Ultrasound Physics Ch 5

spatial

refers to distance or space

peak

maximum value

average

mathematical middle value

temporal

refers to all time, transmit, and receive

pulsed

refers only to the transmit time

spatial peak intensity

the beam’s intensity at the location where it is maximum

spatial average intensity

the average intensity across the beam’s entire cross-sectional area

temporal peak intensity

measuring the intensity of the beam at the instant in time of its maximal value

Imax

determining the average intensity during the most intense half-cyle

pulse average intensity

taking the average intensity during the pulse duration - the transit time

temporal average intensity

averaging the intensity during the entire pulse repetition period - both the transmit and receive times