... electronic convex(linear) 2.designed as a multiple function ultrasonic product Digital Ultrasound Scanner JAC-21353High Performance:The portable ... imaging system is designed as a multiple function ultrasonic product for your general and specialty clinical applications of abdominal,OB ... : Distance,perimeter/area,volume,slpe,HR,software packages for OBmeasurement.OB measurement:BPD,GS,CRL,FL.HC,AC ...