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11. 发明授权

US08328723B2 Ultrasound diagnosis apparatus 有权
标题翻译：超声诊断仪
公开(公告)号：US08328723B2
公开(公告)日：2012-12-11
申请号：US11996511
申请日：2006-06-20
申请人： Takashi Azuma , Shinichiro Umemura
发明人： Takashi Azuma , Shinichiro Umemura
IPC分类号： A61B8/13
CPC分类号： A61B8/14 , A61B8/0833 , A61B8/483 , A61B8/485 , A61B18/14 , A61N7/02 , A61N2007/0078 , G01S7/52036 , G01S7/52042 , G01S15/899
摘要： An ultrasound diagnosis apparatus includes an ultrasound probe 1, in which a plurality of transducer elements are arrayed and which converges and radiates an ultrasound on a patient and detects a reflection wave thereof, and images a tomogram of the patient, using the reflection wave, wherein an expansion detector 22 operates a difference between a radial component of a therapeutic converging beam of a movement amount of each part, and an integral amount integrated from the radial component, and extracts a tissue expansion generated at a part of the patient from the tomogram, and wherein the movement amount is calculated by performing a pattern matching between tomograms imaged with different frames.
摘要翻译：超声波诊断装置包括超声波探头1，其中排列有多个换能器元件并且对患者进行会聚并辐射超声波并检测其反射波，并使用反射波对患者的断层图像进行成像，其中扩张检测器22操作每个部位的移动量的治疗性收敛光束的径向分量与从径向分量积分的积分量之间的差异，并从断层图像中提取在患者的一部分产生的组织膨胀，并且其中通过执行用不同帧成像的断层图像之间的图案匹配来计算移动量。

12. 发明授权

US07817811B2 Sound-electricity conversion device, array-type ultrasonic transducer, and ultrasonic diagnostic apparatus 有权
标题翻译：声电转换装置，阵列式超声波换能器和超声波诊断装置
公开(公告)号：US07817811B2
公开(公告)日：2010-10-19
申请号：US11341655
申请日：2006-01-30
申请人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
发明人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
IPC分类号： H04R25/00
CPC分类号： B06B1/0292
摘要： The present invention aims to stabilize sound-electricity conversion characteristics of a diaphragm-type sound-electricity conversion device as well as to decrease the noise level of an ultrasonic diagnostic apparatus using the sound-electricity conversion device. The sound-electricity conversion device is configured by a capacitor cell including a lower electrode formed on a silicon substrate and an upper electrode over the lower electrode, the lower and upper electrodes sandwiching a cavity. An electrode short-circuit prevention film is formed on the upper electrode on the cavity side. The electrode short-circuit prevention film is formed of a material with an electrical time constant shorter than 1 second and longer than 10 microseconds, such as silicon nitride containing a stoichiometrically excessive amount of silicon. As a result, the electrode short-circuit prevention film has small electric conductivity, and thus it is made possible to prevent the film from being charged with electric charge and to avoid the drift of the electric charge. Consequently, the sound-electricity conversion characteristics of the sound-electricity conversion device stabilize, and further the sound noise level of the ultrasonic diagnostic apparatus decreases.
摘要翻译：本发明旨在稳定隔膜式声电转换装置的声电转换特性，并且降低使用声电转换装置的超声波诊断装置的噪声水平。声电转换装置由包括形成在硅基板上的下电极和下电极上的上电极的电容器单元构成，下电极和上电极夹着空腔。在空腔侧的上部电极上形成电极短路防止膜。电极短路防止膜由电气时间常数短于1秒且长于10微秒的材料形成，例如含有化学计量过量的硅的氮化硅。结果，电极短路防止膜具有小的导电性，因此可以防止膜被充电并避免电荷的漂移。因此，声电转换装置的声电转换特性稳定，超声波诊断装置的声音噪声水平进一步降低。

