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1 August 2017 Annular array detector for large depth of field photoacoustic macroscopy
Paul R. Torke, Robert Nuster, Guenther Paltauf
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Proceedings Volume 10415, Opto-Acoustic Methods and Applications in Biophotonics III; 104150C (2017) https://doi.org/10.1117/12.2286255
Event: European Conferences on Biomedical Optics, 2017, Munich, Germany
Abstract
A detector design is presented for scanning photoacoustic macroscopy that is based on several concentric ring-shaped elements made of PVDF. Compared to a spherical ultrasound lens, the array provides a long focal depth due to its dynamic focusing ability. It is shown that with ring elements that are inclined towards the region of interest in the sample, significantly better sensitivity and resolution are achieved compared to a planar array. This is demonstrated in a simulation. Based on the simulation results, an array detector was manufactured and its performance was tested in first phantom experiments.
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Paul R. Torke, Robert Nuster, and Guenther Paltauf "Annular array detector for large depth of field photoacoustic macroscopy", Proc. SPIE 10415, Opto-Acoustic Methods and Applications in Biophotonics III, 104150C (1 August 2017); https://doi.org/10.1117/12.2286255
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KEYWORDS
Sensors
Detector arrays
Microscopy
Photoacoustic imaging
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