Patents by Inventor Yoshitaka Mine

Yoshitaka Mine has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20010034485
    Abstract: An ultrasonic diagnosis apparatus includes an ultrasonic probe. A transmitter supplies a transmission pulse to the ultrasonic probe to repeatedly transmit an ultrasonic wave to each of a plurality of scanning lines. A receiver receives echoes of the ultrasonic waves through the ultrasonic probe and obtaining a plurality of received signals for each of the plurality of scanning lines. A displacement estimating means estimates a relative change accompanying a tissue motion between received signals associated with each of scanning lines. A displacement correcting means corrects the received signals in accordance with the change detected by the displacement estimating means. A harmonic component extracting means extracts a harmonic component from the received signals corrected by the displacement correcting means. A display means generates an ultrasonic image on the basis of the harmonic component extracted by the harmonic component extracting means. A monitor displays the image generated by the display means.
    Type: Application
    Filed: April 9, 2001
    Publication date: October 25, 2001
    Inventors: Tetsuya Kawagishi, Ryoishi Kanda, Yoshitaka Mine
  • Publication number: 20010020131
    Abstract: An ultrasonic diagnosis apparatus has an ultrasonic probe having a plurality of arrayed transducer elements, a transmitting beam former for generating driving signals for driving transducer elements, and a receiving beam former for generating receiving signals based on echo signals received by transducer elements. The transmitting beam former generates driving signals so that phases of ultrasonic waves generated from transducer elements are aligned at multiple focal points. An image processor extracts harmonic components from receiving signals of ultrasonic waves having multiple focal points, and generates ultrasonic image data based on the harmonic components.
    Type: Application
    Filed: March 6, 2001
    Publication date: September 6, 2001
    Inventors: Tetsuya Kawagishi, Yoshitaka Mine
  • Publication number: 20010009977
    Abstract: An ultrasound diagnosis apparatus includes an ultrasound probe and a beam-former configured to scan an object to be examined with ultrasound waves through the ultrasound probe. A B-mode processor generates B-mode image data on the basis of a reception signal output from the beam-former. A power Doppler processor generates power Doppler data on the basis of the reception signal output from the beam-former. The power Doppler data is generated on the basis of the reception signal acquired under transmission conditions that the burst wave number is equal or substantially equal to that for the B-mode data, and the ensemble size is set to one of 2 to 10. The B-mode image data and power Doppler data are partly synthesized.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 26, 2001
    Inventors: Takeshi Sato, Masamichi Oyanagi, Yoshitaka Mine
  • Patent number: 6146330
    Abstract: An ultrasound wave is transmitted to a target object through an ultrasound probe, and an echo signal returning from the target object is received through the ultrasound probe. In a fundamental wave mode, a fundamental wave component is extracted from the echo signal, and an image is generated based on the fundamental wave component. In a harmonics mode, a harmonics component is extracted, and an image is generated based on the harmonics component. The focal strength ratio of the ultrasound wave in the harmonica mode is changed between in the harmonics mode and in the fundamental wave mode. As a result, images with high quality can be obtained in both the fundamental wave mode and the harmonics mode.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: November 14, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroyuki Tujino, Yoshitaka Mine, Takuya Sasaki
  • Patent number: 6053869
    Abstract: By scanning a cross-section of an inside of a subject through an organ of interest with an ultrasonic wave it is possible to generate tissue cross-sectional data relating to the cross-section and motion velocity data relating to the region of interest. The motion velocity data is comprised of transmit/receive direction components of the ultrasonic wave. In order to obtain a motion velocity, or its near-motion velocity, of a direction of interest, it is necessary to angle-compensate the motion velocity data in accordance with a given direction of interest. According to the present invention, the direction-of-interest necessary to effect the angle compensation is assumed based on the contour of the organ of interest which can be extracted from the tissue cross-sectional data.
