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    Replacement method for a damaged part of a light emitter of a probe
    2.
    发明授权
    Replacement method for a damaged part of a light emitter of a probe 有权

    公开(公告)号：US11141068B2

    公开(公告)日：2021-10-12

    申请号：US16290578

    申请日：2019-03-01

    Applicant: FUJIFILM Corporation

    Inventor： Kaku Irisawa

    IPC: A61B5/00 ,  G01H9/00 ,  G01N29/24 ,  G01N29/22

    Abstract: A photoacoustic probe which prevents foreign substances from entering and of which a portion of a light emitting unit to be easily damaged can be replaced is provided. An acoustic wave detector 24 detects acoustic waves. First and second light guide members 21 and 23, which form the light emitting unit, are arranged in series in a traveling direction of light. A frame body 11 holds the first light guide members 21, the second light guide members 23, and the acoustic wave detector 24. The first light guide members 21, is positioned close to a subject, is undetachably fixed to the frame body 11. Meanwhile, the second light guide members 23, which is positioned close to a light source, is detachably fixed to the frame body 11.

    Photoacoustic measurement probe and probe unit and photoacoustic measurement apparatus including the same
    3.
    发明授权
    Photoacoustic measurement probe and probe unit and photoacoustic measurement apparatus including the same 有权

    公开(公告)号：US11103136B2

    公开(公告)日：2021-08-31

    申请号：US15919515

    申请日：2018-03-13

    Applicant: FUJIFILM Corporation

    Inventor： Atsushi Hashimoto ,  Kaku Irisawa ,  Atsushi Osawa

    IPC: A61B5/00 ,  A61B8/00 ,  A61B8/13

    Abstract: In a photoacoustic measurement probe including an acoustic wave detector and an amplifier for amplifying a detection signal of a photoacoustic wave and a probe unit and a photoacoustic measurement apparatus having such a probe, heat is efficiently dissipated from the probe.
    In a probe having an acoustic wave detector and an amplifier, there are provided a first heat conductive member that is in contact with a part of a side plate of a housing and the amplifier to transfer heat generated by the amplifier to the side plate and a second heat conductive member that is in contact with a part different from the part of the side plate and the acoustic wave detector to transfer heat generated by the acoustic wave detector to the side plate.

    Photoacoustic image generation apparatus and method
    4.
    发明授权
    Photoacoustic image generation apparatus and method 有权

    公开(公告)号：US10709336B2

    公开(公告)日：2020-07-14

    申请号：US15457742

    申请日：2017-03-13

    Applicant: FUJIFILM Corporation

    Inventor： Kaku Irisawa ,  Kazuhiro Hirota

    IPC: A61B5/00

    Abstract: After light has been output to a subject to be examined, a photoacoustic wave induced in the subject by the output light is detected. It is assumed that at least one virtual detector element is present outside of a real detector, and dummy data corresponding to the at least one virtual detector element are added to photoacoustic data in which pieces of data of the photoacoustic wave detected by the detector are arranged in accordance with the positions of detector elements. A photoacoustic image is generated by reconstructing the photoacoustic data to which the dummy data have been added by using a Fourier transform method.

    Laser device and photoacoustic measurement device comprising the same
    5.
    发明授权
    Laser device and photoacoustic measurement device comprising the same 有权

    公开(公告)号：US10243318B2

    公开(公告)日：2019-03-26

    申请号：US15275697

    申请日：2016-09-26

    Applicant: FUJIFILM Corporation

    Inventor： Dai Murakoshi ,  Kaku Irisawa ,  Takuji Tada

    IPC: H01S3/127 ,  H01S3/092 ,  A61B5/00 ,  H01S3/082 ,  H01S3/08 ,  H01S3/16 ,  H01S3/106

    Abstract: In a laser device and a photoacoustic measurement device including the laser device, the intensity of light at each wavelength made independently controllable. The laser device includes a laser medium which has oscillation wavelengths at a first wavelength and a second wavelength with higher light emission efficiency than at the first wavelength, an excitation section, a first resonator, a second resonator, a Q-value change unit, and a control section. The control section oscillates light having the first wavelength through Q switching when a first delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the first wavelength, and oscillates light having the second wavelength through Q switching when a second delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the second wavelength.

    Photoacoustic image generation apparatus
    9.
    发明授权
    Photoacoustic image generation apparatus 有权

    公开(公告)号：US11504007B2

    公开(公告)日：2022-11-22

    申请号：US16357036

    申请日：2019-03-18

    Applicant: FUJIFILM Corporation

    Inventor： Katsuya Yamamoto ,  Kaku Irisawa ,  Dai Murakoshi

    IPC: A61B5/00 ,  A61B17/34 ,  A61B8/13 ,  A61B8/06 ,  A61B8/08 ,  A61B8/00 ,  A61B90/30

    Abstract: A photoacoustic image generation apparatus includes: a puncture needle that generates photoacoustic waves; an ultrasound probe that detects the photoacoustic waves and reflected ultrasonic waves reflected by the transmission of ultrasonic waves; a processor that generates a color Doppler signal of a region of interest as a color Doppler measurement target, generates a photoacoustic image on the basis of the photoacoustic waves, and detects the position of a tip portion of the puncture needle on the basis of the photoacoustic image; and a controller that sets the region of interest such that the position of the tip portion of the puncture needle and a center position of the region of interest are separated from each other by a predetermined distance and sets the region of interest, following the movement of the tip portion of the puncture needle, in a state in which the distance is maintained.

    Acoustic wave image display device and method
    10.
    发明授权
    Acoustic wave image display device and method 有权

    公开(公告)号：US11284861B2

    公开(公告)日：2022-03-29

    申请号：US16104791

    申请日：2018-08-17

    Applicant: FUJIFILM Corporation

    Inventor： Kaku Irisawa ,  Dai Murakoshi ,  Tomoki Inoue

    IPC: A61B8/00 ,  A61B5/00 ,  A61B8/06 ,  A61B8/14 ,  A61B8/08

    Abstract: A first acoustic wave image is displayed in a first display color, and a second acoustic wave image is displayed in a second display color different from the first display color. A group of first menu icons for designating a process to be performed on the first acoustic wave image and a group of second menu icons for designating a process to be performed on the second acoustic wave image are displayed on menu icon display means. The group of first menu icons is displayed in the first display color, and the group of second menu icons is displayed in the second display color.

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