13. 发明申请

US20090301199A1 ULTRASONOGRAPHIC DEVICE 有权
标题翻译：超声波设备
公开(公告)号：US20090301199A1
公开(公告)日：2009-12-10
申请号：US11996532
申请日：2006-01-30
申请人： Takashi Azuma , Shinichiro Umemura , Tatsuya Nagata , Hiroshi Fukuda , Shuntaro Machida , Toshiyuki Mine
发明人： Takashi Azuma , Shinichiro Umemura , Tatsuya Nagata , Hiroshi Fukuda , Shuntaro Machida , Toshiyuki Mine
IPC分类号： G01N29/34 , H02N1/08
CPC分类号： A61B8/4483 , A61B8/08 , A61B8/4281 , B06B1/0292 , G01N29/2431 , G01S15/00
摘要： The receive sensitivity of an ultrasound array transducer structured with a diaphragm electro-acoustic transducer (101) being a basic unit is affected by change in a charge amount with elapsed time due to leakage or the like, which causes drift of the primary beam sensitivity, degradation in the acoustic SN ratio due to a rise in the acoustic noise level, and degradation in the directivity of an ultrasound beam. To addressing this problem, a charge controller (charge monitor 211) is provided to control charge in an electro-acoustic transducer (101). A charge monitoring section (102) monitors the change in the charge amount. When change in the charge amount is small, transmit sensitivity or receive sensitivity is calibrated by a controller (104) by, for example, multiplying a receive signal by a calibration coefficient corresponding to the change amount. Further, when the change in the charge amount is large, for example, charges can be re-emitted from a charge emitter (103). The series of operations is controlled by the controller (104), and thus sensitivity variation caused by difference in the changes with elapsed time, particularly between the plural transducers, is calibrated.
摘要翻译：由作为基本单元的隔膜电声换能器（101）构成的超声波阵列换能器的接收灵敏度受到由于泄漏等引起的经过时间的电荷量的变化的影响，导致主光束灵敏度的漂移，由于声学噪声水平的上升引起的声学SN比的降低，以及超声波束的方向性的劣化。为了解决这个问题，提供一种充电控制器（充电监视器211）来控制电声换能器（101）中的电荷。充电监视部（102）监视充电量的变化。当充电量的变化小时，通过例如将接收信号乘以对应于变化量的校准系数，由控制器（104）校准发射灵敏度或接收灵敏度。此外，当电荷量的变化大时，例如，电荷可以从电荷发射体（103）重新发射。一系列操作由控制器（104）控制，因此校正了由于经过时间的变化，特别是多个换能器之间的差异引起的灵敏度变化。

14. 发明申请

US20060284519A1 Sound-electricity conversion device, array-type ultrasonic transducer, and ultrasonic diagnostic apparatus 有权
标题翻译：声电转换装置，阵列式超声波换能器和超声波诊断装置
公开(公告)号：US20060284519A1
公开(公告)日：2006-12-21
申请号：US11341655
申请日：2006-01-30
申请人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
发明人： Shinichiro Umemura , Takashi Azuma , Tatsuya Nagata , Hiroshi Fukuda , Toshiyuki Mine , Syuntaro Machida
IPC分类号： H01L41/00
CPC分类号： B06B1/0292
摘要： The present invention aims to stabilize sound-electricity conversion characteristics of a diaphragm-type sound-electricity conversion device as well as to decrease the noise level of an ultrasonic diagnostic apparatus using the sound-electricity conversion device. The sound-electricity conversion device is configured by a capacitor cell including a lower electrode formed on a silicon substrate and an upper electrode over the lower electrode, the lower and upper electrodes sandwiching a cavity. An electrode short-circuit prevention film is formed on the upper electrode on the cavity side. The electrode short-circuit prevention film is formed of a material with an electrical time constant shorter than 1 second and longer than 10 microseconds, such as silicon nitride containing a stoichiometrically excessive amount of silicon. As a result, the electrode short-circuit prevention film has small electric conductivity, and thus it is made possible to prevent the film from being charged with electric charge and to avoid the drift of the electric charge. Consequently, the sound-electricity conversion characteristics of the sound-electricity conversion device stabilize, and further the sound noise level of the ultrasonic diagnostic apparatus decreases.
摘要翻译：本发明旨在稳定隔膜式声电转换装置的声电转换特性，并且降低使用声电转换装置的超声波诊断装置的噪声水平。声电转换装置由包括形成在硅基板上的下电极和下电极上的上电极的电容器单元构成，下电极和上电极夹着空腔。在空腔侧的上部电极上形成电极短路防止膜。电极短路防止膜由电气时间常数短于1秒且长于10微秒的材料形成，例如含有化学计量过量的硅的氮化硅。结果，电极短路防止膜具有小的导电性，因此可以防止膜被充电并避免电荷的漂移。因此，声电转换装置的声电转换特性稳定，超声波诊断装置的声音噪声水平进一步降低。

