公开(公告)号：US20110204893A1

公开(公告)日：2011-08-25

申请号：US13099250

申请日：2011-05-02

申请人： Chikayoshi SUMI

发明人： Chikayoshi SUMI

IPC分类号： G01R33/44 ,  G06F19/00 ,  G01L1/00

CPC分类号： G01S15/899 ,  A61B5/0051 ,  A61B5/0053 ,  A61B5/015 ,  A61B8/08 ,  A61B8/485 ,  A61B8/488 ,  A61N7/02 ,  G01S7/52042 ,  G01S15/8977 ,  G01S15/8979

摘要： The present invention provides elastic constant and visco elastic constant measurement apparatus etc. for measuring in the ROI in living tissues elastic constants such as shear modulus, Poisson's ratio, Lame constants, etc., visco elastic constants such as visco shear modulus, visco Poisson's ratio, visco Lame constants, etc. and density even if there exist another mechanical sources and uncontrollable mechanical sources in the object. The elastic constant and visco elastic constant measurement apparatus is equipped with means of data storing 2 (storage of deformation data measured in the ROI 7 etc.) and means of calculating elastic and visco elastic constants 1 (calculator of shear modulus etc. at arbitrary point in the ROI from measured strain tensor data etc.), the means of calculating elastic and visco elastic constants numerically determines elastic constants etc. from the first order partial differential equations relating elastic constants etc. and strain tensor etc.

摘要翻译： 本发明提供弹性常数和粘弹性常数测量装置等，用于在生物组织的ROI中测量弹性常数如剪切模量，泊松比，拉姆常数等，粘弹性常数如粘度剪切模量，粘度泊松比 ，粘度Lame常数等，即使在物体中存在另一种机械源和不可控制的机械源，密度也是如此。 弹性常数和粘弹性常数测量装置配备有数据存储装置2（存储在ROI 7等中测量的变形数据），以及计算弹性和粘弹性常数1（任意点处的剪切模量计算器） 在来自测量应变张量数据的ROI中），计算弹性和粘弹性常数的方法从弹性常数等与应变张量等的一阶偏微分方程数值地确定弹性常数等。

公开(公告)号：US20190129026A1

公开(公告)日：2019-05-02

申请号：US15951459

申请日：2018-04-12

申请人： Chikayoshi Sumi

发明人： Chikayoshi SUMI ,  Naoto YAMAZAKI

IPC分类号： G01S13/90 ,  A61B6/00 ,  A61B8/00 ,  G01S15/89 ,  G01S17/89

摘要： A measurement and imaging instrument capable of beamforming with high speed and high accuracy without approximate calculation. The instrument includes a reception unit which receives a wave arriving from a measurement object to generate a reception signal; and an instrument main body which performs a lateral modulation while superposing two waves in a two-dimensional case and three or four waves in a three-dimensional case in beamforming processing of the reception signal in which at least one wave arriving from the measurement object is processed as being transmitted or received in the axial direction or directions symmetric with respect to the axial direction to generate a multi-dimensional reception signal, performs Hilbert transform with respect to the multi-dimensional reception signal, and performs partial derivative processing or one-dimensional Fourier transform to generate analytic signals of the multi-dimensional reception signals of the two waves or the three or four waves.

公开(公告)号：US20120278005A1

公开(公告)日：2012-11-01

申请号：US13532779

申请日：2012-06-25

申请人： Chikayoshi SUMI

发明人： Chikayoshi SUMI

IPC分类号： G06F19/00

CPC分类号： A61B8/08 ,  A61B5/0051 ,  A61B5/0053 ,  A61B5/015 ,  A61B5/7239 ,  A61B8/485 ,  G01S7/52042 ,  G01S7/52095 ,  G01S15/582 ,  G01S15/8906 ,  G01S15/8984

摘要： The present invention provides elastic constant and visco elastic constant measurement apparatus etc. for measuring in the ROI in living tissues elastic constants such as shear modulus, Poisson's ratio, Lame constants, etc., visco elastic constants such as visco shear modulus, visco Poisson's ratio, visco Lame constants, etc. and density even if there exist another mechanical sources and uncontrollable mechanical sources in the object. The elastic constant and visco elastic constant measurement apparatus is equipped with means of data storing 2 (storage of deformation data measured in the ROI 7 etc.) and means of calculating elastic and visco elastic constants 1 (calculator of shear modulus etc. at arbitrary point in the ROI from measured strain tensor data etc.), the means of calculating elastic and visco elastic constants numerically determines elastic constants etc. from the first order partial differential equations relating elastic constants etc. and strain tensor etc.

