Tomogram observation apparatus, processing method, and non-transitory computer-readable storage medium

A technology of tomographic image and equipment, applied in the field of tomographic image observation equipment

Inactive Publication Date: 2013-01-02
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In the above-mentioned circular scan, it is difficult to scan the same position as the position on the past image

Method used

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  • Tomogram observation apparatus, processing method, and non-transitory computer-readable storage medium
  • Tomogram observation apparatus, processing method, and non-transitory computer-readable storage medium
  • Tomogram observation apparatus, processing method, and non-transitory computer-readable storage medium

Examples

Experimental program
Comparison scheme
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no. 1 example

[0025] figure 1 is a diagram showing an example of the overall configuration of the diagnosis support system according to the embodiment of the present invention. Note that this example will exemplify diagnostic support for follow-up observation of glaucoma.

[0026] In this diagnosis support system, a diagnosis support device 10, a tomographic image acquisition device 20, and a data server 30 are connected to each other via a network 40 constituted by a LAN (Local Area Network) or the like. Note that the devices need not always be connected to each other via the network 40 as long as the devices can communicate with each other. For example, these devices may be connected to each other via USB (Universal Serial Bus), IEEE1394, or the like, or may be connected to each other via WAN (Wide Area Network).

[0027] In this case, the tomographic image acquisition device 20 is realized by time domain OCT or Fourier domain OCT, and has a function of obtaining a tomographic image sho...

no. 2 example

[0085]Next, a second embodiment will be described. The first embodiment has exemplified the case where images of the same subject's eye captured at different times are compared at the time of follow-up observation. For comparison, the second embodiment will exemplify a case where the left eye and the right eye of the same subject are compared with each other. This is because the left and right eyes of the same subject exhibit little deviation in the size of the optic nerve head. It is known that the size of the optic nerve head varies greatly among individuals. As a comparison, the left and right eyes of the same person show little deviation in the size of the optic nerve head (it is reported that the size difference between the left and right nipples of 99% of people falls within 1mm~2mm).

[0086] In this case, the second embodiment correlates tomographic images with each other paying attention to the shape of the nipple boundary. The second embodiment differs from the fi...

no. 3 example

[0093] Next, a third embodiment will be described. The third embodiment will exemplify a case where tomographic images to be compared are processed to clarify differences between these tomographic images and present the differences to an operator. More specifically, when displaying tomographic images to be compared, the apparatus performs difference processing to display the difference between the two tomographic images to the operator. The difference between this embodiment and the first embodiment and the second embodiment is that Figure 4 The display control processing shown in step S107. Since the device configuration and processing other than this display control processing are the same as those of the first embodiment and the second embodiment, descriptions for both will be omitted.

[0094] In this case, for example, the difference image may be generated by subtracting the luminance value of the corresponding pixel of the second tomographic image from the luminance v...

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Abstract

A tomogram observation apparatus characterized by comprising: detection means for detecting a region in which an optic nerve extends from a retina layer of an eye to be examined to outside the eye to be examined; and generation means for generating a two-dimensional tomogram of a portion around an optic papilla of the eye to be examined, based on a position of the region.

Description

technical field [0001] The invention relates to a tomographic image observation device, a processing method and a non-transient computer-readable storage medium. Background technique [0002] Recently, ophthalmology departments have adopted an apparatus called an optical coherence tomography (OCT) for acquiring retinal tomographic images. Obtaining retinal tomographic images makes it possible to quantitatively acquire changes in each layer accompanying the progression of the disease. Therefore, this technique is expected to enable grasping the degree of progression of a disease and evaluating medical treatment effects with higher precision. [0003] In glaucoma diagnosis, it is important to grasp the subtle changes in retinal layer thickness. Conventionally, these changes have been grasped using indexes related to the site around the optic nerve head called C / D ratio (cup / disc ratio) and R / D ratio (rim / disc ratio) (Japanese Patent Laid-Open No. 2008-154951 ). [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/10A61B3/12
CPCA61B3/1225A61B3/10A61B3/12G01B9/02
Inventor 米泽惠子
Owner CANON KK
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