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Photoacoustic imaging of intracardiac medical devices using internal illumination of carbon nanotube / PDMS composite coatings

Research output: Chapter in Book/Report/Conference proceedingConference paper

W. Xia, S. Noimark, E. Maneas, I. Parkin, S. Ourselin, M Finlay, A. Desjardins

Original languageEnglish
Title of host publicationPhotons Plus Ultrasound: Imaging and Sensing 2017, Photonics West
Publication statusPublished - 30 Jan 2017

King's Authors

Abstract

Accurate localisation of medical devices is of crucial importance for a wide range of ultrasound-guided interventions. In this study, we investigated visualisation of medical devices by photoacoustic excitation of optically absorbing coatings. Photoacoustic excitation light was provided through optical fibres positioned within a cardiac needle and a steerable-tip catheter. Using a swine heart model, photoacoustic and B-mode ultrasound images were received with a clinical ultrasound scanner in conjunction with a transoesophageal imaging probe. In the photoacoustic images, prominent signals were obtained from the coatings. This study demonstrated that photoacoustic imaging could play a useful role with medical device imaging.

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