Rapid scanning wide-field clutter elimination in epi-optoacoustic imaging using comb LOVIT.
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Date
2018-06-01Author
Petrosyan, T
Theodorou, M
Bamber, J
Frenz, M
Jaeger, M
Type
Journal Article
Metadata
Show full item recordAbstract
Epi-style optoacoustic (OA) imaging provides flexibility by integrating the irradiation optics and ultrasound receiver, yet clutter generated by optical absorption near the probe obscures deep OA sources. Localised vibration tagging (LOVIT) retrieves OA signal from images that are acquired with and without a preceding ultrasonic pushing beam: Radiation force leads to a phase shift of signals coming from the focal area resulting in their visibility in a difference image, whereas clutter from outside the pushing beam is eliminated. Disadvantages of a single-focus approach are residual clutter from inside the pushing beam above the focus, and time-intensive scanning of the focus to retrieve a large field-of-view. To speed up acquisition, we propose to create multiple foci in parallel, forming comb-shaped ARF patterns. By subtracting OA images obtained with interleaved combs, this technique moreover results in greatly improved clutter reduction in phantoms mimicking optical, acoustic and elastic properties of breast tissue.
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https://doi.org/10.1016/j.pacs.2018.02.001Collections
Research team
Ultrasound & Optical Imaging
Language
eng
Date accepted
2018-02-13
License start date
2018-06
Citation
Photoacoustics, 2018, 10 pp. 20 - 30
Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG