| 摘要(英) |
Ballistocardiography(BCG) is the physiological signal causing by the heart. Body generate a regular movement by means of stroke volume(SV) which impacting the ascending and descending aorta from the reaction force.Compared with the Electrocardiography(ECG), BCG has the advantage of collecting signals by non-contact methods.And,the function of the left ventricle,which is the main pumping chamber,can be regarded as one of the important indicators for diagnosing heart failure(HF).
BCG can preliminary sort out the cardiovascular function information from facial images provided by patients in a non-contact manner,and provide to doctor with a basis for cardiac function diagnosis. In this study,cardiovascular models will be used to initially determine the etiology of HF patients and simulate the corresponding BCG signals. Then,the Valsalva maneuver was used in the study to show the actual BCG signals. Finally,using image dataset collected from the hospital patient previously,the relationship between left ventricular ejection fraction(LVEF) and BCG was analyzed. |
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