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| Verfasst von: | Dokić, Ivana [VerfasserIn]  |
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| | Meister, Sarah [VerfasserIn] |
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| | Bojcevski, Jovana [VerfasserIn] |
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| | Tessonnier, Thomas [VerfasserIn] |
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| | Walsh, Dietrich [VerfasserIn] |
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| | Knoll, Maximilian [VerfasserIn] |
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| | Mein, Stewart [VerfasserIn] |
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| | Tang, Zili [VerfasserIn] |
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| | Vogelbacher, Lena [VerfasserIn] |
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| | Rittmüller, Claudia [VerfasserIn] |
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| | Moustafa, Mahmoud [VerfasserIn] |
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| | Krunic, Damir [VerfasserIn] |
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| | Brons, Stephan [VerfasserIn] |
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| | Haberer, Thomas [VerfasserIn] |
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| | Debus, Jürgen [VerfasserIn] |
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| | Mairani, Andrea [VerfasserIn] |
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| | Abdollahi, Amir [VerfasserIn] |
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| Titel: | Neuroprotective effects of ultra-high dose rate FLASH Bragg peak proton irradiation |
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| Verf.angabe: | Ivana Dokic, Sarah Meister, Jovana Bojcevski, Thomas Tessonnier, Dietrich Walsh, Maximilian Knoll, Stewart Mein, Zili Tang, Lena Vogelbacher, Claudia Rittmueller, Mahmoud Moustafa, Damir Krunic, Stephan Brons, Thomas Haberer, Jürgen Debus, Andrea Mairani, and Amir Abdollahi |
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| E-Jahr: | 2022 |
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| Jahr: | 20 February 2022 |
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| Umfang: | 10 S. |
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| Fussnoten: | Gesehen am 17.09.2022 |
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| Titel Quelle: | Enthalten in: International journal of radiation oncology, biology, physics |
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| Ort Quelle: | Amsterdam [u.a.] : Elsevier Science, 1975 |
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| Jahr Quelle: | 2022 |
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| Band/Heft Quelle: | 113(2022), 3, Seite 614-623 |
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| ISSN Quelle: | 1879-355X |
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| Abstract: | Purpose - To investigate brain tissue response to ultra-high dose rate (uHDR, FLASH) and standard dose rate (SDR) proton irradiations in the Bragg peak region. - Methods and Materials - Active scanning uHDR delivery was established for proton beams for investigation of dose rate effects between clinical SDR and uHDR at ∼10 Gy in the Bragg peak region (dose-averaged linear energy transfer [LETD] ranging from 4.5 to 10.2 keV µm-1 ). Radiation- induced injury of neuronal tissue was assessed by studying the DNA double strand break repair kinetics surrogated by nuclear γH2AX staining (radiation induced foci [RIF]), microvascular density and structural integrity (MVD, CD31+ endothelium), and inflammatory microenvironmental response (CD68+ microglia/macrophages and high mobility group box protein 1[HMGB]) in healthy C57BL/6 mouse brains. - Results - Averaged dose rates achieved were 0.17 Gy/s (SDR) and 120 Gy/s (uHDR). The fraction of RIF-positive cells increased after SDR ∼10-fold, whereas a significantly lower fraction of RIF-positive cells was found after uHDR versus SDR (∼2 fold, P < .0001). Moreover, uHDR substantially preserved the microvascular architecture and reduced microglia/macrophage regulated associated inflammation as compared with SDR. - Conclusions - The feasibility of uHDR raster scanning proton irradiation is demonstrated to elicit FLASH sparing neuroprotective effects compared to SDR in a preclinical in vivo model. |
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| DOI: | doi:10.1016/j.ijrobp.2022.02.020 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1016/j.ijrobp.2022.02.020 |
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| | Volltext: https://www.sciencedirect.com/science/article/pii/S0360301622001663 |
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| | DOI: https://doi.org/10.1016/j.ijrobp.2022.02.020 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1816895679 |
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| Verknüpfungen: | → Zeitschrift |
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Neuroprotective effects of ultra-high dose rate FLASH Bragg peak proton irradiation / Dokić, Ivana [VerfasserIn]; 20 February 2022 (Online-Ressource)
