Similar case history search device and similar case history search method

Abstract

A similar case history search device comprises: a weighting determination unit (170) which determines, on the basis of inter-item relation information which has predetermined an association between each image feature value which is extracted from a medical image and either each X-ray interpretation item or each condition name which is included in an X-ray interpretation report for the medical image, a weighting for each of a plurality of image feature values which are extracted from an X-ray interpretation subject image which increases the greater the association between the image feature value and either the X-ray interpretation item or the condition name which is included in the X-ray interpretation subject report; and a similar case history search unit (180) which, by weighting, with the weighting for each image feature value which is determined with the weighting determination unit (170), the plurality of image feature values which are extracted from the X-ray interpretation subject image and the plurality of image feature values which are extracted from a medical image which is included in case history data which is entered in a case history database, and comparing said feature values, searches for case history data which includes a medical image which is similar to the X-ray interpretation subject image.

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, selection of image feature values ​​for determining similarity between images is imp...

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned conventional configuration, since the image feature value (that is, the similarity reference) is determined by the type of the recognized disease, the progress of the disease, or the severity of the disease, etc., only the determined image is used. feature quantity to retrieve similar images, so there is no similar image retrieval that reflects the reader's focus on the medical image of the object to be read

That is, there is a problem that it cannot be used as a basis for the diagnosis by the reader or cannot assist the diagnosis when the reader is hesitant.

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