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

被引：27
作者：
Eames, Matthew D. C. [1 ]
Hananel, Arik [1 ,2 ]
Snell, John W. [1 ,3 ]
Kassell, Neal F. [1 ,3 ]
Aubry, Jean-Francois [2 ,4 ]
机构：
[1] Focused Ultrasound Fdn, Charlottesville, VA 22903 USA
[2] Univ Virginia, Dept Radiat Oncol, Charlottesville, VA 22908 USA
[3] Univ Virginia, Dept Neurosurg, Charlottesville, VA 22908 USA
[4] ESPCI ParisTech, CNRS UMR 7587, Inst Langevin Ondes & Images, Inserm U979, F-75238 Paris, France
来源：
JOURNAL OF THERAPEUTIC ULTRASOUND | 2013年 / 1卷
关键词：
tcMRgFUS; Brain; Hair; MR thermometry;
D O I：
10.1186/2050-5736-1-24
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
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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页数：6
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