... obstetrics diagnosis. Functional characteristics:The KJ-4001 B ultrasonic diagnostic instrument (hereinafter refers to as instrument ... such five display modes as B, B/B, 4B,B+M, and M. Under the B mode there are six magnifications ... : portable and trolley, KJ-4001, 4002, 4003 and 4003(workstation)Display mode: Convex array: B, B/B,4B, B+M ... equipment, pregnancy and so on. Portable B ultrasound machine