Trans-cranial Focused Ultrasound Without Hair Shaving: Feasibility Study in an Ex Vivo Cadaver Model

Overview

Journal J Ther Ultrasound

Publisher Biomed Central

Date 2014 Dec 17

PMID 25512865

Citations 14

Authors

Matthew Dc Eames

Arik Hananel

John W Snell

Neal F Kassell

Jean-Francois Aubry

Affiliations

Soon will be listed here.

Abstract

In preparing a patient for a trans-cranial magnetic resonance (MR)-guided focused ultrasound procedure, current practice is to shave the patient's head on treatment day. Here we present an initial attempt to evaluate the feasibility of trans-cranial focused ultrasound in an unshaved, ex vivo human head model. A human skull filled with tissue-mimicking phantom and covered with a wig made of human hair was sonicated using 220- and 710-kHz head transducers to evaluate the feasibility of acoustic energy transfer. Heating at the focal point was measured by MR proton resonance shift thermometry. Results showed that the hair had a negligible effect on focal spot thermal rise at 220 kHz and a 17% drop in temperature elevation when using 710 kHz.

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