15. 发明授权

US08460191B2 Ultrasonic medical diagnostic device for imaging changes with time 有权
标题翻译：超声波医疗诊断装置随时间变化
公开(公告)号：US08460191B2
公开(公告)日：2013-06-11
申请号：US11914962
申请日：2006-05-18
申请人： Hideki Yoshikawa , Takashi Azuma , Kenichi Kawabata , Kazuaki Sasaki , Shinichiro Umemura
发明人： Hideki Yoshikawa , Takashi Azuma , Kenichi Kawabata , Kazuaki Sasaki , Shinichiro Umemura
IPC分类号： A61B8/00
CPC分类号： A61B8/5207 , A61B5/11 , A61B8/08 , A61B8/461 , A61B8/463 , G06T5/50 , G06T7/223 , G06T2207/10132 , G06T2207/30101
摘要： An diagnostic imaging apparatus for imaging information changing with time and displaying it in real time, composed of an ultrasonic probe (2), having piezoelectric elements arranged in an array form that transmit ultrasonic waves to a target object (1) and acquires a reflection signal from the target object; a body movement measuring unit (12) that constitutes a two-dimensional ultrasonic image using the reflection signal acquired by the ultrasonic probe, sets, in the image plane, a plurality of measuring areas used for measuring the body movement of the target object, and measures the body movement and deformation amounts in the measuring areas; and an image accumulating (subtracting) unit for accumulating or subtracting images using body movement measured by the body movement measurement unit.
摘要翻译：一种诊断成像装置，用于对随时间变化的图像信息随时间变化并实时显示，该超声波探头由超声波探头（2）组成，该超声波探头具有排列成阵列形式的压电元件，以将超声波传送到目标物体（1）并获取反射信号从目标对象; 使用由超声波探头取得的反射信号构成二维超声波图像的身体运动测量单元（12）在图像平面中设置用于测量目标物体的身体运动的多个测量区域，以及测量测量区域的身体运动和变形量; 以及用于通过由身体运动测量单元测量的身体运动来累积或减去图像的图像累积（减去）单元。

16. 发明授权

US08388536B2 Ultrasonic imaging apparatus 有权
标题翻译：超声波成像装置
公开(公告)号：US08388536B2
公开(公告)日：2013-03-05
申请号：US12545975
申请日：2009-08-24
申请人： Takashi Azuma , Shinichiro Umemura
发明人： Takashi Azuma , Shinichiro Umemura
IPC分类号： A61B8/00
CPC分类号： G01S15/8954 , G01S7/52022 , G01S7/52046 , G01S15/104 , G01S15/8959 , G01S15/8961
摘要： In an ultrasonic contrast imaging method in which signals specific to a contrast agent are extracted to form an image, imaging is performed with the following three well-balanced properties: frame rate, spatial resolution, and contrast-agent selectivity. A first chirp signal whose frequency increases with time and a second chirp signal obtained by inverting the first chirp signal about the time axis are used, and they are individually transmitted and received. A decoder having decode filters each adapted for a coded sequence, which is obtained when the chirp signal is decomposed into a pulse signal and a coded sequence, is provided. The decode filters are adapted for echo signals received in response to two chirp signals, respectively, and outputs of the two decode filters are input to a subtractor, whereby the difference therebetween is determined. Thus, contrast-agent selectivity is balanced with spatial resolution.
摘要翻译：在提取特定于造影剂的信号以形成图像的超声波对比度成像方法中，使用以下三个良好平衡的特性进行成像：帧速率，空间分辨率和造影剂选择性。使用其频率随时间增加的第一啁啾信号和通过使关于时间轴的第一啁啾信号反相而获得的第二啁啾信号，并且它们被单独发送和接收。一种具有解码滤波器的解码器，每个解码滤波器适用于当线性调频信号被分解为脉冲信号和编码序列时获得的编码序列。解码滤波器适用于响应于两个啁啾信号而接收的回波信号，并且两个解码滤波器的输出被输入到减法器，从而确定它们之间的差异。因此，造影剂选择性与空间分辨率平衡。

