Studies were performed with the Hewlett Packard Sonos 00 and Toshiba 0A echocardiography machines with imaging and Doppler transducers (. .0 MHz).
Studies were performed with the Hewlett Packard Sonos 00 and Toshiba 0A echocardiography machines with imaging and Doppler transducers (. .0 MHz).
分别采用美国HP 0 0及日本Toshiba 0A型二维及多普勒超声心动图仪进行检查 ,探头频率 . .MHz。