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Effects of the murine skull in optoacoustic brain microscopy.

J. Biophotonics 9, 117-123 (2016)
Postprint DOI PMC
Open Access Green
Despite the great promise behind the recent introduction of optoacoustic technology into the arsenal of small-animal neuroimaging methods, a variety of acoustic and light-related effects introduced by adult murine skull severely compromise the performance of optoacoustics in transcranial imaging. As a result, high-resolution noninvasive optoacoustic microscopy studies are still limited to a thin layer of pial microvasculature, which can be effectively resolved by tight focusing of the excitation light. We examined a range of distortions introduced by an adult murine skull in transcranial optoacoustic imaging under both acoustically- and optically-determined resolution scenarios. It is shown that strong low-pass filtering characteristics of the skull may significantly deteriorate the achievable spatial resolution in deep brain imaging where no light focusing is possible. While only brain vasculature with a diameter larger than 60 µm was effectively resolved via transcranial measurements with acoustic resolution, significant improvements are seen through cranial windows and thinned skull experiments. (a) Experimental setup for hybrid acoustic and optical resolution optoacoustic microscopy. (b) Transcranial scan of an adult mouse brain using the optical resolution mode. Scale bar is 375 µm.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Microscopy ; Neuroimaging ; Optoacoustic Technologies ; Skull
Language english
Publication Year 2016
Prepublished in Year 2015
HGF-reported in Year 2015
ISSN (print) / ISBN 1864-063X
e-ISSN 1864-0648
Quellenangaben Volume: 9, Issue: 1-2, Pages: 117-123 Article Number: , Supplement: ,
Publisher Wiley
Reviewing status Peer reviewed
POF-Topic(s) 30205 - Bioengineering and Digital Health
Research field(s) Enabling and Novel Technologies
PSP Element(s) G-505590-001
Scopus ID 84953359677
Scopus ID 84928723895
PubMed ID 25919801
Erfassungsdatum 2015-04-30