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

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

Matthew Eames ¹ Arik Hananel ^{1, 2, *} John Snell ^{1, 3} Neal Kassell ^{1, 3} Jean-Francois Aubry ^{2, 4}

* Auteur correspondant

1 Extramural Research

2 Department of Radiation Oncology

3 Department of Neurosurgery

4 Physique des ondes pour la médecine

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.

Keywords : tcMRgFUS Brain Hair MR thermometry

Type de document :

Article dans une revue

Journal of Therapeutic Ultrasound, BioMed Central, 2013, 1 (1), pp.24

Domaine :

Sciences du Vivant [q-bio] / Ingénierie biomédicale / Médecine nucléaire

Liste complète des métadonnées

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https://www.hal.inserm.fr/inserm-00923402
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Soumis le : jeudi 2 janvier 2014 - 17:07:19
Dernière modification le : vendredi 4 janvier 2019 - 17:33:27
Document(s) archivé(s) le : samedi 8 avril 2017 - 10:20:18

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

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

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376

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