad.2012.07.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wagner A, Crop F, Lacornerie T, Vandevelde F, Reynaert N. Use of a liquid ionization chamber for small beam dosimetry. Phys Med 2012. [DOI: 10.1016/j.ejmp.2012.08.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Crop F, Reynaert N, Pittomvils G, Paelinck L, De Wagter C, Vakaet L, Thierens H. The influence of small field sizes, penumbra, spot size and measurement depth on perturbation factors for microionization chambers. Phys Med Biol 2009; 54:2951-69. [DOI: 10.1088/0031-9155/54/9/024] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Crop F, Van Rompaye B, Paelinck L, Vakaet L, Thierens H, De Wagter C. On the calibration process of film dosimetry: OLS inverse regression versus WLS inverse prediction. Phys Med Biol 2008; 53:3971-84. [DOI: 10.1088/0031-9155/53/14/015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Crop F, Reynaert N, Pittomvils G, Paelinck L, De Gersem W, De Wagter C, Vakaet L, De Neve W, Thierens H. Monte Carlo modeling of the ModuLeaf miniature MLC for small field dosimetry and quality assurance of the clinical treatment planning system. Phys Med Biol 2007; 52:3275-90. [PMID: 17505102 DOI: 10.1088/0031-9155/52/11/022] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The purpose of this investigation was the verification of both the measured data and quality of the implementation of the add-on ModuLeaf miniature multileaf collimator (ML mMLC) into the clinical treatment planning system for conformal stereotactic radiosurgery treatment. To this end the treatment head with ML mMLC was modeled in the BEAMnrc Monte Carlo (MC) code. The 6 MV photon beams used in the setup were first benchmarked with a set of measurements. A total ML mMLC transmission of 1.13% of the 10 x 10 cm2 open field dose was measured and reproduced with the BEAMnrc/DOSXYZnrc code. Correspondence between calculated and measured output factors (OFs) was within 2%. Correspondence between MC and measured profiles was within 2% dose and 2 mm distance, only for the smallest 0.5 x 0.5 cm2 field the results were within 3% dose. In the next step, the MC model was compared with Gafchromic film measurements and Pinnacle(3) 7.4 f (convolution superposition algorithm) calculated dose distributions, using a gamma evaluation comparison, for a multi-beam patient setup delivered to a Lucytrade mark phantom. The gamma evaluation of the MC versus Gafchromic film resulted in 3.4% of points not fulfilling gamma <or= 1 for a 2%/2 mm criterion, the Pinnacle(3) 7.4 f versus Gafchromic results 3.8% and Pinnacle versus MC less than 1%. For specific patients with lesions of 8 cc and 0.2 cc, Monte Carlo and Pinnacle simulations of the plans were performed and compared using DVH evaluation. DVHs corresponded within 2% dose and 2% volume.
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Affiliation(s)
- F Crop
- Department of Medical Physics, Ghent University, Proeftuinstraat 86, B-9000 Gent, Belgium.
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