Development of automatic measurement method of ejection fraction of left ventricle without initial procedure to evaluate diseased heart

摘要

Examination with echography greatly depends on the expertise and experience of an operator. Thus many kinds of researches to recognize left ventricular (LV) cavity were developed. However, most of these techniques require initial settings to indicate initial region or points of interest. Therefore, we have developed an automatically recognition software of LV without initial settings. The software includes the automatic detection of inner area of LV cavity and the automatic recognition to extract the contour of LV cavity. We have applied this algorithm to more than 100 diseased hearts. As the result, the proposed method correctly recognized left ventricular cavities. Furthermore, the calculation results of ejection fraction were agreed with that of conventional method by professional sonographers.