Animal Models in Microbeam Radiation Therapy: A Scoping Review

Author:

Fernandez-Palomo Cristian1ORCID,Fazzari Jennifer1,Trappetti Verdiana1ORCID,Smyth Lloyd2ORCID,Janka Heidrun3,Laissue Jean1ORCID,Djonov Valentin1

Affiliation:

1. Institute of Anatomy, University of Bern, 3012 Bern, Switzerland

2. Department of Obstetrics & Gynaecology, University of Melbourne, 3057 Parkville, Australia

3. Medical Library, University Library Bern, University of Bern, 3012 Bern, Switzerland

Abstract

Background: Microbeam Radiation Therapy (MRT) is an innovative approach in radiation oncology where a collimator subdivides the homogeneous radiation field into an array of co-planar, high-dose beams which are tens of micrometres wide and separated by a few hundred micrometres. Objective: This scoping review was conducted to map the available evidence and provide a comprehensive overview of the similarities, differences, and outcomes of all experiments that have employed animal models in MRT. Methods: We considered articles that employed animal models for the purpose of studying the effects of MRT. We searched in seven databases for published and unpublished literature. Two independent reviewers screened citations for inclusion. Data extraction was done by three reviewers. Results: After screening 5688 citations and 159 full-text papers, 95 articles were included, of which 72 were experimental articles. Here we present the animal models and pre-clinical radiation parameters employed in the existing MRT literature according to their use in cancer treatment, non-neoplastic diseases, or normal tissue studies. Conclusions: The study of MRT is concentrated in brain-related diseases performed mostly in rat models. An appropriate comparison between MRT and conventional radiotherapy (instead of synchrotron broad beam) is needed. Recommendations are provided for future studies involving MRT.

Funder

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Krebsliga Schweiz

Bernische Krebsliga

Publisher

MDPI AG

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