Trans-cranial focused ultrasound without hair shaving: feasibility study in an ex vivo cadaver model - Inserm - Institut national de la santé et de la recherche médicale Access content directly
Journal Articles Journal of Therapeutic Ultrasound Year : 2013

Trans-cranial focused ultrasound without hair shaving: feasibility study in an ex vivo cadaver model

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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Dates and versions

inserm-00923402 , version 1 (02-01-2014)

Identifiers

  • HAL Id : inserm-00923402 , version 1

Cite

Matthew Eames, Arik Hananel, John Snell, Neal Kassell, Jean-Francois Aubry. Trans-cranial focused ultrasound without hair shaving: feasibility study in an ex vivo cadaver model. Journal of Therapeutic Ultrasound, 2013, 1 (1), pp.24. ⟨inserm-00923402⟩
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