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Proceedings Paper

Characterization of optically actuated MRI-compatible active needles for medical interventions
Author(s): Richard J. Black; Seokchang Ryu; Behzad Moslehi; Joannes M. Costa
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Paper Abstract

The development of a Magnetic Resonance Imaging (MRI) compatible optically-actuated active needle for guided percutaneous surgery and biopsy procedures is described. Electrically passive MRI-compatible actuation in the small diameter needle is provided by non-magnetic materials including a shape memory alloy (SMA) subject to precise fiber laser operation that can be from a remote (e.g., MRI control room) location. Characterization and optimization of the needle is facilitated using optical fiber Bragg grating (FBG) temperature sensors arrays. Active bending of the needle during insertion allows the needle to be accurately guided to even relatively small targets in an organ while avoiding obstacles and overcoming undesirable deviations away from the planned path due to unforeseen or unknowable tissue interactions. This feature makes the needle especially suitable for use in image-guided surgical procedures (ranging from MRI to CT and ultrasound) when accurate targeting is imperative for good treatment outcomes. Such interventions include reaching small tumors in biopsies, delineating freezing areas in, for example, cryosurgery and improving the accuracy of seed placement in brachytherapy. Particularly relevant are prostate procedures, which may be subject to pubic arch interference. Combining diagnostic imaging and actuation assisted biopsy into one treatment can obviate the need for a second exam for guided biopsy, shorten overall procedure times (thus increasing operating room efficiencies), address healthcare reimbursement constraints and, most importantly, improve patient comfort and clinical outcomes.

Paper Details

Date Published: 15 April 2014
PDF: 8 pages
Proc. SPIE 9058, Behavior and Mechanics of Multifunctional Materials and Composites 2014, 90580J (15 April 2014); doi: 10.1117/12.2058475
Show Author Affiliations
Richard J. Black, Intelligent Fiber Optic Systems Corp. (United States)
Seokchang Ryu, Intelligent Fiber Optic Systems Corp. (United States)
Behzad Moslehi, Intelligent Fiber Optic Systems Corp. (United States)
Joannes M. Costa, Intelligent Fiber Optic Systems Corp. (United States)

Published in SPIE Proceedings Vol. 9058:
Behavior and Mechanics of Multifunctional Materials and Composites 2014
Nakhiah C. Goulbourne; Hani E. Naguib, Editor(s)

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