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The effects of acoustic attenuation in optoacoustic signals.

Phys. Med. Biol. 56, 6129-6148 (2011)
Open Access Green as soon as Postprint is submitted to ZB.
In this paper, it is demonstrated that the effects of acoustic attenuation may play a significant role in establishing the quality of tomographic optoacoustic reconstructions. Accordingly, spatially dependent reduction of signal amplitude leads to quantification errors in the reconstructed distribution of the optical absorption coefficient while signal broadening causes loss of image resolution. Here we propose a correction algorithm for accounting for attenuation effects, which is applicable in both the time and frequency domains. It is further investigated which part of the optoacoustic signal spectrum is practically affected by those effects in realistic imaging scenarios. The validity and benefits of the suggested modelling and correction approaches are experimentally validated in phantom measurements.
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Publication type Article: Journal article
Document type Scientific Article
Keywords no keywords
ISSN (print) / ISBN 0031-9155
e-ISSN 1361-6560
Quellenangaben Volume: 56, Issue: 18, Pages: 6129-6148 Article Number: , Supplement: ,
Publisher Institute of Physics Publishing (IOP)
Publishing Place Bristol
Reviewing status Peer reviewed