Ultrasound with frequency 11.3 MHz is passing through fat. The ultrasound travels at the speed of 1450 m/s in the fat. The ultrasound wave reaches the liver and some portion transmits through the liver. The acoustic impedance of the liver is Z= 1650000 kg/m^2s What is the wavelength of the ultrasound in the fat? What is the acoustic impedence of the fat?(p+920 kg/m^3 for the fat What is the proportion of the ultrasound energy reflected at the fat liver boundary? What is the speed of ultrasound int the liver? p= 1015 kg/m^3 for the liver What is the wavelength of the ultrasound in the liver
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
Ultrasound with frequency 11.3 MHz is passing through fat. The ultrasound travels at the speed of 1450 m/s in the fat. The ultrasound wave reaches the liver and some portion transmits through the liver. The acoustic impedance of the liver is Z= 1650000 kg/m^2s
What is the wavelength of the ultrasound in the fat?
What is the acoustic impedence of the fat?(p+920 kg/m^3 for the fat
What is the proportion of the ultrasound energy reflected at the fat liver boundary?
What is the speed of ultrasound int the liver? p= 1015 kg/m^3 for the liver
What is the wavelength of the ultrasound in the liver
The frequency of the wave never changes. It always remains the same irrespective of the medium in which it travels while the Wavelength and speed of wave change.
Ultrasonic waves are waves having a frequency greater than 20,000 Hz. Human ears cannot detect these frequencies but these waves are very useful for imaging tissues, bones of human beings.
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