As technologies improve over the years, so has the ultrasound device. But the basic concept remains the same. It has let to the development of other useful medical instrument such as the device CAVITRON (created in 1980) which destroys tumor.

During the World War 2 , there were many research of radar & sonar which led to the development of the ultrasound device.

Sound waves of very high frequencies can easily and harmlessly penetrate human flesh. As waves enter the body, they encounter different materials such as the bone and internal organs. These materials cause the waves to reflect back to the source. Because the waves reflect back differently, physician can identify the type of tissue by the nature of the reflection.