公开(公告)号：US06824518B2

公开(公告)日：2004-11-30

申请号：US10304350

申请日：2002-11-26

申请人： Patrick L. Von Behren ,  Alampallam R. Ramachandran ,  Zoran B. Banjanin ,  Wayne J. Gueck

发明人： Patrick L. Von Behren ,  Alampallam R. Ramachandran ,  Zoran B. Banjanin ,  Wayne J. Gueck

IPC分类号： A61B800

CPC分类号： A61B8/00 ,  A61B8/467 ,  A61B8/543 ,  A61B8/546 ,  G01S7/52019 ,  G01S15/895

摘要： Methods and systems for improving an ultrasound image quality are provided. On demand transmission of unsustainably high power ultrasonic pulses are temporary or spatially interleaved with low power, zero power, or standard ultrasonic pulses. In response to a user initiated trigger, a physiological trigger, a system trigger, or external equipment trigger, the unsustainably high power pulses provide better signal-to-noise ratio and/or allow increased imaging frequencies for difficult to image patients in any of various modes, such as B-modes, harmonic B-mode responsive to tissue or contrast agent, or color flow modes. Unsustainably high power ultrasonic pulses cause an increase in the tissue temperature within the body and at the interface between the transducer and the skin. Standard imagining or standard high power pulses may increase either temperature by around 6° C., such as from a body normal 37° C. to an average of 43° C. over time. The unsustainably high power ultrasonic pulses may cause the temperature to exceed 43° C. for a limited time period. For example, the in-situ temperature may be increased to 50° C. for one second, but the temperature is not sustained at this level. Tissue damage may occur for increased temperature over a long period of time, unlike the standard 43° C. for ultrasound imaging. A thermocouple or/and software for temperature and procedure monitoring prevent operator errors in causing harm to patient and/or transducer.

摘要翻译： 提供了改善超声图像质量的方法和系统。 按需传输不可持续的高功率超声波脉冲是在低功率，零功率或标准超声波脉冲下进行临时或空间交错的。 响应于用户发起的触发，生理触发，系统触发或外部设备触发，不可持续的高功率脉冲提供更好的信噪比和/或允许增加的成像频率，用于难以映像的患者中的任何一种 模式，例如B模式，响应于组织或造影剂的谐波B模式或颜色流动模式。 不可持续的高功率超声脉冲导致体内组织温度和换能器与皮肤之间的界面增加。 标准想象或标准高功率脉冲可以将温度升高约6℃，例如从正常37℃至平均43℃随时间增加。 不可持续的高功率超声波脉冲可能导致温度超过43°C在有限的时间段内。 例如，原位温度可以增加到50℃一秒钟，但温度不能维持在该水平。 组织损伤可能发生在长时间内升高的温度，与标准43°C超声成像不同。 用于温度和程序监控的热电偶或/和软件可防止操作员对患者和/或换能器造成伤害的错误。