公开(公告)号：US10213100B2

公开(公告)日：2019-02-26

申请号：US14753274

申请日：2015-06-29

Applicant: NIDEK CO., LTD.

Inventor： Naoki Takeno ,  Yasuhiro Furuuchi ,  Hajime Namiki

IPC: A61B3/10 ,  A61B5/02 ,  A61B5/00 ,  G01N21/47 ,  A61B5/026 ,  A61B3/00 ,  A61B3/14 ,  A61B3/113

Abstract: An optical coherence tomography apparatus includes an OCT optical system configured to detect an OCT signal based on measurement light scanned on scan positions of a subject including a blood vessel network by a scanning unit and reference light. The optical coherence tomography apparatus is configured to execute: a signal processing instruction of processing OCT signals which are temporally different from each other with respect to a same position on the subject and generating a motion contrast image which images distribution of a moving object in a depth direction at each of the scan positions based on the OCT signals; and a detecting instruction of analyzing a profile in the depth direction of the motion contrast image generated by the signal processing unit and detecting a change resulting from the blood vessel to detect the blood vessel network included in the subject.

公开(公告)号：US11071452B2

公开(公告)日：2021-07-27

申请号：US14753927

申请日：2015-06-29

Applicant: NIDEK CO., LTD.

Inventor： Norimasa Satake ,  Yukihiro Higuchi ,  Yuji Murase ,  Yasuhiro Furuuchi ,  Hajime Namiki ,  Naoki Isogai ,  Masaaki Hanebuchi ,  Naoki Takeno

IPC: A61B3/10 ,  G06T7/00

Abstract: The present disclosure relates to an optical coherence tomography (OCT) including: an OCT device, an OCT calculation method, and an OCT calculation program, enabling correlation between images to be easily performed; more specifically it relates to a case where a functional OCT image such as a motion contrast is acquired by using the OCT; acquiring the functional OCT image through a calculation process of an OCT signal is a time-consuming process, for this reason, a long time elapses until the point that a functional OCT image can be observed after OCT imaging is completed, and thus this causes stress to a subject and an examiner; the present disclosure provides an OCT device, an OCT calculation method, and an OCT calculation program, enabling a functional OCT image to be rapidly acquired and enables an examiner to easily perform diagnosis.

公开(公告)号：US09933246B2

公开(公告)日：2018-04-03

申请号：US14566778

申请日：2014-12-11

Applicant: NIDEK CO., LTD.

Inventor： Naoki Takeno ,  Masaaki Hanebuchi ,  Yasuhiro Furuuchi ,  Hajime Namiki

IPC: G06K9/00 ,  A61B5/00 ,  G01B9/02 ,  A61B3/10 ,  A61B3/00

CPC classification number: G01B9/02091 ,  A61B3/0025 ,  A61B3/102 ,  A61B5/0066 ,  A61B5/7203 ,  G01B9/0201 ,  G01B9/02045 ,  G01B9/02087 ,  G06T2207/10101

Abstract: There is provided an optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.

公开(公告)号：US09687147B2

公开(公告)日：2017-06-27

申请号：US14955579

申请日：2015-12-01

Applicant: NIDEK CO., LTD.

Inventor： Yasuhiro Furuuchi ,  Masaaki Hanebuchi ,  Masakazu Endo ,  Hajime Namiki ,  Naoki Takeno

IPC: A61B3/14 ,  A61B3/00 ,  A61B3/10 ,  G01B9/02

CPC classification number: A61B3/102 ,  A61B3/0025 ,  A61B3/1005 ,  G01B9/02045 ,  G01B9/02091

Abstract: An optical coherence tomography device includes an OCT optical system; a processor. The processor executes: an image generation processing of processing first OCT signals, and generating, based on the first OCT signals, a three-dimensional motion contrast image which is obtained by imaging a moving object in the scanning position; a Doppler shift detection processing of detecting Doppler shift in a scanning position specified on the three-dimensional motion contrast image, the plurality of second OCT signals being detected at timings different from the timings when the plurality of first OCT signals are detected; and a velocity obtaining processing of obtaining an absolute velocity of the moving object based on the Doppler shift detected by the Doppler shift detection processing and a three-dimensional structure of the test subject obtained from the three-dimensional motion contrast image generated by the image generation processing.

公开(公告)号：US10674909B2

公开(公告)日：2020-06-09

申请号：US15696855

申请日：2017-09-06

Applicant: NIDEK CO., LTD.

Inventor： Tetsuya Kano ,  Norimasa Satake ,  Yukihiro Higuchi ,  Yasuhiro Furuuchi

IPC: G06K9/00 ,  A61B3/12 ,  G06T7/11 ,  A61B3/00 ,  A61B3/10 ,  G06T3/00 ,  G06T5/50 ,  G06T7/00 ,  G06T15/04

Abstract: An ophthalmic analysis apparatus for analyzing OCT motion contrast (MC) image data of a subject's eye acquired using an OCT apparatus for ophthalmology includes analysis process means for analyzing the OCT MC image data, in which the analysis process means generates OCT blood vessel change data including temporal change information in relation to a blood vessel region of the subject's eye based on first OCT MC image data and second OCT MC image data acquired at mutually different times.