17. 发明申请

US20100280376A1 ULTRASONIC IMAGING APPARATUS 有权
标题翻译：超声波成像设备
公开(公告)号：US20100280376A1
公开(公告)日：2010-11-04
申请号：US12810327
申请日：2008-08-28
申请人： Shinichiro Umemura , Takashi Azuma
发明人： Shinichiro Umemura , Takashi Azuma
IPC分类号： A61B8/14
CPC分类号： A61B8/481
摘要： An echo signal reflected from a microbubble contrast agent is discriminated from an echo signal generated upon reflection of a nonlinearly propagated transmission pulse from the body tissues without degradation of the axial resolution, by performing transmission/reception twice or less which would hardly decrease the imaging speed. By detecting a difference in phase of the second harmonic component based on the fundamental component included in the echo signal, an echo signal generated upon nonlinear reflection from a microbubble contrast agent is discriminated from an echo signal generated upon linear reflection of a nonlinearly propagated transmission pulse from the body tissues. The phase of the second harmonic component is detected through phase sensitive detection in which the square of the fundamental component is used as a reference wave. Concurrently, a pulse inversion method is used to extract the second harmonic component included in the original echo signal, whereby degradation of the axial resolution is prevented.
摘要翻译：从微泡造影剂反射的回波信号与通过非线性传播的来自身体组织的传播脉冲反射而产生的回波信号进行区分，而不会降低轴向分辨率，通过执行两次或更少的几乎不降低成像速度的发送/接收。通过基于包含在回波信号中的基波分量来检测二次谐波分量的相位差，从微泡造影剂的非线性反射产生的回波信号与在非线性传播的传输脉冲的线性反射时产生的回波信号从身体组织。通过使用基波分量的平方作为基准波的相位检测来检测二次谐波分量的相位。同时，使用脉冲反转方法来提取包括在原始回波信号中的二次谐波分量，由此防止轴向分辨率的劣化。

18. 发明申请

US20090270730A1 ULTRASOUND DIAGNOSIS APPARATUS 有权
标题翻译：超声诊断装置
公开(公告)号：US20090270730A1
公开(公告)日：2009-10-29
申请号：US11996511
申请日：2006-06-20
申请人： Takashi Azuma , Shinichiro Umemura
发明人： Takashi Azuma , Shinichiro Umemura
IPC分类号： A61B8/13
CPC分类号： A61B8/14 , A61B8/0833 , A61B8/483 , A61B8/485 , A61B18/14 , A61N7/02 , A61N2007/0078 , G01S7/52036 , G01S7/52042 , G01S15/899
摘要： An ultrasound diagnosis apparatus includes an ultrasound probe 1, in which a plurality of transducer elements are arrayed and which converges and radiates an ultrasound on a patient and detects a reflection wave thereof, and images a tomogram of the patient, using the reflection wave, wherein an expansion detector 22 operates a difference between a radial component of a therapeutic converging beam of a movement amount of each part, and an integral amount integrated from the radial component, and extracts a tissue expansion generated at a part of the patient from the tomogram, and wherein the movement amount is calculated by performing a pattern matching between tomograms imaged with different frames.
摘要翻译：超声波诊断装置包括超声波探头1，其中排列有多个换能器元件并且对患者进行会聚并辐射超声波并检测其反射波，并使用反射波对患者的断层图像进行成像，其中扩张检测器22操作每个部位的移动量的治疗性收敛光束的径向分量与从径向分量积分的积分量之间的差异，并从断层图像中提取在患者的一部分产生的组织膨胀，并且其中通过执行用不同帧成像的断层图像之间的图案匹配来计算移动量。

