1/14
This set of flashcards covers key vocabulary and concepts related to ultrasound physics and acoustic waves, aiding in exam preparation.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
Ultrasound
Sound waves with frequencies above 20,000 Hertz, used in medical imaging and other applications.
Doppler Effect
Change in frequency of a wave in relation to an observer who is moving relative to the wave source.
Pulse-Echo Technique
A method in ultrasound imaging where sound pulses are sent into the body and their echoes are detected to create an image.
Microsecond
One millionth of a second, commonly used in measuring time intervals in ultrasound.
Wavelength
The length of space occupied by one wave, important in determining sound quality in ultrasound.
Frequency
Number of cycles of a wave that occur in one second, measured in Hertz.
Acoustic Variables
Variations in physical quantities such as pressure, density, and distance that describe sound waves.
Infrasound
Sound waves with frequencies below 20 Hertz, inaudible to humans.
Propagation Speed
The speed at which sound travels through various media, affected by the medium's stiffness and density.
Decibels
A logarithmic unit used to measure the intensity of sound, expressing the ratio of a given sound intensity to a reference intensity.
Impedance
Resistance to the flow of sound waves in a medium, affecting the strength of reflections in ultrasound imaging.
Scan Formats
Ways to display ultrasound images, including linear, sector, and blunted sector formats.
Frequency and Period Relationship
Frequency is inversely related to period; if one increases, the other decreases, and vice versa.
Scientific Notation
A shorthand method of writing very large or very small numbers using powers of ten.
Acoustic Pressure
The force per unit area that sound waves exert on a medium, a crucial acoustic variable.