摘要翻译： 本发明提供弹性常数和粘弹性常数测量装置等，用于在生物组织的ROI中测量弹性常数如剪切模量，泊松比，拉姆常数等，粘弹性常数如粘度剪切模量，粘度泊松比 ，粘度Lame常数等，即使在物体中存在另一种机械源和不可控制的机械源，密度也是如此。 弹性常数和粘弹性常数测量装置配备有数据存储装置2（存储在ROI 7等中测量的变形数据），以及计算弹性和粘弹性常数1（任意点处的剪切模量计算器） 在来自测量应变张量数据的ROI中），计算弹性和粘弹性常数的方法从弹性常数等与应变张量等的一阶偏微分方程数值地确定弹性常数等。

公开(公告)号：US20150112185A1

公开(公告)日：2015-04-23

申请号：US14591777

申请日：2015-01-07

申请人： Chikayoshi SUMI

发明人： Chikayoshi SUMI

IPC分类号： A61B8/08 ,  A61B8/14 ,  G06T7/00 ,  A61B5/055 ,  G01R33/48 ,  A61B8/00 ,  A61B5/00

CPC分类号： A61B8/5223 ,  A61B5/0048 ,  A61B5/0059 ,  A61B5/015 ,  A61B5/055 ,  A61B8/06 ,  A61B8/08 ,  A61B8/145 ,  A61B8/42 ,  A61B8/4416 ,  A61B8/4466 ,  A61B8/463 ,  A61B8/485 ,  A61B8/488 ,  A61B8/54 ,  G01R33/4814 ,  G01S7/52042 ,  G01S15/42 ,  G01S15/8977 ,  G01S15/8979 ,  G01S15/899 ,  G01S15/8997 ,  G06T7/0016

摘要： An accurate real-time measurement of a displacement vector is achieved on the basis of the proper beamforming that require a short time for obtaining one echo data frame without suffering affections by a tissue motion. The displacement measurement method includes the steps of: (a) yielding ultrasound echo data frames by scanning an object laterally or elevationally using an ultrasound beam steered electrically and/or mechanically with a single steering angle over an arbitrary three-dimensional orthogonal coordinate system involving existence of three axes of a depth direction, a lateral direction, and an elevational direction; and (b) calculating a displacement vector distribution by implementing a block matching on the predetermined ultrasound echo data frames yielded at more than two phases.

摘要翻译： 基于适当的波束形成，实现位移矢量的精确实时测量，这需要短时间来获得一个回波数据帧，而不会受到组织运动的影响。 位移测量方法包括以下步骤：（a）通过使用涉及存在的任意三维正交坐标系的电子和/或机械方向以单个转向角转向的横向或垂直扫描物体来产生超声波回波数据帧 深度方向，横向和高度方向的三个轴; 以及（b）通过在两相以上产生的预定超声回波数据帧上实施块匹配来计算位移矢量分布。

公开(公告)号：US20210389439A1

公开(公告)日：2021-12-16

申请号：US17394615

申请日：2021-08-05

申请人： Chikayoshi SUMI

发明人： Chikayoshi SUMI ,  Naoto YAMAZAKI

IPC分类号： G01S7/52 ,  A61B6/00 ,  G01S15/89 ,  A61B8/00 ,  G01S17/90

摘要： A measurement and imaging instrument capable of beamforming with high speed and high accuracy without approximate calculation. The instrument includes a reception unit which receives a wave arriving from a measurement object to generate a reception signal; and an instrument main body which performs a lateral modulation while superposing two waves in a two-dimensional case and three or four waves in a three-dimensional case in beamforming processing of the reception signal in which at least one wave arriving from the measurement object is processed as being transmitted or received in the axial direction or directions symmetric with respect to the axial direction to generate a multi-dimensional reception signal, performs Hilbert transform with respect to the multi-dimensional reception signal, and performs partial derivative processing or one-dimensional Fourier transform to generate analytic signals of the multi-dimensional reception signals of the two waves or the three or four waves.

