
Although the merits of Preclinical Hybrid Imaging (PHI) and CLEM are well-established, both approaches would benefit from standardization of protocols, ontologies and data handling, and the development of optimized and advanced implementations. The two best-established CMI implementations for small animals and model organisms are hardware-fused platforms in preclinical imaging (Hybrid Imaging) and Correlated Light and Electron Microscopy (CLEM) in biological imaging. CMI allows to describe biomedical processes within their overall spatio-temporal context and gain a mechanistic understanding of cells, tissues, diseases or organisms by untangling their molecular mechanisms within their native environment. Correlated Multimodal Imaging (CMI) gathers information about exactly the same specimen with two or more complementary modalities that-in combination-create a composite and complementary view of the sample (including insights into structure, function, dynamics and molecular composition). The frontiers of bioimaging are currently being pushed toward the integration and correlation of several modalities to tackle biomedical research questions holistically and across multiple scales. 18Preclinical Molecular Imaging, BioImaging Austria/CMI, AIT Austrian Institute of Technology GmbH, Seibersdorf, Austria.17VetCore Facility for Research, Imaging Unit, BioImaging Austria/CMI, University of Veterinary Medicine Vienna, Vienna, Austria.16Division of Anatomy, Center for Anatomy and Cell Biology, BioImaging Austria/CMI, Medical University of Vienna, Vienna, Austria.



2Université de Nantes, CNRS, INSERM, l'institut du thorax, Nantes, France.1BioImaging Austria/CMI, Vienna BioCenter Core Facilities, Vienna, Austria.Weninger 16, Martin Glösmann 17, Stephan Handschuh 17 and Thomas Wanek 18 Mannheim 7,8,9, Paul Slezak 10, Angelika Unterhuber 11, Martina Marchetti-Deschmann 12, Manfred Ogris 13, Katja Bühler 14, Dror Fixler 15, Stefan H. Andreas Walter 1 *, Perrine Paul-Gilloteaux 2,3, Birgit Plochberger 4, Ludek Sefc 5, Paul Verkade 6, Julia G.
