Real-time Ultrasonic Volume Imaging by using Diverging Beam

Abstract

Real-time ultrasonic volume imaging by diverging sound beam in slice direction is described. This diverging beam is formed by attaching the acoustical lens to the front surface of the conventional ultrasonic probe for medical use Beam angle of 3.75MHz convex probe is about 45 degrees by using diverging lens is composed of silicone rubber and butadiene rubber. As a result of clinical evaluation, volume imaging is suitable for surface display such as water-skin interfaces. Shape and movement of fetal head, face and limbs in uterus were provided more information than two-dimentional (B-mode) images. Furthermore, the application for quasi 3D image of blood vessel by doppler signal was expected.