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Set-up variation in palliative radiotherapy: one versus three skin localisation marks. JOURNAL OF RADIOTHERAPY IN PRACTICE 2020. [DOI: 10.1017/s1460396919000748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractBackground:Accuracy and reproducibility of the patient’s position is crucial for successful delivery of radiotherapy (RT). Data on palliative patients’ set-up uncertainties are sparse. The aim of this study was to calculate set-up errors observed for palliative patients positioned using one skin mark (Group 1) versus three skin marks (Group 2) and to assess the accuracy of both approaches.Methods:Displacements in the left–right (L–R) and superior–inferior (S–I) directions were retrospectively analysed for 175 sites treated with a course of fractionated palliative RT. Population mean, systematic and random errors were calculated in both directions for patients positioned with one and three skin marks. Frequency of deviations was also examined for both groups.Results:The population mean, systematic and random errors for Group 1 and 2 for the L–R direction were 0·0, 4·4, 4·8 and 0·4, 3·1 and 3·3 mm, respectively, and in the S–I direction: 0·1, 3·4, 4·2 and 1·2, 2·7 and 3·3 mm, respectively. Frequency of images within the clinical tolerance of 5 mm was 47·1% for Group 1 and 65·9% for Group 2.Conclusion:Three skin marks are recommended for patients receiving a fractionated course of palliative RT, as it reduces set-up error, reduces the number of gross displacements (>10 mm) and increases the number of displacements within the clinically acceptable tolerance of 5 mm.
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Bibault JE, Denis F, Roué A, Gibon D, Fumagalli I, Hennequin C, Barillot I, Quéro L, Paumier A, Mahé MA, Servagi Vernat S, Créhange G, Lapeyre M, Blanchard P, Pointreau Y, Lafond C, Huguet F, Mornex F, Latorzeff I, de Crevoisier R, Martin V, Kreps S, Durdux C, Antoni D, Noël G, Giraud P. [Siriade 2.0: An e-learning platform for radiation oncology contouring]. Cancer Radiother 2018; 22:773-777. [PMID: 30360973 DOI: 10.1016/j.canrad.2018.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 01/23/2018] [Accepted: 02/08/2018] [Indexed: 12/26/2022]
Abstract
PURPOSE In 2008, the French national society of radiation oncology (SFRO) and the association for radiation oncology continued education (AFCOR) created Siriade, an e-learning website dedicated to contouring. MATERIAL AND METHODS Between 2015 and 2017, this platform was updated using the latest digital online tools available. Two main sections were needed: a theoretical part and another section of online workshops. RESULTS Teaching courses are available as online commented videos, available on demand. The practical section of the website is an online contouring workshop that automatically generates a report quantifying the quality of the user's delineation compared with the experts'. CONCLUSION Siriade 2.0 is an innovating digital tool for radiation oncology initial and continuous education.
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Affiliation(s)
- J-E Bibault
- Service d'oncologie radiothérapie, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France; Université Paris Descartes, Paris Sorbonne Cité, 20, rue Leblanc, 75015 Paris, France
| | - F Denis
- Service de radiothérapie, centre Jean-Bernard, 9, rue Beauverger, 72000 Le Mans, France
| | - A Roué
- Institut national des sciences et techniques nucléaires, centre CEA de Saclay, D36, 91191 Gif-sur-Yvette, France
| | - D Gibon
- Aquilab, parc Eurasanté, biocentre Fleming, 250, rue Salvador-Allende, 59120 Loos, France
| | - I Fumagalli
- Service d'oncologie radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefau, 75010 Paris, France
| | - C Hennequin
- Service d'oncologie radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefau, 75010 Paris, France
| | - I Barillot
- Service d'oncologie radiothérapie, centre universitaire de cancérologie Henry-S.-Kaplan, 2, boulevard Tonnellé, 37044 Tours, France; Université François-Rabelais, 2, boulevard Tonnellé, 37044 Tours, France
| | - L Quéro
- Service d'oncologie radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefau, 75010 Paris, France
| | - A Paumier
- Service d'oncologie radiothérapie, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Professeur-Jacques-Monod, 44805 Saint-Herblain, France
| | - M-A Mahé
- Service d'oncologie radiothérapie, institut de cancérologie de l'Ouest René-Gauducheau, boulevard Professeur-Jacques-Monod, 44805 Saint-Herblain, France
| | - S Servagi Vernat
- Service d'oncologie radiothérapie, institut Jean-Godinot, 1, rue Koenig, 51100 Reims, France
| | - G Créhange
- Service d'oncologie radiothérapie, centre Georges-François-Leclerc, 1, rue du Professeur-Marion, 21000 Dijon, France
