Can it be changed

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created 6 years ago by Annabelle
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1

Period

No

It is determined by the sound source

2

Frequency

No

It is determined by the sound source

3

Amplitude

Yes

by increasing the power, the electrical current sent to the transducer is increased. This produced a more violent vibration of the piezoelectric crystal within the transducer and stronger ultrasound wave.

4

Power

Yes

Power is determined initially by the sound source only, However power decreases as sound propagates. This depends on the characteristics of both the sound wave and the medium.

Power can be altered by the sonographer. A control on the ultrasound system allows the sonographer to alter initial power.

5

Intensity

Yes

Intensity is determined initially by the sound source only, However intensity decreases as sound propagates. This depends on the characteristics of both the sound wave and the shape of the sound beam

Intensity can be altered by the sonographer. A control on the ultrasound system allows the sonographer to alter initial intensity.

6

Wavelength

No

Wavelength is the only parameter determined by both the source and the medium

7

Propagation speed

No

The propagation speed is determined only by the medium through which it travels

8

Pulse Duration

NO

Determined by the sound source

9

Spatial Pulse Length

No

Determined by both the sound source and the medium in which it travels

10

Pulse Repetition Period

Yes

adjusting the scan's depth of view also adjust Pulse Repetition Period

11

Pulse Repetition Frequency

Yes

adjusting the scan's depth of view also adjust Pulse Repetition Period