| CPC A61B 7/003 (2013.01) [A61B 7/04 (2013.01)] | 9 Claims |
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1. A lung sound analysis device comprising:
a memory containing program instructions; and
a processor coupled to the memory, wherein the processor is configured to execute the program instructions to:
store a history of auscultation observations on lung sound data of each of a plurality of auscultation positions of a subject who is a heart failure patient;
calculate an appearance frequency of abnormal sounds for each of the auscultation positions on a basis of the history;
determine a sequence of the auscultation positions at which lung sounds are to be auscultated from the subject, on a basis of the calculated appearance frequencies;
give guidance on the auscultation positions of the subject to an operator according to the determined sequence, and acquire time-series acoustic signals including lung sounds from a guided auscultation position; and
detect, using a machine leaning model, an abnormality in the lung sounds from the time-series acoustic signals including the lung sounds of each of the auscultation positions,
wherein the detecting includes:
determining a severity of heart failure of the subject based on a detection result of the abnormality in the lung sounds of each of the auscultation positions; and
determining the severity of the heart failure of the subject on assumption that abnormality in the lung sounds was not detected for an auscultation position at which auscultation was not performed, and outputting a result of the determination as a most optimistic value.
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