公开(公告)号：US20170311930A1

公开(公告)日：2017-11-02

申请号：US15651545

申请日：2017-07-17

申请人： Chikayoshi SUMI

发明人： Chikayoshi SUMI

IPC分类号： A61B8/08 ,  A61B5/00 ,  A61B5/055 ,  A61B8/06 ,  A61B8/14 ,  A61B8/00 ,  G01S7/52 ,  G01R33/48 ,  G06T7/00 ,  A61B5/01 ,  G01S15/42 ,  G01S15/89

CPC分类号： A61B8/5223 ,  A61B5/0048 ,  A61B5/0059 ,  A61B5/015 ,  A61B5/055 ,  A61B8/06 ,  A61B8/08 ,  A61B8/145 ,  A61B8/42 ,  A61B8/4416 ,  A61B8/4466 ,  A61B8/463 ,  A61B8/485 ,  A61B8/488 ,  A61B8/54 ,  G01R33/4814 ,  G01S7/52042 ,  G01S15/42 ,  G01S15/8977 ,  G01S15/8979 ,  G01S15/899 ,  G01S15/8997 ,  G06T7/0016

摘要： A displacement measurement apparatus includes an ultrasound sensor transmitting ultrasounds to an object in accordance with a drive signal, and detecting ultrasound echo signals generated in the object to output echo signals; a driving and processing unit supplying the drive signal to the sensor, and processing the echo signals from the sensor to obtain ultrasound echo data; and a controller controlling the driving and processing unit to yield an ultrasound echo data frame at each of plural different temporal phases based on the ultrasound echo data obtained by scanning the object. The ultrasound echo data has one of local single octant spectra, local single quadrant spectra, and local single half-band-sided spectra in a frequency domain. The ultrasound echo data is obtained from plural same bandwidth spectra. A data processing unit calculates a displacement at each local position or distribution thereof in at least one of axial, lateral, and elevational directions by solving simultaneous equations derived at each local position via implementing a predetermined displacement measurement method on the ultrasound echo data yielded at the plural different temporal phases with respect to at least one of the axial, lateral, and elevational carrier frequencies and the phase, or the one of the local single octant spectra, the local single quadrant spectra, and the local single half-band-sided spectra.

公开(公告)号：US20160157828A1

公开(公告)日：2016-06-09

申请号：US14730583

申请日：2015-06-04

申请人： Chikayoshi SUMI

发明人： Chikayoshi SUMI ,  Naoto YAMAZAKI

IPC分类号： A61B8/08 ,  G01N29/46

CPC分类号： A61B8/5207 ,  A61B8/12 ,  A61B8/4494 ,  A61B8/54 ,  G01N29/0654 ,  G01N29/262 ,  G01N29/46 ,  G01N2291/02475 ,  G01S7/52047 ,  G01S15/8915 ,  G01S15/8927 ,  G01S15/8977 ,  G01S15/8997 ,  G10K11/32 ,  G10K11/341 ,  G10K11/346

摘要： Beamforming method that allows a high speed and high accuracy beamforming with no approximate interpolations. This beamforming method includes step (a) that generates reception signals by receiving waves arrival from a measurement object; and step (b) that performs a beamforming with respect to the reception signals generated by step (a); and step (b) including without performing wavenumber matching including approximate interpolation processings with respect to the reception signals, and the reception signals are Fourier's transformed in the axial direction and the calculated Fourier's transform is multiplied to a complex exponential function expressed using a wavenumber of the wave and a carrier frequency to perform wavenumber matching in the lateral direction and further, the product is Fourier's transformed in the lateral direction and the calculated result is multiplied to a complex exponential function, from which an effect of the lateral wavenumber matching is removed, to perform wavenumber matching in the axial direction, by which an image signal is generated.

