An ultrasound image is created by transmitting sound waves i

An ultrasound image is created by transmitting sound waves into the body and interpreting the intensity of the reflected echoes. This is achieved using a hand held ultrasound probe, which contacts the body via a water based gel. The data collected is then processed within the body of the scanner and displayed as a black and white image generally referred to as grey scale. The physics and the technology involved in ultrasound imaging has a profound effect on how structures appear. Discuss the physics behind why different structures including (1) bone, (2) tendon and (3) tumor have different levels of contrast intensity when imaged using ultrasound. Please be sure to comment on different types of reflection, the speed of sound, and tissue properties.

Solution

Ultrasound is a type of imaging. It uses high-frequency sound waves to look at organs and structures inside the body. Health care professionals use it to view the heart, blood vessels, kidneys, liver, and other organs. During pregnancy, doctors use ultrasound to view the fetus. Unlike x-rays, ultrasound does not expose you to radiation.

During an ultrasound test, you lie on a table. A special technician or doctor moves a device called a transducer over part of your body. The transducer sends out sound waves, which bounce off the tissues inside your body. The transducer also captures the waves that bounce back. The ultrasound machine creates images from the sound waves.