FREQUENCY DOMAIN ANALYSIS TRANSFORM OF RENAL BLOOD FLOW DOPPLER SIGNAL TO DETERMINE STRESS LEVEL

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for determining stress on the basis of renal blood flow.SOLUTION: This invention provides a method of determining stress on the basis of renal blood flow. The method includes a step of receiving data indicating renal blood flow of a subject. The method also includes a step of calculating a power spectrum of a signal derived from the data. The power spectrum indicates a stress level of the subject.