ULTRASOUND PRELIMS

A type of wave that carries energy from place to place. A mechanical, longitudinal wave created by the vibration of a moving object.

• Audible Sound

• Sound

• Infrasound

• Ultrasound

All of the following describe ultrasound except:

• Has a frequency of 20,000 Hz

• Is a longitudinal wave

• Has a frequency of above 20 Khz

• Has a frequency of above 0.2 Mhz

In the year 1826, he showed that sound needs a medium to propagate?

• Lazaro Spallanzani

• Jean Daniel Collandon

• Hertz

• Howry

Also called shear waves

• Transverse waves

• Compression waves

• Longitudinal waves

• Rayleigh Scatter

He developed the 1st ultrasound scanner, consisting of a cattle and watering tank with a wooden rail anchored along the side.

• Lazaro Spallazani

• Brown

• Edler

• Howry

The distance between successive wave crest.

• Period

• Frequency

• Wavelength

• Amplitude

Describes the rate of change of phase of a sinusoidal waveform.

• Amplitude

• Frequency

• Period

• Wavelength

The relationship of frequency to period is

• Directly proportional

• Directly related

• Indirectly Related

• Inversely proportional

Waves that involve both longitudinal and transverse motions

• Shear waves

• Rayleigh waves

• Surface waves

• Both rayleigh and surface waves

Describes the propagation speed in bone

• 1000-2000 m/s

• 2000-4000 m/s

• 4000-5000 m/s

• 5000-6000m/s