The Philips HD9 is a mid-range women's health ultrasound system that offers high-end 3D and 4D imaging options as well as elastography. It has many imaging modes including B-Mode, M-Mode, Doppler, and Live 3D/4D. Features include a 17-inch monitor, multiple probe ports, high resolution, and various tissue imaging technologies. A variety of linear, convex, and endocavity probes are available.