Chapter 5 Terms/ Relationships
Spatial, peak, average, temporal, and pulsed are the_____.
intensities
_____ refers to distance or space.
Spatial
____ is the maximum value.
Peak
____ is the mathematical middle value.
Average
____ refers to all time, transmit, and receive.
Temporal
______ refer only to the transmit time.
Pulsed
An ultrasound beam ____ have the same intensity at different locations.
does not
A pulsed ultrasound beam ____ have the same intensity at different times.
does not
A pulses ultrasound beam ____ have the same intensity at different times during the pulse.
does not
____ is the average intensity for the pulse duration only.
Pulsed
All intensities have units of _____.
W/cm squared
The different measurements of intensities are important in the study of _____.
bioeffects
_____ is the most relevant intensity with respect to tissue heating.
SPTA
The ____ describes the relationship of bea intensities with time. It is a unitless number with a value between 0 and 1.
duty factor