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    • 3. 发明授权
    • Contrast agent imaging with destruction pulses in diagnostic medical ultrasound
    • 在诊断医学超声中具有破坏脉冲的造影剂成像
    • US06340348B1
    • 2002-01-22
    • US09348246
    • 1999-07-02
    • Sriram KrishnanGregory L. HolleyEdward A. GardnerSamuel H. Maslak
    • Sriram KrishnanGregory L. HolleyEdward A. GardnerSamuel H. Maslak
    • A61B800
    • A61B8/481A61B8/543A61B17/22004A61B2017/22008
    • The invention is directed to improvements in diagnostic medical ultrasound contrast agent imaging. In a preferred embodiment, high pulse repetition frequency (HPRF) destruction pulses are fired at a rate higher than necessary for receiving returning echoes. Pulse parameters can also be changed between the plurality of contrast agent-destroying pulses. Other preferred embodiments of the invention are directed to simultaneous transmission of multiple beams of destruction pulses. Destruction frames that consist of a plurality of destruction pulses can be triggered and swept over the entire region of tissue being imaged and at a variety of focal depths from the transmitter. The destruction frames are fired at some time triggered from a timer or some fixed part of a physiological signal, such as an ECG signal. Other preferred embodiments of the invention are directed to continuous low power imaging pulses alternating with destruction pulses triggered at a fixed point of a physiological signal, and a comparison of the received signals from imaging pulses fired before and after the destruction pulses. Alternatively, destruction pulses are triggered at a fixed point on a physiological signal different from the fixed point of a physiological signal used to trigger imaging pulses. In another embodiment, triggered destruction frames are used to enable a comparison of imaging frames in order to determine physiological functions, such as perfusion of blood in cardiac tissue. Finally, in another embodiment, destruction pulses are combined with subharmonic imaging.
    • 本发明涉及诊断医学超声造影剂成像的改进。 在优选实施例中,高脉冲重复频率(HPRF)破坏脉冲以高于接收返回回波所需的速率被发射。 也可以在多个造影剂破坏脉冲之间改变脉冲参数。 本发明的其它优选实施例涉及同时传输多束破坏脉冲。 由多个破坏脉冲组成的破坏帧可以被触发并扫过被成像的组织的整个区域并且在来自发射器的各种焦深处扫过。 在由定时器或生理信号的某些固定部分(例如ECG信号)触发的某个时间触发破坏帧。 本发明的其它优选实施例涉及与生理信号的固定点触发的破坏脉冲交替的连续低功率成像脉冲,以及在破坏脉冲之前和之后激发的成像脉冲的接收信号的比较。 或者,在与用于触发成像脉冲的生理信号的固定点不同的生理信号上的固定点触发销毁脉冲。 在另一个实施例中,触发的破坏帧用于使成像帧的比较能够确定生理功能,例如心脏组织中血液的灌注。 最后,在另一个实施例中,销毁脉冲与次谐波成像组合。
    • 4. 发明授权
    • Medical diagnostic ultrasound system and method for continuous M-mode imaging and periodic imaging of contrast agents
    • 医学诊断超声系统和连续M模式成像和造影剂定期成像的方法
    • US06174287B1
    • 2001-01-16
    • US09330547
    • 1999-06-11
    • Jeffrey R. ResnickSriram KrishnanRichard M. BennettGregory L. HolleyJoan C. MainJohn A. Davidson
    • Jeffrey R. ResnickSriram KrishnanRichard M. BennettGregory L. HolleyJoan C. MainJohn A. Davidson
    • A61B800
    • A61B8/481A61B8/08A61B8/543
    • A method and system for imaging contrast agent within human or animal tissue, organs and/or blood is provided. Contrast agents, such as perfluorocarbon gas-filled albumin microbubbles which exhibit momentary contrast enhancement when exposed to high intensity ultrasound are injected into a patient. Periodic images are generated to avoid reduction in the contrast provided by the contrast agents due to ultrasound destruction. Between the periodic images, an M-mode image is substantially continuously updated to allow the user to better locate and maintain imaging of a region of interest, determine dynamic movement within the region of interest, access attenuation, determine an appropriate trigger point, and view perfusion of the contrast agent between the periodic images while minimizing destruction of contrast agent. In one embodiment, an ultrasound system alternates between triggered firings of a two-dimensional B-mode image and substantially continuous updating of an M-mode image. The M-mode image is displayed as a strip revealing the time course of reflected ultrasound echoes along a scan line within the B-mode image plane. The B-mode image is displayed adjacent to the M-mode image. In a second embodiment, two-dimensional B-mode and color Doppler images are triggered. The Doppler energy parameter is used for generating the adjacent and substantially continuous M-mode image.
    • 提供了用于在人或动物组织,器官和/或血液中成像造影剂的方法和系统。 将暴露于高强度超声波时显示瞬间对比度增强的全氟化碳气体填充的白蛋白微泡的对比剂注射到患者体内。 产生周期性图像以避免由于超声破坏造成的对比度降低。 在周期性图像之间,M模式图像基本上连续更新,以允许用户更好地定位和维持感兴趣区域的成像,确定感兴趣区域内的动态移动,访问衰减,确定适当的触发点和观看 在周期性图像之间灌注造影剂,同时最小化造影剂的破坏。 在一个实施例中,超声系统在二维B模式图像的触发发射和M模式图像的基本连续更新之间交替。 M模式图像显示为沿着B模式图像平面内的扫描线显示反射超声回波的时间过程的条带。 B模式图像显示在与M模式图像相邻的位置。 在第二实施例中,触发二维B模式和彩色多普勒图像。 多普勒能量参数用于产生相邻和基本上连续的M模式图像。