-
公开(公告)号：US11333599B2
公开(公告)日：2022-05-17
申请号：US16417999
申请日：2019-05-21
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Hirota
Abstract: Provided are a photoacoustic image generation apparatus, a photoacoustic image generation method, and a photoacoustic image generation program that can perform a more appropriate reconstruction process regardless of the type of probe, without causing a reduction in the speed of an arithmetic process. It is identified whether a probe that detects photoacoustic waves and outputs a photoacoustic wave detection signal is a probe in which detection elements are arranged by a coordinate system using polar coordinates or a probe in which detection elements are arranged by a rectangular coordinate system. In a case in which the probe is identified as the probe in which the detection elements are arranged by the coordinate system using the polar coordinates, a time domain reconstruction process is selected to generate a photoacoustic image.
-
公开(公告)号：US11061001B2
公开(公告)日：2021-07-13
申请号：US16400848
申请日：2019-05-01
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Hirota , Keiji Tsubota
Abstract: There is provided a photoacoustic measurement apparatus capable of appropriately detecting a single failure state even in the single failure state so that it is possible to prevent an operation in the single failure state from continuing. There are included: a laser light source having a flash lamp and a laser medium; an excitation light source power supply having a capacitor for supplying a charge voltage to the flash lamp, a charging circuit for charging the capacitor, a first voltage dividing circuit and a second voltage dividing circuit for dividing a voltage charged in the capacitor, and a failure detection circuit that detects a failure by comparing voltages obtained by voltage division of the first voltage dividing circuit and the second voltage dividing circuit; and an ultrasound probe that detects photoacoustic waves generated inside a subject by emission of light emitted from the laser light source to the subject.
-
3.发明授权Laser source unit, control method thereof, photoacoustic image generation apparatus and photoacoustic image generation method 有权激光源单元，其控制方法，光声图像生成装置和光声图像生成方法公开(公告)号：US09392944B2
公开(公告)日：2016-07-19
申请号：US14167739
申请日：2014-01-29
Applicant: FUJIFILM Corporation
Inventor： Tadashi Kasamatsu , Kaku Irisawa , Kazuhiro Hirota
IPC: A61B5/00 , H01S3/106 , H01S3/11 , G01N29/24 , A61B5/145 , G01N21/17 , H01S3/08 , A61B5/1455 , H01S3/092 , H01S3/06
CPC classification number: A61B5/0095 , A61B5/0075 , A61B5/14542 , A61B5/14551 , A61B5/7257 , G01N21/1702 , G01N29/2418 , G01N2291/02466 , H01S3/061 , H01S3/08 , H01S3/092 , H01S3/1062 , H01S3/11
Abstract: A pulse laser beam is emitted in a desired wavelength sequence using a laser light source unit. A Q switch and a birefringent filter are inserted into an optical resonator including a pair of mirrors and facing each other with a laser rod interposed therebetween. The birefringent filter changes an oscillation wavelength of the optical resonator in association with rotational displacement. The rotation control unit rotates the birefringent filter at a predetermined rotation speed depending on the number of wavelengths included in the wavelength sequence of the pulse laser beam to be emitted. An emission control unit irradiates the laser rod with excitation light, and then turns on the Q switch at a timing when a rotational-displacement-position of the birefringent filter is set to a position corresponding to the wavelength of the pulse laser beam to be emitted, to cause the pulse laser beam to be emitted.
Abstract translation: 使用激光光源单元以期望的波长顺序发射脉冲激光束。 将Q开关和双折射滤光器插入到包括一对反射镜的光学谐振器中并且彼此相对并且其间插入激光棒。 双折射滤波器与旋转位移相关联地改变光谐振器的振荡波长。 旋转控制单元根据要发射的脉冲激光束的波长序列中包括的波长的数量以预定转速旋转双折射滤光器。 发射控制单元用激发光照射激光棒，然后在将双折射滤光器的旋转位移位置设置为与要发射的脉冲激光束的波长相对应的位置的时刻接通Q开关 以使脉冲激光束发射。
-
公开(公告)号：US12025627B2
公开(公告)日：2024-07-02
申请号：US17372550
申请日：2021-07-12
Applicant: FUJIFILM CORPORATION
Inventor： Kazuhiro Hirota , Yoshihiro Seto , Takeya Meguro , Kaku Irisawa , Hirotaka Watano , Taiji Iwasaki , Tatsuyuki Denawa , Haruyasu Nakatsugawa
IPC: G01N35/00 , G06V20/00 , G06V20/62 , G06V30/412
CPC classification number: G01N35/00732 , G01N35/0092 , G06V20/00 , G06V20/62 , G06V30/412 , G01N2035/00831
Abstract: A management system including at least one processor, wherein the processor is configured to acquire a captured image obtained by imaging an outer surface of each of plural sample containers which contains a sample and in which discrimination information for discriminating a subject from whom the sample is collected is given to the outer surface, and associate a test result related to the sample contained in each of the sample containers with a test order in which information of a discrimination image including the discrimination information is registered in advance for each subject, based on the captured image and the test order.
