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    • 9. 发明公开
    • SYSTEM AND METHOD FOR CONTROLLING FOCUSED ULTRASOUND TREATMENT
    • 系列VERFAHREN ZUR STEUERUNG EINER FOKUSSIERTEN ULTRASCHALLBEHANDLUNG
    • EP2726152A4
    • 2015-06-24
    • EP12804850
    • 2012-06-29
    • SUNNYBROOK HEALTH SCIENCES CT
    • O'REILLY MEAGHAN ANNEHYNYNEN KULLERVO HENRIK
    • A61N7/00
    • A61B8/481A61B8/0808A61B8/4488A61B2017/00106A61B2090/374A61N7/02A61N2007/0091A61N2007/0095
    • A system and method for controlling the delivery of ultrasound energy to a subject is provided. In particular, such a system and method are capable of safely disrupting the blood-brain barrier. Ultrasound energy is delivered to produce cavitation of an ultrasound contrast agent at a selected pressure value. An acoustic signal is acquired following cavitation, from which a signal spectrum is produced. The signal spectrum is analyzed for the presence of harmonics, such as subharmonics or ultraharmonics. When subharmonics or ultraharmonics are present, the pressure value is decreased for subsequent sonications. If a previous sonication resulted in no subharmonics or ultraharmonics being generated, then the pressure value may be increased. In this manner, the blood-brain barrier can be advantageously disrupted while mitigating potentially injurious effects of the sonication.
    • 提供了一种用于控制对受试者的超声能量递送的系统和方法。 特别地,这种系统和方法能够安全地破坏血脑屏障。 输送超声能量以在选定的压力值下产生超声造影剂的空化。 在空化后获得声信号,产生信号频谱。 分析信号频谱是否存在谐波,如次谐波或超谐波。 当存在次谐波或超谐波时,随后的超声波的压力值会降低。 如果先前的超声处理导致不产生亚谐波或超谐波,则可以增加压力值。 以这种方式,可以有利地破坏血脑屏障,同时减轻超声处理的潜在有害影响。