Patents by Inventor Yoshihisa SOTOME

Yoshihisa SOTOME 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: 20190310331
    Abstract: The array-coil includes a plurality of coil units that are each adjusted to receive a magnetic resonance signal from an examinee. Each coil unit includes: a first-coil-element and a second-coil-element of which each is formed of a linear conductor having flexibility with a predetermined length; and a signal detecting unit that is inserted in series between the first-coil-element and the second-coil-element and detects the magnetic resonance signal. One end of each of the first-coil-element and the second-coil-element is connected to the signal detecting unit and the other end thereof is an open end. Adjacent areas are electromagnetically coupled to each other to function by curving and arranging the first-coil-element and the second-coil-element such that at least partial areas on the open end side of the first-coil-element and the open end side of the second-coil-element are adjacent to each other with a predetermined gap therebetween.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 10, 2019
    Applicant: Hitachi, Ltd.
    Inventors: Yosuke OTAKE, Yoshihisa SOTOME, Hisaaki OCHI
  • Publication number: 20190261906
    Abstract: Provided is a technique for calculating an oxygen extraction fraction by using MRI where the oxygen extraction fraction in a brain including brain parenchyma is calculated via a simple processing without an impact on an examinee, such as administration of caffeine. For this purpose, an MRI apparatus of the present invention measures a complex image of nuclear magnetic resonance signals, and calculates from thus measured complex image, a physical property distribution for obtaining a physical property image reflecting the oxygen extraction fraction. Then, thus calculated physical property distribution is separated into tissue-specific physical property distributions for at least two tissues (separated tissue images). After converting any of the separated tissue images into the oxygen extraction fraction, a distribution of the oxygen extraction fraction is estimated based on the condition that a value of any selected pixel is substantially equal to a mean value of pixels surrounding the selected pixel.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 29, 2019
    Applicant: Hitachi, Ltd.
    Inventors: Toru SHIRAI, Ryota SATOH, Yo TANIGUCHI, Hisaaki OCHI, Yoshihisa SOTOME, Yoshitaka BITO, Takenori MURASE
  • Publication number: 20190250231
    Abstract: A plurality of subject parameter maps are acquired at high speed. In addition to using an imaging sequence for generating both a gradient echo and a spin echo in a single imaging sequence, one or more parameters such as the longitudinal relaxation time T1 and the apparent transverse relaxation time T2* are calculated using the gradient echo and another parameter such as true transverse relaxation time T2 is calculated using the spin echo. When a value of one parameter is calculated, a value of the parameter calculated at the time of calculating the other parameter can be used.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 15, 2019
    Applicant: Hitachi, Ltd.
    Inventors: Yo TANIGUCHI, Hisaaki OCHI, Toru SHIRAI, Yoshihisa SOTOME, Suguru YOKOSAWA, Tomoki AMEMIYA
  • Publication number: 20190076049
    Abstract: Accuracy degradation due to a signal loss is reduced, and susceptibility is calculated with high accuracy where, by using an MRI, at least one echo is acquired where spatial magnetic field inhomogeneity is reflected, and a complex image is calculated from the acquired echo. Three masks are calculated from the calculated complex image; a low-signal region mask representing a low signal region, a first high-signal region mask representing a high signal and high fat content region, and a second high-signal region mask representing a high signal and low fat content region. In calculating a susceptibility image from a frequency image or a magnetic field image generated from the complex image, the susceptibility image is obtained under the constraint that a region defined by the low-signal region is set as a background and the susceptibility of the region defined by the second high-signal region mask is set to a specific value.
    Type: Application
    Filed: May 24, 2017
    Publication date: March 14, 2019
    Inventors: Ryota SATOH, Toru SHIRAI, Yo TANIGUCHI, Yoshitaka BITO, Hisaaki OCHI, Yoshihisa SOTOME
  • Publication number: 20180338701
    Abstract: A system is disclosed to simultaneously acquire a magnetic resonance angiography (MRA) image and a plurality of images in which the structure of a tissue other than a blood vessel can be ascertained without performing imaging for the MRA image, and to shorten a time of MR examination. Two or more kinds of physical property dependent images obtained from a nuclear magnetic resonance signal measured in accordance with a predetermined pulse sequence under a plurality of imaging conditions are combined using a predetermined combination function.
    Type: Application
    Filed: March 5, 2018
    Publication date: November 29, 2018
    Inventors: Tomoki AMEMIYA, Suguru YOKOSAWA, Yo TANIGUCHI, Hisaaki OCHI, Yoshihisa SOTOME