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    • 13. 发明授权
    • Contrast agent imaging with agent specific ultrasound detection
    • 对比剂成像与特异性超声检测
    • US08177719B2
    • 2012-05-15
    • US11152521
    • 2005-06-14
    • Ismayil M. GuracarJames E. ChomasPatrick J. Phillips
    • Ismayil M. GuracarJames E. ChomasPatrick J. Phillips
    • A61B8/14
    • A61B8/481A61B8/483
    • Highly specific measurements of flow in vessels, such as the coronary artery, can be obtained by processing cubic fundamental information. By showing flow in vessels with a high degree of contrast-to-tissue specificity, ultrasound based 3D contrast agent based coronary artery angiograms may be possible. Measurement and display of the velocity of agent from the cubic fundamental signal is provided simultaneously with display of cubic fundamental energy, such as providing a display map indexed by both energy and velocity. High pulse repetition frequency (PRF) for cubic fundamental detection in conjunction with long velocity measurement intervals may increase low velocity sensitivity and measurement precision. Pulsed wave (PW) Doppler may be improved by using a cubic fundamental sensitive pulse sequence. Using cubic fundamental sensitive techniques with other motion estimation techniques, such as two-dimensional velocity estimation or speckle tracking, may operate better than using other contrast agent detection techniques because of substantially reduced clutter.
    • 可以通过处理立方基本信息来获得容器中诸如冠状动脉之间的流动的高度特异性测量。 通过显示具有高度对比组织特异性的血管中的流动,基于超声的基于3D造影剂的冠状动脉血管造影可能是可能的。 与三次基本能量的显示同时提供来自三次基本信号的试剂速度的测量和显示,例如提供由能量和速度两者分度的显示图。 结合长速度测量间隔的三次基波检测的高脉冲重复频率(PRF)可以提高低速度灵敏度和测量精度。 脉冲波(PW)多普勒可以通过使用立方基本敏感脉冲序列来改善。 使用三维基本敏感技术与其他运动估计技术(如二维速度估计或斑点跟踪)相比,使用其他造影剂检测技术的操作可能比实际上减少的杂波更好。
    • 15. 发明授权
    • Automated power level for contrast agent imaging
    • 造影剂成像自动功率水平
    • US08043219B2
    • 2011-10-25
    • US10944072
    • 2004-09-17
    • James E. Chomas
    • James E. Chomas
    • A61B8/14
    • A61B8/481A61B8/14
    • Automated determination and setting of an ultrasound system transmit power level is provided for contrast agent imaging. Low mechanical index imaging of contrast agents allows substantially continuous imaging of contrast agents without destruction. By comparing data associated with different transmit power levels and spatial locations, different delays between acquisition or different acquisition sequences, a contrast agent imaging transmit power generally minimizing destruction of contrast agents and maximizing signal-to-noise ratio is automatically determined. By using contrast agent specificity for setting the transmit power in addition or alternative to destruction of contrast agents, harmonic imaging may be improved.
    • 提供超声系统发射功率水平的自动确定和设置用于造影剂成像。 造影剂的低机械指数成像允许对比剂的基本连续成像而不破坏。 通过比较与不同发射功率电平和空间位置相关联的数据,可以自动确定采集或不同采集序列之间的不同延迟,通常最小化造影剂破坏和最大化信噪比的造影剂成像发射功率。 通过使用造影剂特异性来设置发射功率或替代造影剂的破坏,可以提高谐波成像。
    • 17. 发明申请
    • IMAGE PLANE STABILIZATION FOR MEDICAL IMAGING
    • 用于医学成像的图像平面稳定
    • US20090030316A1
    • 2009-01-29
    • US12240153
    • 2008-09-29
    • James E. ChomasKutay F. UstunerThilaka S. Sumanaweera
    • James E. ChomasKutay F. UstunerThilaka S. Sumanaweera
    • A61B8/00
    • A61B8/14A61B8/469A61B8/483A61B8/5276A61B8/5284A61B8/543G01S7/52077G01S7/52085G01S7/52088G01S15/8925G01S15/8979G01S15/8993
    • A medical imaging system automatically acquires two-dimensional images representing a user-defined region of interest despite motion. The plane of acquisition is updated or altered adaptively as a function of detected motion. The user-designated region of interest is then continually scanned due to the alteration in scan plane position. A multi-dimensional array is used to stabilize imaging of a region of interest in a three-dimensional volume. The user defines a region of interest for two-dimensional imaging. Motion is then detected. The position of a scan plane used to generate a subsequent two-dimensional image is then oriented as a function of the detected motion within the three-dimensional volume. By repeating the motion determination and adaptive alteration of the scan plane position, real time imaging of a same region of interest is provided while minimizing the region of interest fading into or out of the sequence of images.
    • 医疗成像系统自动获取表示用户定义的兴趣区域的二维图像,尽管运动。 作为检测到的运动的函数,采集平面被自适应地更新或改变。 然后由于扫描平面位置的变化,用户指定的感兴趣区域被连续地扫描。 多维阵列用于稳定三维体积中感兴趣区域的成像。 用户定义用于二维成像的感兴趣区域。 然后检测到运动。 然后将用于产生后续二维图像的扫描平面的位置定义为三维体积内检测到的运动的函数。 通过重复扫描平面位置的运动确定和自适应改变,提供了相同感兴趣区域的实时成像,同时将感兴趣的区域最小化到图像序列中或退出图像序列。