... Needs, with Optimum SolutionsS20, the newest color Doppler system from Yingren, is specially designed for full ultrasound applications, including Radiology, Cardiovascular, OB/GYN ... : Convex, Phased, Linear, Transvaginal, Transrectal, Bi-plane, TEE, Endoscopic, Intraoperative, 4D• High density transducers with frequency range from 1.9 to ...