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Interventional multispectral photoacoustic imaging of the epidural space

Xia, W; West, S; Nikitichev, D; Ourselin, S; Desjardins, A; (2017) Interventional multispectral photoacoustic imaging of the epidural space. Presented at: SPIE BIoS, Photonics West 2017, San Francisco, United States. Green open access

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Injections of anaesthetics into the epidural space are widely performed to relieve pain. Here, for the first time, we investigated the use of photoacoustic imaging to identify the epidural space using an interventional multispectral photoacoustic (IMPA) imaging system. Excitation light was delivered through an optical fibre positioned within a needle to illuminate the epidural space in a swine model. Spectral unmixing of the images revealed prominent distributions of lipids and haemoglobin in the epidural space at a depth of 35 mm. We conclude that IMPA could be a useful imaging modality to guide placement of needles into the epidural space.

Type: Poster
Title: Interventional multispectral photoacoustic imaging of the epidural space
Event: SPIE BIoS, Photonics West 2017
Location: San Francisco, United States
Dates: 30 January 2017 - 06 February 2017
Open access status: An open access version is available from UCL Discovery
Publisher version: http://spie.org/conferences-and-exhibitions/photon...
Language: English
Keywords: Photoacoustic imaging, spectroscopy, epidural space.
URI: http://discovery.ucl.ac.uk/id/eprint/1544074
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