IN BLOOD OXYGEN SATURATION DECLINE ESTIMATION METHOD USING BREATHING WAVEFORM ANALYSIS BY IMAGE PROCESSING

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring the number of times of in blood oxygen saturation decline by non-restrictively and non-invasively sensing a patient since the patient sometimes detaches the sensor, makes measurement impossible and destroys it when an exclusive sensor is attached to the patient to detect the number of times of the in blood oxygen saturation decline of patient with a sleep apnea syndrome. SOLUTION: The chest 1 or the like of the patient is photographed by a television camera 2 and the image is analyzed by an image analysis system 4. A Cheyne-Stokes respiration similar waveform obtained by that is detected, the number of the Cheyne-Stokes respiration similar waveforms within prescribed time is measured the number of times of the decline of in blood oxygen saturation is estimated from the correlation data of the number of the Cheyne-Stokes respiration similar waveforms and the number of times of the decline of the in blood oxygen saturation obtained beforehand.