Watt, Fraser;
Noimark, sacha;
Desjardins, adrien;
Beard, paul;
Alles, Erwin;
(2023)
Fabrication of an Array of Eccentric Sources for Freehand Optical Ultrasound Imaging.
In:
Proceedings of the IEEE International Ultrasonics Symposium.
IEEE: Venice, Italy.
(In press).
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Abstract
Free-hand optical ultrasound (OpUS) imaging is an emerging ultrasound imaging paradigm that utilises an array of fiber-optic sources and a fiber-optic detector to achieve video-rate, real-time imaging, with a flexible probe. Previous designs used multimode fibers to achieve circular OpUS sources that emitted divergent fields propagating away from the imaging plane, resulting in image artefacts and reduced penetration depths. The directivity of the emitted ultrasound field can be optimised by changing the trasnducer shape, moving to eccentric transducers can improve elevational confinement and associated aretefacts. In this work, methods for fabricating suitably eccentric waveguides that can be placed distally to a fiber-bundle array probe are presented. In addition, the scalability of one of these methods is demonstrated by fabricating a ten-element array of waveguides.
| Type: | Proceedings paper |
|---|---|
| Title: | Fabrication of an Array of Eccentric Sources for Freehand Optical Ultrasound Imaging |
| Event: | IEEE International Ultrasonics Symposium |
| Dates: | 10 Oct 2022 - 13 Oct 2022 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://2022.ieee-ius.org/ |
| 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: | Optical Ultrasound, Waveguides, Source Directivity, Rapid Prototyping |
| 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-pp.ucl.ac.uk/id/eprint/10159004 |
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