TY - Journal of Shandong University(Engineering Science) A1 - JIN Peipei, SUN Fengrong, LIU Fanglei, YAO Guihua T1 - Cardiac cycle estimation of echocardiography with speckle tracking Y1 - 2017-04-20 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 94 EP - 99 VL - 47 IS - 2 UR - http://gxbwk.njournal.sdu.edu.cn N1 - 10.6040/j.issn.1672-3961.0.2016.325 ER -