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    • 2. 发明授权
    • Medical diagnostic ultrasound system and method for versatile processing
    • US06511426B1
    • 2003-01-28
    • US09328113
    • 1999-06-08
    • John A. HossackJeffrey S. HastingsJeffrey M. GreenbergSamuel H. Maslak
    • John A. HossackJeffrey S. HastingsJeffrey M. GreenbergSamuel H. Maslak
    • A61B800
    • G01S15/899A61B8/483A61B8/5276G01S7/52034G01S7/52077G01S15/8981G01S15/8993G01S15/8995
    • A method and system for reducing speckle for two and three-dimensional images is disclosed. For two-dimensional imaging, a one and a half or a two-dimensional transducer is used to obtain sequential, parallel or related frames of elevation spaced data. The frames are compounded to derive a two-dimensional image. For three-dimensional imaging, various pluralities of two-dimensional frames of data spaced in elevation are compounded into one plurality of spaced two-dimensional frames of data. The frames of data are then used to derive a three dimensional set of data, such as by interpolation. Alternatively, the various pluralities are used to derive a three-dimensional set of data. An anisotropic filter is applied to the set of data. The anisotropic filter filters at least along the elevation dimension. In either situation, various displays may be generated from the final three-dimensional set of data. A method and system for adjustably generating two and three-dimensional representations is also disclosed. For three-dimensional imaging, at least two sets of three-dimensional data corresponding respectively to two types of Doppler or B-mode data are generated. The sets of data are then combined. An image or a quantity may be obtained from the combined data. By combining after generating the three-dimensional sets of data, the same data (sets of data) may be combined multiple times pursuant to different relationships. Thus, a user may optimize the image or quantity. Likewise, frames of data may be combined pursuant to different persistence parameters, such as different finite impulse response filter size and coefficients. The frames of data may then be re-combined pursuant to different persistence parameters. Original ultrasound data may also be used to re-generate an imaging using the same ultrasound image processes as used for a previous image.
    • 3. 发明授权
    • Medical diagnostic ultrasound system and method for transform ultrasound
processing
    • 医学诊断超声系统及其变换超声处理方法
    • US6042545A
    • 2000-03-28
    • US200021
    • 1998-11-25
    • John A. HossackSamuel H. Maslak
    • John A. HossackSamuel H. Maslak
    • G01S15/89A61B8/00
    • G01S15/8977
    • The preferred embodiment includes a method and system for processing ultrasound data during or after compression. Various compression algorithms, such as JPEG compression, are used to transfer ultrasound data. The ultrasound data may include image (i.e. video data) or data obtained prior to scan conversion, such as detected acoustic line data or data complex in form. Compression algorithms typically include a plurality of steps to transform and quantize the ultrasound data. Various processes in addition to compression may be performed as part of one or more of the compression steps. Furthermore, various ultrasound system processes typically performed on uncompressed ultrasound data may be performed using compressed or partially compressed ultrasound data. Operation on compressed or partially compressed data may more efficiently provide processed data for generation of an image. Fewer operations are required by one or more processors when operating on compressed or partially compressed data than for uncompressed or non-compressed data. In one embodiment, partially compressed data may be input into a look-up table for contrast enhancement. In another embodiment, partially compressed data is high passed filtered.
    • 优选实施例包括用于在压缩期间或之后处理超声数据的方法和系统。 使用各种压缩算法(例如JPEG压缩)来传送超声数据。 超声数据可以包括图像(即视频数据)或扫描转换之前获得的数据,例如检测到的声线数据或形式的数据复合体。 压缩算法通常包括多个步骤来变换和量化超声数据。 作为一个或多个压缩步骤的一部分,可以执行除压缩之外的各种处理。 此外,可以使用压缩或部分压缩的超声数据来执行通常在未压缩超声数据上执行的各种超声系统处理。 在压缩或部分压缩的数据上的操作可以更有效地提供用于生成图像的处理数据。 当对压缩或部分压缩的数据进行操作时,一个或多个处理器需要更少的操作,而不是未压缩或非压缩数据。 在一个实施例中,可以将部分压缩的数据输入到用于对比度增强的查找表中。 在另一个实施例中,部分压缩的数据被高通过滤。
    • 4. 发明授权
    • Medical diagnostic ultrasound system and method for versatile processing
    • US06755787B2
    • 2004-06-29
    • US10299179
    • 2002-11-19
    • John A. HossackJeffrey S. HastingsJeffrey M. GreenbergSamuel H. Maslak
    • John A. HossackJeffrey S. HastingsJeffrey M. GreenbergSamuel H. Maslak
    • A61B800
    • G01S15/899A61B8/483A61B8/5276G01S7/52034G01S7/52077G01S15/8981G01S15/8993G01S15/8995
    • A method and system for reducing speckle for two and three-dimensional images is disclosed. For two-dimensional imaging, a one and a half or a two-dimensional transducer is used to obtain sequential, parallel or related frames of elevation spaced data. The frames are compounded to derive a two-dimensional image. For three-dimensional imaging, various pluralities of two-dimensional frames of data spaced in elevation are compounded into one plurality of spaced two-dimensional frames of data. The frames of data are then used to derive a three dimensional set of data, such as by interpolation. Alternatively, the various pluralities are used to derive a three-dimensional set of data. An anisotropic filter is applied to the set of data. The anisotropic filter filters at least along the elevation dimension. In either situation, various displays may be generated from the final three-dimensional set of data. A method and system for adjustably generating two and three-dimensional representations is also disclosed. For three-dimensional imaging, at least two sets of three-dimensional data corresponding respectively to two types of Doppler or B-mode data are generated. The sets of data are then combined. An image or a quantity may be obtained from the combined data. By combining after generating the three-dimensional sets of data, the same data (sets of data) may be combined multiple times pursuant to different relationships. Thus, a user may optimize the image or quantity. Likewise, frames of data may be combined pursuant to different persistence parameters, such as different finite impulse response filter size and coefficients. The frames of data may then be re-combined pursuant to different persistence parameters. Original ultrasound data may also be used to re-generate an imaging using the same ultrasound image processes as used for a previous image. APPENDIX A ⁢ Filter at Plane ⁢ Y = - 2   ⁢ X ⁢   ⁢ → ⁢ [ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ] ⁢ Z ↓ Filter at Plane ⁢ Y = - 1 ⁢ [ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ] Filter at Plane ⁢ Y = 0 ⁢ [ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ] Filter at Plane ⁢ Y = + 1 ⁢ [ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ] Filter at Plane ⁢ Y = + 2 ⁢ [ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ] The filter perform no filtering in the X, Z plane. It filters (low pass) contributions from neighboring elements in only the Y direction. The filter may be implemented as a 1-D low pass filter in the Y-direction [0.2, 0.4, 1.0, 0.4, 0.2]=(a 1×5×1 anisotropic filter).