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Open Access Green as soon as Postprint is submitted to ZB.
Improved optoacoustic microscopy through three-dimensional spatial impulse response synthetic aperture focusing technique.
Opt. Lett. 39, 3390-3393 (2014)
Synthetic aperture focusing technique (SAFT) is effective in restoring lateral resolution of ultrasonic images for scans with focusing-related distortions. Although successfully applied in pulse-echo ultrasonics, the physical nature of an optoacoustic modality requires a modified algorithm to return accurate results. The SIR-SAFT method reported here uses the spatial impulse response (SIR) of the transducer to weight the contributions to the SAFT and is tailored to provide significant resolution and signal gains for out-of-focus sources in scanning optoacoustic microscopy systems. Furthermore, the SIR-SAFT is implemented in full three dimensions, applicable to signals both far of and at the focus of the ultrasonic detector. The method has been further shown to outperform conventional SAFT algorithms for both simulated and experimental optoacoustic data.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Photoacoustic Microscopy
ISSN (print) / ISBN
0146-9592
e-ISSN
1539-4794
Journal
Optics Letters
Quellenangaben
Volume: 39,
Issue: 12,
Pages: 3390-3393
Publisher
Optical Society of America (OSA)
Publishing Place
Washington
Reviewing status
Peer reviewed
Institute(s)
Institute of Biological and Medical Imaging (IBMI)