Frank Schneider1, Sven Clausen2, Anika Jahnke2, Volker Steil2, Frederic Bludau3, Marc Sütterlin4, Udo Obertacke3, Frederik Wenz2. 1. Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany. Electronic address: frank.schneider@umm.de. 2. Department of Radiation Oncology, University Medical Center Mannheim, University of Heidelberg, Germany. 3. Department for Trauma Surgery, University Medical Center Mannheim, University of Heidelberg, Germany. 4. Department of Obstetrics and Gynaecology, University Medical Center Mannheim, University of Heidelberg, Germany.
Abstract
BACKGROUND: Intraoperative radiotherapy (IORT) using the INTRABEAM(®) system promises a flexible use regarding radiation protection compared to other approaches such as electron treatment or HDR brachytherapy with (192)Ir or (60)Co. In this study we compared dose rate measurements of breast- and Kypho-IORT with C-arm fluoroscopy which is needed to estimate radiation protection areas. MATERIALS AND METHODS: C-arm fluoroscopy, breast- and Kypho-IORTs were performed using phantoms (silicon breast or bucket of water). Dose rates were measured at the phantom's surface, at 30 cm, 100 cm and 200 cm distance. Those measurements were confirmed during 10 Kypho-IORT and 10 breast-IORT patient treatments. RESULTS: The measured dose rates were in the same magnitude for all three paradigms and ranges from 20 μSv/h during a simulated breast-IORT at two meter distance up to 64 mSv/h directly at the surface of a simulated Kypho-IORT. Those measurements result in a circle of controlled area (yearly doses >6 mSv) for each paradigm of about 4 m±2 m. DISCUSSION/ CONCLUSIONS: All three paradigms show comparable dose rates which implies that the radiation protection is straight forward and confirms the flexible use of the INTRABEAM(®) system.
BACKGROUND: Intraoperative radiotherapy (IORT) using the INTRABEAM(®) system promises a flexible use regarding radiation protection compared to other approaches such as electron treatment or HDR brachytherapy with (192)Ir or (60)Co. In this study we compared dose rate measurements of breast- and Kypho-IORT with C-arm fluoroscopy which is needed to estimate radiation protection areas. MATERIALS AND METHODS: C-arm fluoroscopy, breast- and Kypho-IORTs were performed using phantoms (silicon breast or bucket of water). Dose rates were measured at the phantom's surface, at 30 cm, 100 cm and 200 cm distance. Those measurements were confirmed during 10 Kypho-IORT and 10 breast-IORT patient treatments. RESULTS: The measured dose rates were in the same magnitude for all three paradigms and ranges from 20 μSv/h during a simulated breast-IORT at two meter distance up to 64 mSv/h directly at the surface of a simulated Kypho-IORT. Those measurements result in a circle of controlled area (yearly doses >6 mSv) for each paradigm of about 4 m±2 m. DISCUSSION/ CONCLUSIONS: All three paradigms show comparable dose rates which implies that the radiation protection is straight forward and confirms the flexible use of the INTRABEAM(®) system.
Authors: Arne Mathias Ruder; Laurens Inghelram; Frank Schneider; Gustavo R Sarria; Jürgen Hesser; Frederic Bludau; Udo Obertacke; Frederik Wenz; Yasser Abo-Madyan; Frank A Giordano Journal: J Contemp Brachytherapy Date: 2020-10-30
Authors: Frank A Giordano; Stefanie Brehmer; Yasser Abo-Madyan; Grit Welzel; Elena Sperk; Anke Keller; Frank Schneider; Sven Clausen; Carsten Herskind; Peter Schmiedek; Frederik Wenz Journal: BMC Cancer Date: 2014-12-22 Impact factor: 4.430
Authors: Frederic Bludau; Laura Winter; Grit Welzel; Udo Obertacke; Frank Schneider; Frederik Wenz; Arne Mathias Ruder; Frank A Giordano Journal: Radiat Oncol Date: 2020-11-12 Impact factor: 3.481