-
公开(公告)号：US11103137B2
公开(公告)日：2021-08-31
申请号：US15958210
申请日：2018-04-20
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Hirota , Kazuhiro Tsujita
Abstract: A photoacoustic imaging method is provided that can prevent the surface of the subject from appearing in an image when a part to be observed at a position deeper than the surface of the subject is imaged. The photoacoustic imaging device includes a unit for outputting pulsed light toward the subject, and generating photoacoustic data by detecting photoacoustic waves emitted from the subject exposed to the light. The photoacoustic imaging device also includes a region detection unit that detects a near-surface region of the subject based on the photoacoustic wave detection signals, and a correcting unit that attenuates (which encompasses removing) information of the near-surface region found by the region detection unit when the part to be observed is displayed.
-
Patent Agency Ranking
公开(公告)号：US09974439B2
公开(公告)日：2018-05-22
申请号：US14457921
申请日：2014-08-12
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Hirota , Kazuhiro Tsujita
CPC classification number: A61B5/0095 , A61B8/4416 , A61B8/463
Abstract: A photoacoustic imaging method is provided that can prevent the surface of the subject from appearing in an image when a part to be observed at a position deeper than the surface of the subject is imaged. The photoacoustic imaging device includes a unit for outputting pulsed light toward the subject, and generating photoacoustic data by detecting photoacoustic waves emitted from the subject exposed to the light. The photoacoustic imaging device also includes a region detection unit that detects a near-surface region of the subject based on the photoacoustic wave detection signals, and a correcting unit that attenuates (which encompasses removing) information of the near-surface region found by the region detection unit when the part to be observed is displayed.
-
公开(公告)号：US09380944B2
公开(公告)日：2016-07-05
申请号：US14167785
申请日：2014-01-29
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Hirota , Tadashi Kasamatsu
CPC classification number: A61B5/0095 , A61B5/0075 , A61B5/14542 , H01S3/092 , H01S3/1022 , H01S3/1062 , H01S3/11 , H01S3/1623 , H01S3/1648
Abstract: A pulse laser beam is emitted in a desired wavelength sequence using a laser source unit. A Q switch and a birefringent filter are inserted into an optical resonator including a pair of mirrors and facing each other with a laser rod interposed therebetween. The birefringent filter changes an oscillation wavelength of the optical resonator in association with rotational displacement. A trigger control circuit rotates the birefringent filter at a predetermined rotation speed depending on the number of wavelengths included in the wavelength sequence of the pulse laser beam to be emitted. In addition, the trigger control circuit irradiates the laser rod with excitation light, and turns on the Q switch at a timing when a rotational displacement position of the birefringent filter is set to a position corresponding to the wavelength of the pulse laser beam to be emitted, to cause the pulse laser beam to be emitted.
Abstract translation: 使用激光源单元以期望的波长序列发射脉冲激光束。 将Q开关和双折射滤光器插入到包括一对反射镜的光学谐振器中并且彼此相对并且其间插入激光棒。 双折射滤波器与旋转位移相关联地改变光谐振器的振荡波长。 触发控制电路根据包含在要发射的脉冲激光束的波长序列中的波长数目以预定转速旋转双折射滤光器。 此外，触发控制电路用激发光照射激光棒，并且在将双折射滤光器的旋转位移位置设定为与要发射的脉冲激光束的波长相对应的位置的时刻，接通Q开关 以使脉冲激光束发射。
-
公开(公告)号：US11213209B2
公开(公告)日：2022-01-04
申请号：US14283662
申请日：2014-05-21
Applicant: FUJIFILM Corporation
Inventor： Kaku Irisawa , Kazuhiro Hirota
Abstract: To obtain an absorption distribution from a detected signal with a practical device. Light is applied to a subject, and a photoacoustic signal generated in the subjectA photoacoustic is detected. From the detected photoacoustic signal, a light differential waveform, which is a differential waveform of a temporal waveform of the light applied to the subject, is deconvolved. As a result of this deconvolution, an absorption distribution is obtained.
-
公开(公告)号：US10276998B2
公开(公告)日：2019-04-30
申请号：US15266709
申请日：2016-09-15
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Hirota , Hiroyasu Ishii , Takuji Tada
Abstract: In a solid-state laser device and a photoacoustic measurement device including the solid-state laser device, the distance between a laser rod and a flash lamp is narrowed. A shielding lid shields mirrors and an optical path of laser light from the outside. A first portion of a frame body of a laser chamber is exposed from the shielding lid. A flash lamp stored in the frame body of the laser chamber is able to be removed from and inserted into the first portion of the frame body. A thin film portion having a thickness smaller than the thickness of other portions of the shielding lid is provided in at least a part of a region of the shielding lid covering the optical path of a light beam on the outside in a longitudinal direction from the first portion of the frame body of the laser chamber.
-
公开(公告)号：US09629557B2
公开(公告)日：2017-04-25
申请号：US14622084
申请日：2015-02-13
Applicant: FUJIFILM Corporation
Inventor： Kaku Irisawa , Kazuhiro Hirota
IPC: A61B5/00
CPC classification number: A61B5/0095 , A61B5/7225 , A61B5/7257 , A61B5/742 , A61B2576/00
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.
-
-
-
-
-
-
-
-
-
Search Results
24
records
(took 0.027 seconds)
