Image-based dementia diagnosis system and method

An image-based dementia diagnosis system comprising:

• a text input device manipulated by a test subject to input text;
• a data storage device storing image data comprising different images drawn to represent one noun-type word as an image, storing data for memory interference, and storing dementia information for each test subject;
• a display configured to display diagnostic data and test data on a screen so that the test subject confirms diagnostic data and test data with eyes;
• a selection manipulator manipulated by the test subject to select selection items for the image data and data, which are displayed on the screen through the display;
• and
• a controller connected to and controlling the text input device, the data storage device, the display, and the selection manipulator, wherein the controller comprises:
• an information input unit into which the test subject inputs personal information through the text input device;
• an image presentation unit configured to extract 5 to 15 images from among images of the image data, sequentially output the extracted images on the screen of the display, and present the output images to the test subject;
• a memory interference unit configured to output the data for memory interference on the screen of the display and interfere with a memory of the test subject;
• a test question generator configured to generate test questions by randomly mixing a plurality of images, which include the presented image as a correct answer and images other than the presented image as incorrect answers, after the output of the data for the memory interference is completed;
• a memory test performance unit configured to perform a memory test that enables the generated test questions to sequentially output on the screen of the display, a correct answer to be selected when an image output as the test question through the selection manipulator is the same as the presented image, and an incorrect answer to be selected when not the same as the presented image;
• and
• a dementia determiner configured to determine whether or not dementia is present and/or a dementia status, according to a degree of incorrect answer rate of the test questions, which is confirmed through the memory test after the memory test is completed.