Edelmen book (pulsed waves)

Question 1

Actual time from the start of a pulse to the end of that pulse. “the on time”

Answer 1

Pulse duration / us

Question 2

Distance that a pulse occupies in space from the start to the end of a pulse

Answer 2

Spatial pulse length / mm

Question 3

The time from the start of one pulse to the start of the next pulse. Includes the listening time

Answer 3

Pulse repetition period , ms

Question 4

T/F prp is unrelated to period

Answer 4

TRUE

Question 5

Number of pulses that an us transmits into the body each second

Answer 5

Pulse repetition frequency / hz

Question 6

T/F prf is unrelated to frequency

Answer 6

TRUE

Question 7

Percentage of fraction of time that the system transmits a pulse

Answer 7

Duty factor

Question 8

Shallow imaging qualities (listening time, PRP, PRF, DF)

Answer 8

less listening time, shorter PRP, higher PRF, higher DF

Question 9

When adjusting the imaging depth, the system changes the ___

Answer 9

PRP, PRF, and DF

Question 10

What is adjustable within these parameters

Answer 10

PRP, PRF, duty factor

Question 11

PRP has what relation with the maximum imaging depth

Answer 11

Directly related

Question 12

PRF is ___ related to depth

Answer 12

Inversely

Question 13

PRP formula for 13 microsecond rule

Answer 13

PRP = depth cm x 13 us/cm

Question 14

When the depth of view is set to 10 cm, the prp is

Answer 14

10 x 13 = 130 us

Question 16

What determines pulse duration

Answer 16

The source of a wave

Question 17

Pulse duration formula

Answer 17

Period x # of cycles in a pulse

Question 18

Is pulse duration adjustable

Answer 18

No unless changing transducers

Question 19

Spl formula

Answer 19

Wavelength x # of cycles in the pulse

Question 20

Prf has the same unites as frequency which are

Answer 20

Hertz , hz , or per second (1/second)

Question 21

If the maximum imagine depth is unchanged then pro and prf ____

Answer 21

Stay the same

Question 22

If there is a longer pulse duration used then duty factor is ____

Answer 22

Increased

Question 23

Duty factor formula

Answer 23

Pulse duration / PRP

Question 24

Duty factor in CW is what value

Answer 24

1.0 or 100%

Question 25

What happens to the duty factor when depth of view increases

Answer 25

Decreases