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Similar case retrieval device and similar case retrieval method

A technology similar to cases and cases, applied in medical image data management, medical data mining, sensors, etc., can solve the problem that the retrieval results are difficult to become readers, and achieve the effect of easy grasp and selection

Active Publication Date: 2015-10-14
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] That is, the problem that arises is that in the case of medical image retrieval, even if the retrieval is carried out with image feature quantities optimized in advance according to the type of recognized disease, the progression of the disease, or the severity of the disease, the retrieval results will not It is also difficult to become the basis for the diagnosis made by the reader or to assist the reader when hesitating to make a diagnosis

Method used

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  • Similar case retrieval device and similar case retrieval method
  • Similar case retrieval device and similar case retrieval method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] figure 1 is a block diagram of the similar case retrieval device in Embodiment 1 of the present invention.

[0090] The similar case retrieval means retrieves case data including medical images similar to the medical images of the scanning target from a case database in which a plurality of case data including medical images and scanning reports are accumulated, the scanning reports It is text data describing the result of the interpretation of the medical image. The similar case retrieval device includes: case database 100, first scan knowledge database 110, second scan knowledge database 120, scan object image reading unit 130, scan target image display unit 140, image feature extraction unit 150, reader The scan item consistency calculation unit 160 , the scan item candidate display unit 170 , the scan item selection unit 180 , the weight determination unit 190 , the similar case search unit 200 , and the similar case display unit 210 . And it includes an image int...

Embodiment 2

[0247] Next, Example 2 will be described. The difference from the first embodiment is that when the second scan knowledge database 120 is created in advance, the correlation (coordination relationship) between scan items can be calculated at the same time. In addition, when the image interpretation item selection is performed by the image reader, if an image interpretation item with a low matching frequency is selected, the image reader is notified that there may be an error in the selection. Hereinafter, the difference between Example 1 will be mainly explained.

[0248] The block diagram of the similar case retrieval device in the second embodiment of the present invention is the same as that in the first embodiment. However, the point where the scan item candidate display unit 170 is connected to the second scan knowledge database 120 is the same as figure 1 different.

[0249]

[0250] The production process of the film reading knowledge database of the similar case r...

Embodiment 3

[0259] Next, Example 3 will be described. The difference with Embodiment 1 is that when the second scan knowledge database 120 is created in advance, the correlation (coordination relationship) between the scan items is also calculated at the same time, and when the scan item is selected by the scan, Scanning items with low frequency of matching with each other are set in advance as unselectable. Hereinafter, the difference from Example 1 will be mainly explained.

[0260] The block diagram of the similar case retrieval device in embodiment 3 of the present invention is the same as embodiment 1 figure 1 .

[0261]

[0262] The creation process of the image interpretation knowledge database of the similar case retrieval device in Embodiment 3 of the present invention is the same as that in Embodiment 2, so repeated description will not be repeated. However, the point where the scan item candidate display unit 170 is connected to the second scan knowledge database 120 is th...

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Abstract

A similar case searching apparatus comprises: an image feature extracting unit; an image interpretation item fitting degree calculating unit which calculates the fitting degree of each image feature quantity to each of image interpretation items, based on first image interpretation knowledge indicating the range of values of image feature quantities of each type; an image interpretation item selecting unit; a weight determining unit which determines the weight to each image feature quantity based on second image interpretation knowledge defining correlations between image feature quantities, such that the weight is larger as the correlation with the image interpretation item is higher; a similar case searching unit which searches for the similar case data items, by adding the determined weight to each image feature quantity of the interpretation target image and a corresponding image feature quantity of the medical images in a case database, and comparing the weighted image feature quantities.

Description

technical field [0001] The present invention relates to a similar case retrieval device and a similar case retrieval method for searching similar cases used as references for medical image interpretation. Background technique [0002] In recent years, due to the development and popularization of medical imaging devices such as CT (Computed Tomography) and MRI (Magnetic Resonance Imaging: Magnetic Resonance Imaging), it is possible to obtain digitized high-definition medical images with a large capacity. And, the medical images read by the doctor are sequentially stored and accumulated in the PACS (Picture Archiving and Communication Systems) together with the report of the scan. Here, in order to serve as a reference for new scans, a search for past medical images similar to the medical images to be scanned has been developed from accumulated past cases. [0003] In similar image retrieval, it is important to optimize image feature quantities that determine the degree of si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00
CPCG06K9/6885G06F19/321G06F19/3443G06K9/623G16H50/70G16H30/40G16H30/20G06V30/1985G06F18/2113
Inventor 近藤坚司高田和丰小塚和纪
Owner PANASONIC CORP
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