Ansari, R;
Zhang, E;
Desjardins, AE;
Beard, PC;
(2017)
All-optical endoscopic probe for high resolution 3D photoacoustic tomography.
In:
Photons Plus Ultrasound: Imaging and Sensing 2017.
Society of Photo-Optical Instrumentation Engineers (SPIE): San Francisco, California, United States.
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Abstract
A novel all-optical forward-viewing photoacoustic probe using a flexible coherent fibre-optic bundle and a Fabry- Perot (FP) ultrasound sensor has been developed. The fibre bundle, along with the FP sensor at its distal end, synthesizes a high density 2D array of wideband ultrasound detectors. Photoacoustic waves arriving at the sensor are spatially mapped by optically scanning the proximal end face of the bundle in 2D with a CW wavelength-tunable interrogation laser. 3D images are formed from the detected signals using a time-reversal image reconstruction algorithm. The system has been characterized in terms of its PSF, noise-equivalent pressure and field of view. Finally, the high resolution 3D imaging capability has been demonstrated using arbitrary shaped phantoms and duck embryo.
| Type: | Proceedings paper |
|---|---|
| Title: | All-optical endoscopic probe for high resolution 3D photoacoustic tomography |
| ISBN-13: | 9781510605695 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1117/12.2250617 |
| Publisher version: | http://dx.doi.org/10.1117/12.2250617 |
| Language: | English |
| Additional information: | © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Photoacoustic tomography, photoacoustic endoscopy, Coherent fibre bundle, Image bundle, FabryP´erot sensors. |
| 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/1561643 |
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