Detecting occlusion inside a ventricular catheter using photoacoustic imaging through skull

Behnoosh Tavakoli; Xiaoyu Guo; Russell H. Taylor; Jin U. Kang; Emad M. Boctor

doi:10.1117/12.2040805

3 March 2014 Detecting occlusion inside a ventricular catheter using photoacoustic imaging through skull

Behnoosh Tavakoli, Xiaoyu Guo, Russell H. Taylor, Jin U. Kang, Emad M. Boctor

Proceedings Volume 8943, Photons Plus Ultrasound: Imaging and Sensing 2014; 89434O (2014) https://doi.org/10.1117/12.2040805
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

Ventricular catheters are used to treat hydrocephalus by diverting the excess of the cerebrospinal fluid (CSF) to the reabsorption site so as to regulate the intracranial pressure. The failure rate of these shunts is extremely high due to the ingrown tissue that blocks the CSF flow. We have studied a method to image the occlusion inside the shunt through the skull. In this approach the pulsed laser light coupled to the optical fiber illuminate the occluding tissue inside the catheter and an external ultrasound transducer is applied to detect the generated photoacoustic signal. The feasibility of this method is investigated using a phantom made of ovis aries brain tissue and adult human skull. We were able to image the target inside the shunt located 20mm deep inside the brain through about 4mm thick skull bone. This study could lead to the development of a simple, safe and non-invasive device for percutaneous restoration of patency to occluded shunts. This will eliminate the need of the surgical replacement of the occluded catheters which expose the patients to risks including hemorrhage and brain injury.

Citation Download Citation

Behnoosh Tavakoli, Xiaoyu Guo, Russell H. Taylor, Jin U. Kang, and Emad M. Boctor "Detecting occlusion inside a ventricular catheter using photoacoustic imaging through skull", Proc. SPIE 8943, Photons Plus Ultrasound: Imaging and Sensing 2014, 89434O (3 March 2014); https://doi.org/10.1117/12.2040805

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available