Ontology type: schema:ScholarlyArticle Open Access: True
2019-12
AUTHORSB. Yudhistiara, F. Zwicker, K. J. Weber, P. E. Huber, A. Ruehle, S. Brons, P. Haering, J. Debus, S. H. Hauswald
ABSTRACTBACKGROUND: The implementation of magnetic resonance imaging (MRI) guided radiotherapy (RT) continues to increase. Very limited in-vitro data on the interaction of ionizing radiation and magnetic fields (MF) have been published. In these experiments we focused on the radiation response in a MF of the TK6 human lymphoblastoid cells which are known to be highly radiosensitive due to efficient radiation-induced apoptosis. METHODS: Clonogenicity was determined 12-14 days after irradiation with 1-4 Gy 6 MV photons with or without a 1.0 Tesla MF. Furthermore, alterations in cell cycle distribution and rates of radiation induced apoptosis (FACS analysis of cells with sub-G1 DNA content) were analyzed. RESULTS: Clonogenic survival showed an exponential dose-dependence, and the radiation sensitivity parameter (α = 1.57/Gy) was in accordance with earlier reports. Upon comparing the clonogenic survival between the two groups, identical results within error bars were obtained. The survival fractions at 2 Gy were 9% (without MF) and 8.5% (with MF), respectively. CONCLUSION: A 1.0 Tesla MF does not affect the clonogenicity of TK6 cells irradiated with 1-4 Gy 6MV photons. This supports the use of MRI guided RT, however ongoing research on the interaction of MF and radiotherapy is warranted. More... »
PAGES11
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DOIhttp://dx.doi.org/10.1186/s13014-019-1212-5
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