摘要翻译： 波束成形方法允许高速和高精度的波束成形，无需近似内插。 该波束形成方法包括：步骤（a），其通过接收来自测量对象的波来产生接收信号; 以及步骤（b），其针对由步骤（a）生成的接收信号执行波束形成; 以及步骤（b），包括不执行包括关于接收信号的近似内插处理的波数匹配，并且接收信号是在轴向方向上被傅立叶变换的，并且所计算的傅里叶变换被乘以使用波数 波和载波频率在横向上进行波数匹配，此外，乘积是在横向方向上进行傅里叶变换，并将计算结果乘以复数指数函数，从其中除去横向波数匹配的影响，到 在轴向上执行波数匹配，由此产生图像信号。

公开(公告)号：US20240241238A1

公开(公告)日：2024-07-18

申请号：US18589890

申请日：2024-02-28

申请人： Chikayoshi Sumi

发明人： Chikayoshi SUMI ,  Naoto Yamazaki

IPC分类号： G01S7/52 ,  A61B6/00 ,  A61B8/00 ,  G01S15/89 ,  G01S17/90

CPC分类号： G01S7/52039 ,  A61B6/00 ,  A61B8/00 ,  G01S7/52019 ,  G01S7/52023 ,  G01S7/52025 ,  G01S7/52033 ,  G01S7/52038 ,  G01S7/52041 ,  G01S7/52046 ,  G01S7/52047 ,  G01S15/89 ,  G01S15/8915 ,  G01S15/8997 ,  G01S17/90 ,  A61B8/4488

摘要： A measurement and imaging instrument capable of beamforming with high speed and high accuracy without approximate calculation. The instrument includes a reception unit which receives a wave arriving from a measurement object to generate a reception signal; and an instrument main body which performs a lateral modulation while superposing two waves in a two-dimensional case and three or four waves in a three-dimensional case in beamforming processing of the reception signal in which at least one wave arriving from the measurement object is processed as being transmitted or received in the axial direction or directions symmetric with respect to the axial direction to generate a multi-dimensional reception signal, performs Hilbert transform with respect to the multi-dimensional reception signal, and performs partial derivative processing or one-dimensional Fourier transform to generate analytic signals of the multi-dimensional reception signals of the two waves or the three or four waves.

公开(公告)号：US20130046175A1

公开(公告)日：2013-02-21

申请号：US13424660

申请日：2012-03-20

申请人： Chikayoshi SUMI

发明人： Chikayoshi SUMI

IPC分类号： A61B8/08 ,  A61B8/14

CPC分类号： A61B8/08 ,  A61B8/483 ,  A61B8/485

摘要： A displacement measurement method for achieving, at each position of interest, high accuracy measurement of a displacement, a velocity and a strain in an actually generated beam direction by measuring the beam direction angle from ultrasound echo data. The method includes the steps of: generating an ultrasound echo data frame through scanning an object in a lateral direction with an ultrasound steered beam having one steering angle; calculating both a beam direction and a frequency in the beam direction based on an azimuth angle φ=tan−1(fy/fx), a polar angle θ=cos−1[fz/(fx2+fy2+fz2)1/2], and a frequency (fx2+fy2+fz2)1/2 in the case where first spectral moments calculated from local ultrasound echo data at plural different temporal phases are expressed by a three-dimensional frequency vector (fx, fy, fz); and calculating a displacement component in the beam direction at each position of interest generated between plural different temporal phases.

摘要翻译： 一种位移测量方法，用于通过从超声回波数据测量光束方向角度，在每个感兴趣的位置处实现实际产生的光束方向上的位移，速度和应变的高精度测量。 该方法包括以下步骤：通过用具有一个转向角的超声波转向束在横向上扫描物体来产生超声回波数据帧; 基于方位角＆phgr = tan-1（fy / fx），极角θ= cos-1 [fz /（fx2 + fy2 + fz2）），计算波束方向和波束方向的频率， （fx，fy，fz）表示从多个不同时间相位的局部超声波回波数据计算出的第一光谱矩的情况下的频率（fx2 + fy2 + fz2）1/2， ; 并且计算在多个不同时间相位之间生成的感兴趣位置处的波束方向上的位移分量。