公开(公告)号：US09921047B2

公开(公告)日：2018-03-20

申请号：US14499735

申请日：2014-09-29

Applicant: NIDEK CO., LTD.

Inventor： Masaaki Hanebuchi ,  Yasuhiro Furuuchi

IPC: H04B10/07 ,  G01B9/02 ,  A61B3/10 ,  A61B5/00

CPC classification number: G01B9/02075 ,  A61B3/102 ,  A61B5/0066 ,  G01B9/02004 ,  G01B9/02069 ,  G01B9/02091 ,  G01B2290/25 ,  G01B2290/45 ,  G01B2290/70

Abstract: An optical coherence tomography device includes an SS-OCT optical system which includes a wavelength swept optical source which sweeps an emission wavelength, an optical splitter which splits an interference signal light caused by interference between a measurement light and a reference light into a first interference signal light and a second interference signal light having a phase difference from the first interference signal light, a balance detector which includes a first detector configured to detect the first interference signal light and a second detector configured to detect the second interference signal light, and which processes detection signals from the first and second detectors to perform balance detection, and an optical member which is disposed between the optical splitter and one of the first detector and the second detector to generate a fixed pattern noise by one of the first interference signal light and the second interference signal light.

公开(公告)号：US09058652B2

公开(公告)日：2015-06-16

申请号：US13754565

申请日：2013-01-30

Applicant: NIDEK CO., LTD.

Inventor： Masaaki Hanebuchi ,  Norimasa Satake ,  Yasuhiro Furuuchi ,  Hajime Namiki

IPC: G06T5/00 ,  G01B9/02 ,  A61B3/10 ,  A61B5/00 ,  A61B3/12

CPC classification number: G06T5/002 ,  A61B3/102 ,  A61B3/1225 ,  A61B5/0066 ,  A61B5/7203 ,  G01B9/02004 ,  G01B9/0207 ,  G01B9/02091 ,  G06T5/10 ,  G06T2207/10101

Abstract: A method for reducing noise in a tomographic image, includes: acquiring phase information of a noise component signal, the signal being provided as a signal corresponding to a noise component of the tomographic image and included in a spectrum interference signal output from a detector of a swept source optical coherence tomography device; acquiring a tomographic image in response to a spectrum interference signal with a corrected phase deviation based on the acquired phase information; and reducing the noise component of this tomographic image.

Abstract translation: 一种用于降低断层图像中的噪声的方法，包括：获取噪声分量信号的相位信息，该信号被提供为与断层图像的噪声分量相对应的信号，并被包括在从检测器输出的频谱干扰信号中 扫描光学相干断层摄影装置; 基于所获取的相位信息，响应于具有校正的相位偏差的频谱干扰信号来获取断层图像; 并降低该断层图像的噪声分量。

公开(公告)号：US11452452B2

公开(公告)日：2022-09-27

申请号：US16068452

申请日：2017-01-05

Applicant: NIDEK CO., LTD.

Inventor： Naoki Takeno ,  Masaaki Hanebuchi ,  Yasuhiro Furuuchi ,  Hajime Namiki

IPC: A61B5/00 ,  A61B3/10 ,  A61B3/12 ,  G06T7/20 ,  G06F17/18

Abstract: An OCT signal processing device has an acquisition unit for acquiring three or more OCT signals being temporally different from each other with respect to the same position on a subject, from an OCT device that detects an OCT signal based on reflection light of measurement light applied to a subject and reference light corresponding to the measurement light, and a calculation unit for calculating motion contrast based on a plurality of OCT signals. The calculation unit selects two or more sets of OCT signals having different time interval between the OCT signals among sets obtained by extracting a plurality of OCT signals out of the three or more OCT signals, and calculates motion contrast for each of the selected two or more sets.

公开(公告)号：US10718601B2

公开(公告)日：2020-07-21

申请号：US15899575

申请日：2018-02-20

Applicant: NIDEK CO., LTD.

Inventor： Naoki Takeno ,  Masaaki Hanebuchi ,  Yasuhiro Furuuchi ,  Hajime Namiki

IPC: G01B9/02 ,  A61B5/00 ,  A61B3/10 ,  A61B3/00

Abstract: An optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.

公开(公告)号：US10130250B2

公开(公告)日：2018-11-20

申请号：US15340346

申请日：2016-11-01

Applicant: NIDEK CO., LTD.

Inventor： Ryosuke Shiba ,  Yasuhiro Furuuchi ,  Tetsuya Kano

IPC: G06K9/00 ,  A61B3/00 ,  A61B3/10 ,  A61B3/12 ,  G06T7/00 ,  G06K9/46 ,  G06K9/62

Abstract: An OCT data processing device for processing OCT data of a subject eye includes: a processor; and memory storing computer readable program, when executed by the processor, causing the OCT data processing device to execute: acquiring OCT data from an OCT optical system; and analyzing the acquired OCT data to acquire arteriovenous information on the blood vessel based on image information on a blood vessel scan area including a blood vessel of the subject eye.