... frequency can be respectively adjusted: CFM PWDProvided with D-linear speed adjustmentImage processing functionImage realizes dynamic ... time, heart rate, speed, accelerationObstetrics measurementCalculation functionGestational sac(GS), biparietal diameter (BPD), cephalo-rump length(CRL), femur ... , oval, trace, volume, HR, gestational weekObstetric measurement soft: GS, CRL, BPD, AC, HC, FL, AFI, EDD, ...