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Adaptive All-Optical Ultrasound Imaging Through Temporal Modulation of Excitation Light

Alles, EJ; Colchester, RJ; Desjardins, AE; (2018) Adaptive All-Optical Ultrasound Imaging Through Temporal Modulation of Excitation Light. In: 2018 IEEE International Ultrasonics Symposium (IUS). IEEE Green open access

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Abstract

In this work, we demonstrate how the wide acoustic bandwidths generated by all-optical ultrasound imaging probes can be leveraged to dynamically trade-off image resolution with penetration depth. This dynamic trade-off was achieved through temporal modulation of the excitation light using bandwidth-limited linear chirps. The penetration depth of the all-optical ultrasound imaging probe used here could be arbitrarily set between 2 and 15 mm, to achieve inversely proportional spatial resolutions ranging from 128 - 500 μm (lateral)and 189 - 295 μn (axial). This added versatility in image parameters will enable seamless multi-scale ultrasound imaging that can strongly benefit interventional imaging.

Type: Proceedings paper
Title: Adaptive All-Optical Ultrasound Imaging Through Temporal Modulation of Excitation Light
Event: IEEE International Ultrasonics Symposium (IUS), 22-25 October 2018, Kobe, Japan
ISBN-13: 9781538634257
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ULTSYM.2018.8580194
Publisher version: https://doi.org/10.1109/ULTSYM.2018.8580194
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Ultrasonic imaging , Optical imaging , Optical pulses , Optical sensors , Optical attenuators , Bandwidth, All-optical ultrasound , chirp modulation , resolution , penetration depth , multi-scale imaging
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10068074
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