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    • 3. 发明申请
    • Enhancement agent for high intensity focused ultrasound treatment and method for screening the same
    • 高强度聚焦超声治疗增强剂及其筛选方法
    • US20090117052A1
    • 2009-05-07
    • US11794928
    • 2005-08-30
    • Zhibiao WangFaqi LiYanbing XiaoZiwen XiaoLiping LiuZhilong Wang
    • Zhibiao WangFaqi LiYanbing XiaoZiwen XiaoLiping LiuZhilong Wang
    • A61B8/00A61N7/00
    • A61K41/0052A61K41/0028
    • The present invention discloses an enhancement agent for high intensity focused ultrasound (HIFU) treatment, which is administered to a patient before HIFU treatment and can reduce the level of EEF at the target location to be treated with HIFU. EEF is presented by the expression: EEF=ηPt/V (unit: J/mm3), and refers to the HIFU energy needed to effectively treat a tumor per unit volume of the tumor, wherein, η=0.7; P refers to the total acoustic power of HIFU source (unit: W); t refers to the total time of HIFU treatment (unit: s); V refers to the volume of HIFU-induced lesions (unit: mm3). If the amount of EEF at the target location before administration of the enhancement agent is defined as EEF(base) and the amount of EEF at the target location after administration of the enhancement agent is defined as EEF(measurement), the ratio between EEF(base) and EEF(measurement) is more than 1, preferably more than 2, and more preferably over 4. The use of the enhancement agent for HIFU treatment of the present invention makes it possible to treat deep-seated tumors. In addition, patients with hepatic tumors can be effectively treated without removal of ribs. Accordingly, the present invention discloses methods for increasing acoustic energy deposition at target location during HIFU treatment and screening the enhancement agents for HIFU treatment.
    • 本发明公开了一种用于高强度聚焦超声(HIFU)治疗的增强剂,其在HIFU治疗之前施用于患者,并且可以降低用HIFU治疗的目标位置处的EEF水平。 EEF由以下表达式表示:EEF = etaPt / V(单位:J / mm 3),并且是指每单位体积肿瘤有效治疗肿瘤所需的HIFU能量,其中eta = 0.7; P指HIFU源的总声功率(单位:W); t指HIFU治疗的总时间(单位:s); V指HIFU诱导的病变体积(单位:mm3)。 如果将增强剂施用前的目标位置处的EEF量定义为EEF(碱基),并且将施用增效剂后的目标位置处的EEF的量定义为EEF(测定),则EEF 碱)和EEF(测量)大于1,优选大于2,更优选超过4.使用本发明的HIFU治疗用增强剂可以治疗深层肿瘤。 此外,肝脏肿瘤患者可以有效地治疗,无需排除肋骨。 因此,本发明公开了在HIFU处理期间增加目标位置处的声能沉积并筛选用于HIFU处理的增强剂的方法。