title: Dual Orientation 16-MHz Single-Element Ultrasound Needle Transducers for Image-Guided Neurosurgical Intervention.
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 [Formula: see text]. The capabilities of these transducers for intraoperative image guidance were demonstrated by imaging within soft-embalmed cadaveric human brain and fresh porcine brain.
authors.forename: Yun
authors.initials: Y
authors.lastname: Jiang
authors.forename: Zhen
authors.initials: Z
authors.lastname: Qiu
authors.forename: Rachael
authors.initials: R
authors.lastname: McPhillips
authors.forename: Carl
authors.initials: C
authors.lastname: Meggs
authors.forename: Syed Osama
authors.initials: SO
authors.lastname: Mahboob
authors.forename: Han
authors.initials: H
authors.lastname: Wang
authors.forename: Robyn
authors.initials: R
authors.lastname: Duncan
authors.forename: Daniel
authors.initials: D
authors.lastname: Rodriguez-Sanmartin
authors.forename: Ye
authors.initials: Y
authors.lastname: Zhang
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Schiavone
authors.forename: Roos
authors.initials: R
authors.lastname: Eisma
authors.forename: Marc P Y
authors.initials: MP
authors.lastname: Desmulliez
authors.forename: Sam
authors.initials: S
authors.lastname: Eljamel
authors.forename: Sandy
authors.initials: S
authors.lastname: Cochran
authors.forename: Tim W
authors.initials: TW
authors.lastname: Button
authors.forename: Christine E M
authors.initials: CE
authors.lastname: Demore
mesh_terms: D000818:Animals; D001921:Brain / Q000601:surgery; D004867:Equipment Design; D006801:Humans; D009339:Needles; D019635:Neurosurgical Procedures / Q000295:instrumentation*; D019047:Phantoms, Imaging; D025321:Surgery, Computer-Assisted / Q000295:instrumentation*; D013552:Swine; D014159:Transducers; D018084:Ultrasonography, Interventional / Q000295:instrumentation*