ultrasound

Examples of ultrasound in the following topics:

• Applications: Ultrasound, Sonar, and Medical Imaging

  • Ultrasound is sound with a frequency higher than 20 kHz.
  • The most common use of ultrasound, creating images, has industrial and medical applications.
  • The use of ultrasound to create images is based on the reflection and transmission of a wave at a boundary.
  • When an ultrasound wave travels inside an object that is made up of different materials (such as the human body), each time it encounters a boundary (e.g., between bone and muscle, or muscle and fat), part of the wave is reflected and part of it is transmitted.
  • Ultrasound waves are sent out then reflected off the objects around the animal.

• Energy, Intensity, Frequency, and Amplitude

  • For example, the longer deep-heat ultrasound is applied, the more energy it transfers.

• Characteristics of Sound

  • Ultrasound uses sound waves with high frequencies to see things normally hard to detect, like tumors.
  • Animals, like bats and dolphins, use ultrasound (echolocation) to navigate and locate things.

• Frequency of Sound Waves

  • They can use this super hearing, or Ultrasound for locate objects and prey.

• Turbulence Explained

  • Another method of detecting this type of turbulence is ultrasound, used as a medical indicator in a process analogous to Doppler-shift radar (used to detect storms).

• Radio Waves

  • The ability of radio waves to penetrate salt water is related to their wavelength (much like ultrasound penetrating tissue)—the longer the wavelength, the farther they penetrate.