19. 发明申请

US20090043197A1 ULTRASOUND IMAGING APPARATUS 有权
标题翻译：超声成像设备
公开(公告)号：US20090043197A1
公开(公告)日：2009-02-12
申请号：US12039367
申请日：2008-02-28
申请人： Shinichiro UMEMURA , Takashi Azuma
发明人： Shinichiro UMEMURA , Takashi Azuma
IPC分类号： A61B8/00
CPC分类号： G01S15/8952 , G01S7/52046
摘要： With a natural number n, an ultrasound pulse having a center frequency of nf0 is transmitted, and an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. Another ultrasound pulse having a center frequency of (n+1) f0 is transmitted, and, similarly, an echo wave produced by the reflection at an acoustic-impedance interface within the object to be examined is received. The received echo signal which has a center frequency of nf0 is raised to the power of (n+1) in a self-multiplication unit. Meanwhile, The received echo signal having a center frequency of (n+1) f0 is raised to the power of n in another self-multiplication unit. Each multiplication produces a signal having a center frequency of n (n+1) f0. A signed echo signal is obtained by a phase-sensitive detection between the two obtained signals.
摘要翻译：利用自然数n，发送具有nf0的中心频率的超声波脉冲，并且接收通过被检体内的声阻抗界面的反射而产生的回波。发送具有（n + 1）f0的中心频率的另一超声波脉冲，同样地，接收由被检查物体内的声阻抗界面的反射产生的回波。接收到的中心频率为nf0的回波信号在自乘单元中提高到（n + 1）的功率。同时，具有中心频率（n + 1）f0的接收回波信号在另一个自乘单元中提高到n的功率。每个乘法产生具有中心频率n（n + 1）f0的信号。通过两个获得的信号之间的相敏检测来获得有符号回波信号。

20. 发明授权

US07404797B2 Ultrasonic imaging system and ultrasonic signal processing method 失效
标题翻译：超声波成像系统和超声信号处理方法
公开(公告)号：US07404797B2
公开(公告)日：2008-07-29
申请号：US10621762
申请日：2003-07-18
申请人： Takashi Azuma , Shinichiro Umemura , Tatsuya Hayashi , Kenichi Kawabata , Akiko Osada
发明人： Takashi Azuma , Shinichiro Umemura , Tatsuya Hayashi , Kenichi Kawabata , Akiko Osada
IPC分类号： A61B8/00
CPC分类号： A61B8/461 , A61B8/08 , A61B8/464 , A61B8/467 , G01S7/52034 , G01S7/52036 , G01S7/5206 , G06T5/003 , G06T5/20 , G06T2207/10132 , G06T2207/30004
摘要： The present invention provides an ultrasonic imaging system capable of extracting structure-emphasized image data in which the structure of a tissue in a living body is emphasized and texture-emphasized image data in which a texture pattern coming from properties of a tissue in a living body is emphasized from B-mode image data, and obtaining a synthesized image obtained by weighting and combining the two extracted image data pieces. An ultrasonic imaging system has: a structure extractor for extracting structure-emphasized image data in which a structure of a tissue in the living body is emphasized from B-mode image data of the living body; a texture pattern extractor for extracting texture-emphasized image data in which a texture pattern coming from properties of a tissue in the living body is emphasized; an image synthesizer for obtaining a synthesized image by weighting and combining the structure-emphasized image data and the texture-emphasized image data; and a display for displaying at least one of the structure-emphasized image data, the texture-emphasized image data, and the synthesized image.
摘要翻译：本发明提供一种超声波成像系统，其能够提取结构强调图像数据，其中生物体中的组织的结构被强调，并且纹理强调图像数据，其中来自生物体中组织的性质的纹理图案从B模式图像数据中强调，并获得通过对两个提取的图像数据进行加权和组合而获得的合成图像。一种超声波成像系统具有：结构提取器，用于从生物体的B模式图像数据中提取结构强调图像数据，其中生物体中的组织的结构被强调; 用于提取纹理强调图像数据的纹理图案提取器，其中强调来自生物体中的组织的特性的纹理图案; 图像合成器，用于通过加权并组合结构强调图像数据和纹理强调图像数据来获得合成图像; 以及用于显示结构强调图像数据，纹理强调图像数据和合成图像中的至少一个的显示器。

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