Ultrasound
Velocity of Sound In Ultrasound.
What Is Velocity of Sound In Ultrasound? Velocity is the speed at which wave moves in medium. The velocity of sound in biological tissue is dependent on the physical properties of the tissue independent of the frequency. The velocity can be related to the frequency...
Speed Of Sound In Ultrasound.
What Is Speed Of Sound In Ultrasound? The speed of sound is the distance traveled by the wave per unit time and is equal to the wavelength divided by the period. The speed of sound is dependent on the propagation medium and varies widely in different materials....
Frequency of Sound In Ultrasound.
What Is Frequency of Sound In Ultrasound ? The frequency (j) is the number of times the wave oscillates through a cycle each second (sec). Sound waves with frequencies less than 15 cycles/sec (Hz) are called infrasound, and the range between 15 Hz and 20 kHz...
Wavelength Of Ultrasound.
What Is Wavelength Of Ultrasound? The wavelength (A) of the ultrasound is the distance (usually expressed in millimeters or micrometers) between compressions or rarefactions, or between any two points that repeat on the sinusoidal wave of pressure amplitude...
History Of Nuclear Magnetic Resonance ( NMR).
History Of Nuclear Magnetic Resonance ( NMR ). Nuclear magnetic resonance ( NMR ) is a powerful technique for the investigation of chemical and physical properties at the molecular level. The discovery of nuclear magnetic resonance (NMR), a property of nuclei in a...
History of Ultrasound.
History of Ultrasound. Historically, medical uses of ultrasound came about shortly after the close of World War II, derived from undetwater sonar research.Initial clinical applications monitored changes in the propagation of pulses through the brain to detect...