公开(公告)号：US11911108B2

公开(公告)日：2024-02-27

申请号：US16966480

申请日：2018-12-26

Applicant: TOPCON CORPORATION

Inventor： Jun Sakai ,  Shunsuke Nakamura ,  Kana Nishikawa ,  Masahiro Akiba

IPC: A61B3/00 ,  A61B3/10 ,  A61B3/12

CPC classification number: A61B3/1233 ,  A61B3/0033 ,  A61B3/102

Abstract: A blood flow measuring unit of a blood flow measurement apparatus of an embodiment includes an optical system for applying an OCT scan to an eye fundus and obtains blood flow information based on data acquired by the OCT scan. A movement mechanism moves the optical system. A controller applies a first movement control to the movement mechanism to move the optical system in a first direction orthogonal to an optical axis of the optical system by a predetermined distance from the optical axis. A judging unit judges occurrence of vignetting based on a detection result of return light of light incident on the eye through the optical system after the first movement control. The controller applies a second movement control to the movement mechanism to further move the optical system based on a judgement result obtained by the judging unit.

公开(公告)号：US12150711B2

公开(公告)日：2024-11-26

申请号：US17319089

申请日：2021-05-13

Applicant: National University Corporation ASAHIKAWA MEDICAL UNIVERSITY ,  Topcon Corporation

Inventor： Akitoshi Yoshida ,  Kana Minamide ,  Masahiro Akiba ,  Jun Sakai

IPC: A61B3/12 ,  A61B3/10

Abstract: The blood flow analysis apparatus includes an acquisition unit and an extractor. The acquisition unit is configured to acquire blood flow information representing time-course changes in a blood flow velocity of a single retinal artery or retinal vein. The extractor is configured to extract one or more parameters corresponding to change in the blood flow velocity from the blood flow information.

公开(公告)号：US10765316B2

公开(公告)日：2020-09-08

申请号：US15925922

申请日：2018-03-20

Applicant: TOPCON CORPORATION ,  TOHOKU UNIVERSITY ,  RIKEN

Inventor： Guangzhou An ,  Masahiro Akiba ,  Toru Nakazawa ,  Kazuko Omodaka ,  Hideo Yokota

IPC: A61B3/14 ,  A61B3/00 ,  A61B3/10 ,  A61B3/12 ,  G06T7/00

Abstract: An ophthalmic information processing system according to an embodiment includes a receiver and a processor. The receiver receives morphological data of an eye fundus of a subject. In addition, the receiver receives background data of the subject. The processor executes optic nerve head shape classification based on the morphological data and the background data received by the receiver.

公开(公告)号：US12137978B2

公开(公告)日：2024-11-12

申请号：US17417760

申请日：2019-12-25

Applicant: Topcon Corporation

Inventor： Kana Minamide ,  Masahiro Akiba

IPC: A61B3/12 ,  A61B3/10 ,  A61B5/00

Abstract: A blood flow measurement apparatus of an aspect example includes a scanning optical system, a front image acquiring unit, a region-of-interest determining processor, a scan controller, and a blood flow information acquiring unit. The scanning optical system applies OCT scanning to a fundus of a subject's eye. The front image acquiring unit acquires a front image of the fundus. The region-of-interest determining processor determines a region of interest that intersects a blood vessel by analyzing the front image based on a condition set in advance. The scan controller controls the scanning optical system to apply a repetitive OCT scan to the region of interest. The blood flow information acquiring unit acquires blood flow information based on data collected by the repetitive OCT scan.

公开(公告)号：US12118716B2

公开(公告)日：2024-10-15

申请号：US17306957

申请日：2021-05-04

Applicant: Topcon Corporation

Inventor： Guangzhou An ,  Masahiro Akiba ,  Tsutomu Kikawa

IPC: G06T7/00 ,  A61B3/12 ,  A61B3/14

CPC classification number: G06T7/0012 ,  A61B3/12 ,  A61B3/14 ,  G06T2207/20081 ,  G06T2207/30041

Abstract: An ophthalmologic information processing apparatus includes an acquisition unit and a determination unit. The acquisition unit is configured to acquire a captured image of a subject's eye. The determination unit is configured to determine whether or not the captured image acquired by the acquisition unit is an analysis error image including a predetermined analysis error factor.

公开(公告)号：US11058296B2

公开(公告)日：2021-07-13

申请号：US16061021

申请日：2016-10-25

Applicant: TOPCON CORPORATION

Inventor： Taiki Aimi ,  Masahiro Akiba ,  Atsushi Kubota

IPC: A61B3/10 ,  A61B3/00 ,  A61B3/14 ,  G06T19/20 ,  A61B3/12 ,  A61B3/135

Abstract: A storage device of an ophthalmologic image display device of an embodiment stores a three dimensional data set acquired by scanning a subject's eye using OCT. An image processor forms, based on the three dimensional data set, a B-mode image, front images, and composite front image obtained from the front images. A display controller displays the B-mode image, front images and composite front image in a predetermined layout. The display controller displays distinguishment color information for distinguishment between the front images by colors and slice area information that indicates a partial region of the B-mode image corresponding to a slice area of the three dimensional data set represented by each front image in a color according to the distinguishment color information, and displays a composite front image based on the front images, each of which is expressed by a color according to the distinguishment color information.