What is the definition or description of: sonogram?

AKA Ultrasound: The sonogram is a test that looks at body organs with no radiation. It uses sound waves and can give us a 2 dimensional view of organs such as the kidney, liver, heart, and lungs. It can define spaces that are either solid or full of fluid. I can also guide large needles into an organ or near the spine, and can help define the area being cut open. Its a cheap, but useful test.

A Sonogram,: also referred to as an ultrasound, is a medical image formed by focusing sound waves produced by a transducer(probe) into the body, and detecting the reflected sound waves by the same transducer. The digital information produces an image. This technology has its origins in the development of naval sonar. It uses no ionizing radiation.