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1. WO2014021782 - METHODS AND SYSTEMS FOR CHARACTERIZING ANGLE CLOSURE GLAUCOMA FOR RISK ASSESSMENT OR SCREENING

Publication Number WO/2014/021782
Publication Date 06.02.2014
International Application No. PCT/SG2013/000323
International Filing Date 01.08.2013
IPC
G06T 7/00 2006.1
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
A61B 3/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
A61B 8/10 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
8Diagnosis using ultrasonic, sonic or infrasonic waves
10Eye inspection
CPC
A61B 3/102
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
102for optical coherence tomography [OCT]
A61B 3/117
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
3Apparatus for testing the eyes; Instruments for examining the eyes
10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
117for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
G06T 2207/10072
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
10Image acquisition modality
10072Tomographic images
G06T 2207/10101
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
10Image acquisition modality
10072Tomographic images
10101Optical tomography; Optical coherence tomography [OCT]
G06T 2207/30041
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
2207Indexing scheme for image analysis or image enhancement
30Subject of image; Context of image processing
30004Biomedical image processing
30041Eye; Retina; Ophthalmic
G06T 7/0012
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
0002Inspection of images, e.g. flaw detection
0012Biomedical image inspection
Applicants
  • AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH [SG]/[SG]
  • SINGAPORE HEALTH SERVICES PTE LTD [SG]/[SG]
Inventors
  • XU, Yanwu
  • LIU, Jiang
  • WONG, Wing Kee, Damon
  • LEE, Beng Hai
  • AUNG, Tin
  • MANI, Baskaran
  • PERERA, Shamira
Agents
  • WATKIN, Timothy Lawrence Harvey
Priority Data
201205752-702.08.2012SG
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHODS AND SYSTEMS FOR CHARACTERIZING ANGLE CLOSURE GLAUCOMA FOR RISK ASSESSMENT OR SCREENING
(FR) PROCÉDÉS ET SYSTÈMES DE CARACTÉRISATION D'UN GLAUCOME À ANGLE FERMÉ POUR L'ÉVALUATION DU RISQUE OU LE DÉPISTAGE
Abstract
(EN) A method is proposed for analysing an optical coherence tomography (OCT) image of the anterior segment (AS) of a subject's eye. A region of interest is defined which is a region of the image containing the junction of the cornea and iris, and an estimated position the junction within the region of interest is derived. Using this a second region of the image is obtained, which is a part of the image containing the estimated position of the junction. Features of the second region are obtained, and those features are input to an adaptive model to generate data characterizing the junction.
(FR) L'invention concerne un procédé pour analyser une image de tomographie par cohérence optique (OCT) du segment antérieur (AS) de l'œil d'un sujet. Une région intéressante est définie qui est une région de l'image contenant la jonction de la cornée et de l'iris, et une position estimée de la jonction dans la région intéressante est déduite. À l'aide de cela, une seconde région de l'image est obtenue, qui est une partie de l'image contenant la position estimée de la jonction. Les caractéristiques de la seconde région sont obtenues, et ces caractéristiques sont entrées sur un modèle adaptatif pour générer des données caractérisant la jonction.
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