| | - M Lapeyre
- Service d'oncologie radiothérapie, centre Jean-Perrin, 58, rue Montalembert, 63011 Clermont-Ferrand, France
| | - P Blanchard
- Service d'oncologie radiothérapie Gustave-Roussy, 114, rue Édouard-Vaillant, 94805 Villejuif, France
| | - Y Pointreau
- Service de radiothérapie, centre Jean-Bernard, 9, rue Beauverger, 72000 Le Mans, France
| | - C Lafond
- Service de radiothérapie, centre Jean-Bernard, 9, rue Beauverger, 72000 Le Mans, France
| | - F Huguet
- Service d'oncologie radiothérapie, hôpital Tenon, Hôpitaux universitaires de l'Est parisien, 4, rue de la Chine, 75020 Paris, France; Université Pierre-et-Marie-Curie, 4, rue de la Chine, 75020 Paris, France
| | - F Mornex
- Service d'oncologie radiothérapie, CHU Lyon Sud, 65, chemin du Grand-Revoyet, 69495 Pierre-Bénite, France
| | - I Latorzeff
- Service d'oncologie radiothérapie, clinique Pasteur, 1, rue de la Petite-Vitesse, 31300 Toulouse, France
| | - R de Crevoisier
- Service d'oncologie radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandre-Dunkerque, 35700 Rennes, France
| | - V Martin
- Service d'oncologie radiothérapie, hôpital Saint-Louis, 1, avenue Claude-Vellefau, 75010 Paris, France
| | - S Kreps
- Service d'oncologie radiothérapie, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France; Université Paris Descartes, Paris Sorbonne Cité, 20, rue Leblanc, 75015 Paris, France
| | - C Durdux
- Service d'oncologie radiothérapie, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France; Université Paris Descartes, Paris Sorbonne Cité, 20, rue Leblanc, 75015 Paris, France
| | - D Antoni
- Département universitaire de radiothérapie, centre Paul-Strauss, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg, France
| | - G Noël
- Département universitaire de radiothérapie, centre Paul-Strauss, 3, rue de la Porte-de-l'Hôpital, 67065 Strasbourg, France
| | - P Giraud
- Service d'oncologie radiothérapie, hôpital européen Georges-Pompidou, 20, rue Leblanc, 75015 Paris, France; Université Paris Descartes, Paris Sorbonne Cité, 20, rue Leblanc, 75015 Paris, France.
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Zhou J, Uhl B, Dewit K, Young M, Taylor B, Fei DY, Lo YC. Analysis of daily setup variation with tomotherapy megavoltage computed tomography. Med Dosim 2009; 35:31-7. [PMID: 19931012 DOI: 10.1016/j.meddos.2009.01.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 01/09/2009] [Accepted: 01/12/2009] [Indexed: 12/25/2022]
Abstract
The purpose of this study was to evaluate different setup uncertainties for various anatomic sites with TomoTherapy pretreatment megavoltage computed tomography (MVCT) and to provide optimal margin guidelines for these anatomic sites. Ninety-two patients with tumors in head and neck (HN), brain, lung, abdominal, or prostate regions were included in the study. MVCT was used to verify patient position and tumor target localization before each treatment. With the anatomy registration tool, MVCT provided real-time tumor shift coordinates relative to the positions where the simulation CT was performed. Thermoplastic facemasks were used for HN and brain treatments. Vac-Lok cushions were used to immobilize the lower extremities up to the thighs for prostate patients. No respiration suppression was administered for lung and abdomen patients. The interfractional setup variations were recorded and corrected before treatment. The mean interfractional setup error was the smallest for HN among the 5 sites analyzed. The average 3D displacement in lateral, longitudinal, and vertical directions for the 5 sites ranged from 2.2-7.7 mm for HN and lung, respectively. The largest movement in the lung was 2.0 cm in the longitudinal direction, with a mean error of 6.0 mm and standard deviation of 4.8 mm. The mean interfractional rotation variation was small and ranged from 0.2-0.5 degrees, with the standard deviation ranging from 0.7-0.9 degrees. Internal organ displacement was also investigated with a posttreatment MVCT scan for HN, lung, abdomen, and prostate patients. The maximum 3D intrafractional displacement across all sites was less than 4.5 mm. The interfractional systematic errors and random errors were analyzed and the suggested margins for HN, brain, prostate, abdomen, and lung in the lateral, longitudinal, and vertical directions were between 4.2 and 8.2 mm, 5.0 mm and 12.0 mm, and 1.5 mm and 6.8 mm, respectively. We suggest that TomoTherapy pretreatment MVCT can be used to improve the accuracy of patient positioning and reduce tumor margin.
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Affiliation(s)
- Jining Zhou
- Center for Cancer Treatment, Sharp Grossmont Hospital, La Mesa, CA, USA
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