OB Gyn Ultrasound Machine Obstetrics and gynaecology (OB/GYN) ultrasound machines are an essential diagnostic tool, and new models are increasing in accuracy and diagnostic capacity every year, providing more data and clearer images for prospective parents. The number of manufacturers offering this equipment has also increased, with hundreds of ultrasound machines on the market. Deciding which offer the best value and performance can be difficult. At Chison, we can help you determine which OB/GYN ultrasoundis best suited for a women's health exam. Women's health ultrasound machines typically use 2D (and sometimes 3D/4D imaging) to evaluate internal structures specific to women in order to diagnose and guide treatment. Typically, a 2D convex probe is used for abdominal scans and a 2D transvaginal probe is used to obtain better images of the reproductive system. Linear ultrasound can provide imaging for breast, musculoskeletal or vascular purposes.