Diagnostic support program

Abstract

Provided is a diagnostic support program that is possible to display a movement of an area whose shape 5 changes for each respiratory element including all or part of expired air or inspired air. There are provided processing of acquiring a plurality of frame images from a database that stores images, processing of specifying of a cycle of a 10 respiratory element including all or part of expired air or inspired air based on pixels in a specific area in each of the frame images, processing of detecting a lung field based on the cycle of the specified respiratory element, processing of dividing the 15 detected lung field into a plurality of block areas and calculating a change in image in a block area in each of the frame images, processing of Fourier-transforming a change in image in each block area in each of the frame images, processing of extracting a spectrum in a fixed 20 band including a spectrum corresponding to the cycle of the respiratory element, out of a spectrum obtained after the Fourier-transforming, processing of performing inverse Fourier transform on the spectrum extracted from the fixed band, and processing of 25 displaying each of the images after performing the inverse Fourier transform, on a display. 20 24 26 70 70 30 N ov 2 02 4 3 0 N o v 2 0 2 4 5 2 0 2 4 2 6 7 0 7 0

Claims

1. A diagnostic support program for analysing humanbody images and displaying the analysis results,comprising:an input interface that acquires a plurality offrame images;a control unit that:identifies at least one frequency of a respiratoryelement, which includes all or part of the exhalationor inhalation, based on the pixels of a specific regionof each frame image;detects lung fields from the acquired pluralityof frame images;divides the detected lung fields into a pluralityof block regions, and calculates the image changes inthe block regions for each frame image;performs a Fourier transform on the image changesof each block region in each frame image;2024267070   16 Jun 2026extracts spectra from the Fourier transformed spectra, which are within a certain bandwidth and correspond to at least one frequency of the respiratory element, or weights specific spectra by applying 5 coefficients;performs an inverse Fourier transform on the spectrums extracted from the certain bandwidth; andgenerates images between frames based on the frequency of the respiratory element and each frame 10 image.

2. The diagnostic support system according to claim1,wherein the spectrum extracted from the certain15 bandwidth of the Fourier transformed spectra using a filter includes spectra containing noise frequencies, frequencies other than the respiratory element frequencies obtained from the frame images, or2024267070   16 Jun 2026frequencies corresponding to the input frequency or frequency band.

3. The diagnostic support system according to claim5    1 or 2,wherein the change rate of the pixels in the blockregions of each frame image is calculated, and only the block regions where the synchronization rate, which is the ratio of the pixel change rate to the change rate10 of the dynamic part associated with respiration, falls within a predetermined range are extracted.

4. The diagnostic support system according to any oneof claims 1 to 3,15       wherein the respiratory element is corrected bychanging the phase of at least one frequency of the respiratory element or smoothing the waveform of the respiratory element.2024267070   16 Jun 20265.   The diagnostic support system according to any oneof claims 1 to 4,wherein only blocks with relatively high amplitude5 values are extracted and displayed after the inverse Fourier transform.

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