Similar medical case search device, similar medical case search method, and similar medical case search program

Abstract

Provided are a similar medical case search device, a similar medical case search method, and a similar medical case search program, with which it is possible to perform a search which is focused on the respective feature amounts of multiple regions of interest. A similar medical case search server (17) is equipped with a feature amount calculation unit (62), an individual similarity calculation unit (65), and a similar medical case search unit (67). The feature amount calculation unit (62) obtains a feature amount for each of multiple regions of interest (ROI). Each region of interest (ROI) contains one or more different object lesions (OL) and is specified in inspection data (21) containing one or more inspection images (19), and is specified so as to contain an object lesion (OL), which is a lesion existing in an inspection image (19). The individual similarity calculation unit (65) calculates an individual degree of similarity for each region of interest (ROI) by comparing the feature amount for each region of interest (ROI) and the feature amount for a medical case lesion (CL), which is a lesion in a medical case image (22) and registered in a medical case. The similar medical case search unit (67) searches for similar medical cases on the basis of the multiple individual degrees of similarity that have been calculated.

Description

technical field [0001] The invention relates to a similar case retrieval device, a similar case retrieval method and a similar case retrieval program. Background technique [0002] In the medical field, a similar case retrieval device is known that retrieves past cases similar to the examination image from the examination image (for example, refer to Japanese Patent Application Laid-Open No. 2010-237930, Japanese Patent Laid-Open No. No)). The examination image is, for example, an image taken by a medical imaging device (modality) such as a CT (Computed Tomography) device that performs tomography or a general X-ray imaging device that takes a simple fluoroscopic image, and is used for patient diagnosis such as identification of a patient's disease . In one inspection with a general X-ray imaging device, only one inspection image may be taken, or a plurality of inspection images may be taken. In addition, a plurality of tomographic images (slice images) are acquired in one...

AI Technical Summary

Problems solved by technology

Specifically, even when an area including the same target lesion is designated as the ROI, the shape and size of the designated area may vary depending on the method of specifying the ROI due to individual differences among the designated users. changes, so sometimes the characteristic quantity changes

If the feature quantity changes, the similarity will also change, so there will be a search bias such as a change in the search result for each user.

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