Novel technique for high-precision stereotactic irradiation of mouse brains

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Hartmann J, Wölfelschneider J, Stache C, Buslei R, Derer A, Schwarz M, Bäuerle T, Fietkau R, Gaipl U, Bert C, Hoelsken A, Frey B
Zeitschrift: Strahlentherapie und Onkologie
Jahr der Veröffentlichung: 2016
Band: 192
Heftnummer: 11
Seitenbereich: 806-814
ISSN: 0179-7158


Abstract


Small animal irradiation systems were developed for preclinical evaluation of tumor therapy closely resembling the clinical situation. Mostly only clinical LINACs are available, so protocols for small animal partial body irradiation using a conventional clinical system are essential. This study defines a protocol for conformal brain tumor irradiations in mice.CT and MRI images were used to demarcate the target volume and organs at risk. Three 6 MV photon beams were planned for a total dose of 10 fractions of 1.8 Gy. The mouse position in a dedicated applicator was verified by an X-ray patient positioning system before each irradiation. Dosimetric verifications (using ionization chambers and films) were performed. Irradiation-induced DNA damage was analyzed to verify the treatment effects on the cellular level.The defined treatment protocol and the applied fractionation scheme were feasible. The in-house developed applicator was suitable for individual positioning at submillimeter accuracy of anesthetized mice during irradiation, altogether performed in less than 10 min. All mice tolerated the treatment well. Measured dose values perfectly matched the nominal values from treatment planning. Cellular response was restricted to the target volume.Clinical LINAC-based irradiations of mice offer the potential to treat orthotopic tumors conformably. Especially with respect to lateral penumbra, dedicated small animal irradiation systems exceed the clinical LINAC solution.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bäuerle, Tobias Prof. Dr.
Professur für Multimodale Bildgebung in der präklinischen Forschung
Bert, Christoph Prof. Dr. rer. nat.
Professur für Med. Strahlenphysik
Derer, Anja Dr. rer. nat.
Strahlenklinik
Fietkau, Rainer Prof. Dr.
Lehrstuhl für Strahlentherapie
Frey, Benjamin PD Dr.
Strahlenklinik
Gaipl, Udo Prof. Dr.
Strahlenklinik
Hartmann, Josefin
Strahlenklinik
Schwarz, Martin
Professur für Experimentelle Augenheilkunde
Stache, Christina
Lehrstuhl für Neuropathologie
Wölfelschneider, Jens
Strahlenklinik


Zitierweisen

APA:
Hartmann, J., Wölfelschneider, J., Stache, C., Buslei, R., Derer, A., Schwarz, M.,... Frey, B. (2016). Novel technique for high-precision stereotactic irradiation of mouse brains. Strahlentherapie und Onkologie, 192(11), 806-814. https://dx.doi.org/10.1007/s00066-016-1014-8

MLA:
Hartmann, Josefin, et al. "Novel technique for high-precision stereotactic irradiation of mouse brains." Strahlentherapie und Onkologie 192.11 (2016): 806-814.

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Zuletzt aktualisiert 2019-19-03 um 06:03