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Journal of Biomedical Optics

Direct three-dimensional ultrasound-to-video registration using photoacoustic markers
Author(s): Alexis Cheng; Jin U. Kang; Russell H. Taylor; Emad M. Boctor
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Paper Abstract

Modern surgical procedures often have a fusion of video and other imaging modalities to provide the surgeon with information support. This requires interventional guidance equipment and surgical navigation systems to register different tools and devices together, such as stereoscopic endoscopes and ultrasound (US) transducers. In this work, the focus is specifically on the registration between these two devices. Electromagnetic and optical trackers are typically used to acquire this registration, but they have various drawbacks typically leading to target registration errors (TRE) of approximately 3 mm. We introduce photoacoustic markers for direct three-dimensional (3-D) US-to-video registration. The feasibility of this method was demonstrated on synthetic and ex vivo porcine liver, kidney, and fat phantoms with an air-coupled laser and a motorized 3-D US probe. The resulting TRE for each experiment ranged from 380 to 850 μm with standard deviations ranging from 150 to 450 μm. We also discuss a roadmap to bring this system into the surgical setting and possible challenges along the way.

Paper Details

Date Published: 17 June 2013
PDF: 10 pages
J. Biomed. Opt. 18(6) 066013 doi: 10.1117/1.JBO.18.6.066013
Published in: Journal of Biomedical Optics Volume 18, Issue 6
Show Author Affiliations
Alexis Cheng, Johns Hopkins Univ. (United States)
Jin U. Kang, Johns Hopkins Univ. (United States)
Russell H. Taylor, Johns Hopkins Univ. (United States)
Emad M. Boctor, Johns Hopkins Outpatient Ctr. (United States)

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