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Evaluation of ultrasound sensors for transcranial photoacoustic sensing and imaging

  • Photoacoustic imaging through skull bone causes strong attenuation and distortion of the acoustic wavefront, which diminishes image contrast and resolution. As a result, transcranial photoacoustic measurements in humans have been challenging to demonstrate. In this study, we investigated the acoustic transmission through the human skull to design an ultrasound sensor suitable for transcranial PA imaging and sensing. We measured the frequency dependent losses of human cranial bones ex vivo, compared the performance of a range of piezoelectric and optical ultrasound sensors, and imaged skull phantoms using a PA tomograph based on a planar Fabry–Perot sensor. All transcranial photoacoustic measurements show the typical effects of frequency and thickness dependent attenuation and aberration associated with acoustic propagation through bone. The performance of plano-concave optical resonator ultrasound sensors was found to be highly suitable for transcranial photoacoustic measurements.

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Metadaten
Author:Thomas KirchnerORCiD, Claus VillringerORCiD, Jan LauferORCiD
URN:urn:nbn:de:kobv:526-opus4-17993
DOI (Version of Record):https://doi.org/10.1016/j.pacs.2023.100556
ISSN:2213-5979
Parent Title (English):Photoacoustics
Publisher:Elsevier
Document Type:Article
Language:English
Year of Publication:2023
Publishing Institution:Technische Hochschule Wildau
Release Date:2023/09/25
Tag:Fabry-Perot; optoacoustic; photoacoustic; transcranial; ultrasound sensor
Volume:33
Article Number:100556
Source:Kirchner, T., Villringer, C., & Laufer, J. (2023). Evaluation of ultrasound sensors for transcranial photoacoustic sensing and imaging. Photoacoustics, 33, 100556. doi:10.1016/j.pacs.2023.100556
Faculties an central facilities:Fachbereich Ingenieur- und Naturwissenschaften
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International
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