Dual orientation 16-MHz single-element ultrasound needle transducers for image-guided neurosurgical intervention

Timothy Button, Yun Jiang, Carl Meggs, Daniel Rodriguez Sanmartin, Ye Zhang, Zhen Qiu, Rachael Mcphillips, Syed Osama Mahboob, Han Wang, Robyn Duncan, Giuseppe Schiavone, Roos Eisma, Marc Desmulliez, Sam Eljamel, Sandy Cochran, Christine Demore

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
240 Downloads (Pure)

Abstract

Image-guided surgery is today considered to be of significant importance in neurosurgical applications. However, one of its major shortcomings is its reliance on preoperative image data, which does not account for brain deformations and displacements that occur during surgery. In this work, we propose to tackle this issue through the incorporation of an ultrasound device within the type of biopsy needles commonly used as an interventional tool to provide immediate feedback to neurosurgeons during surgical procedures. To identify the most appropriate path to access a targeted tissue site, single-element transducers that look either forward or sideways have been designed and fabricated. Micromolded 1–3 piezocomposites were adopted as the active materials for feasibility tests and epoxy lenses have been applied to focus the ultrasound beam. Electrical impedance analysis, pulse-echo testing, and wire phantom scanning have been carried out, demonstrating the functionality of the needle transducers at ∼16 MHz. The capabilities of these transducers for intraoperative image guidance were demonstrated by imaging within soft-embalmed cadaveric human brain and fresh porcine brain.
Original languageEnglish
JournalIEEE transactions on ultrasonics, ferroelectrics, and frequency control
Early online date8 Dec 2015
DOIs
Publication statusPublished - Feb 2016

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