    Type: Grant
    Filed: November 27, 1998
    Date of Patent: April 25, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuya Kawagishi, Yoshitaka Mine
  • Patent number: 5971927
    Abstract: An interested region including an interested blood vessel of a subject is scanned by a plurality of ultrasonic waves so as to receive a plurality of echo signals. A plurality of Doppler signals is detected from the echo signals in connection with a plurality of sample points in the interested region. An average frequency of the blood current of the interested blood vessel, variance, and power are calculated based on the Doppler signals. A sample point positioned on the interested blood vessel is picked up from the plurality of samples every time phase based on the average frequency or power. A time curve is formed based on at least one of the average frequency of the picked up sample point, the variance, and power. Thereby, it is possible to compensate for the state that a sample volume is detached from the interested blood vessel as in the conventional case.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: October 26, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Mine
  • Patent number: 5873829
    Abstract: In performing harmonic echo imaging, the necessity of changing modes is obviated, maneuverability is improved, and diagnostic information of the kinetics of a blood flow is provided with high reliability. A diagnostic ultrasound system provides, by scanning a cross section of an object with an ultrasonic beam signal, a normal B-mode image (the first tomographic image) of a tissue and a harmonic-mode image (the second tomographic image) of distribution information of an ultrasonic contrast medium injected into the object. The distribution information is obtained based on a non-fundamental frequency component (e.g., second harmonics) other than a fundamental frequency component of the ultrasonic beam signal. The system comprises a unit for scanning an ultrasonic beam signal along the cross section to acquire an echo. The scanning unit controls the scan so that the beam signal is scanned automatically and alternately for each raster in both the normal B-mode and the harmonic-mode.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: February 23, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Naohisa Kamiyama, Yoshitaka Mine
  • Patent number: 5810009
    Abstract: In an ultrasonic prove, a plurality of ultrasonic transducer elements are set in array. Each of the plurality of ultrasonic transducer elements has an outer surface consisting of a front surface for transmitting and receiving an ultrasonic signal, a back surface opposite to the front surface, and a side surface connecting between the front surface and the back surface. Each of the plurality of ultrasonic transducer elements is driven by a driving electric signal so as to transmit and receive the ultrasonic signal. The ultrasonic prove is comprised of a pair of electrodes covered with at least a portion of at least the front surface of each of the plurality of ultrasonic transducer elements and the side surface thereof and a pair of conductors joined to the pair of electrode of each of the transducer elements respectively. The joined positions of the pair of conductors are positioned on at least one of sides of the front surface of each of the transducer elements and side surface thereof.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: September 22, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Mine, Haruyasu Rokurouta
  • Patent number: 5724976
    Abstract: Provided is a diagnostic ultrasound system producing an image whose brightness is enhanced by a contrast medium by implementing contrast echography based on intravenous injection. A diagnostic ultrasound system comprises a probe for converting an electrical driving signal into a corresponding transmission ultrasound wave and converting an echoed ultrasound wave into a corresponding electrical echo signal. The system still comprises a unit for transmitting the transmission ultrasonic wave to a subject by providing the probe the electrical driving signal substantially consisting of a fundamental component of a given driving frequency. The non-fundamental component is typically a second harmonic. A non-fundamental component of the driving frequency is intentionally lowered in power relative to the fundamental component by a suppressing element in the transmitting unit.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: March 10, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Mine, Makoto Hirama, Hiroyuki Tsujino, Shiroh Saitoh
  • Patent number: 5669387
    Abstract: There is provided an ultrasonic diagnosis apparatus in which a region containing an organ of an object being examined is diagnosed by means of ultrasonic beams, the organ being in motion, the apparatus comprising: an element for scanning the region by the ultrasonic beams to obtain ultrasonic echo signals having Doppler shift; an element for calculating movement velocities every sampling volume on the basis of the ultrasonic echo signals; and an element for displaying in color the movement velocities.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: September 23, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Mine
  • Patent number: 5628322
    Abstract: Using a Doppler technique, contrast echo imaging is carried out in order to properly measure the velocity of a contrast medium injected into a patient body by intravenous injection. A diagnostic ultrasound system includes: a unit for extracting a Doppler shift of a nonlinear echo component from a received echo, the nonlinear echo component being attributable to reflection of an ultrasound beam from the ultrasound contrast medium injected into blood. A unit converts a Doppler shift f.sub.d into a velocity component v according to the following conversion expression:v =Vcos.theta.=Cf.sub.d /(2f.sub.set +f.sub.d)where C denotes a sound velocity, V denotes a moving velocity of a blood flow in a patient body, v denotes a component of a moving velocity V in a direction of an ultrasound beam, .theta. denotes an angle of an ultrasound beam with respect to a moving direction of an object, f.sub.set denotes a set frequency used for velocity conversion, and f.sub.d denotes a Doppler shift.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: May 13, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yoshitaka Mine
  • Patent number: 5296777
    Abstract: An ultrasonic probe has a plurality of ultrasonic transducer elements arranged in a row. A plurality of signal electrodes are provided at one side of the transducer elements. An earth electrode is provided at the other side of the transducer elements. Each of a plurality of signal conductive members is connected to a corresponding signal electrode. An earth conductive member is connected to the earth electrode. The signal conductive members are located close enough to the earth conductive member to sufficiently reduce a mutual inductance generated between said signal conductive members. Therefore, an amount of crosstalk generated between the signal conductive members is reduced.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: March 22, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshitaka Mine, Susumu Hiki, Makoto Hirama
  • Patent number: 5274296
    Abstract: An ultrasonic probe device has an ultrasonic transducer unit including a plurality of ultrasonic transducer elements electrically isolated from one another. A backing member for mechanically damping the ultrasonic transducer unit is arranged on the ultrasonic transducer unit. A plurality of signal lines is connected to the transducer elements, respectively, and extends on the backing member. The backing member is molded from a composition containing rubber material and a metal oxide which is unreducible by the heat applied during a molding process of the backing member.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: December 28, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Susumu Hiki, Yoshitaka Mine