Question

A sonographer is using a 3 MHz transducer and increases the output power to visualize structures that are positioned deeper in the patient. No other controls are adjusted. Would each of the following parameters increase, decrease, or remain the same?

A. Period
B. Frequency
C. Wavelength
D. Speed
E. Power (initial)
F. Intensity (initial)
G. Pulse Duration
H. PRF
I. Duty Factor
J. Spatial Pulse Length
K. Pulse Repetition Period

Answer 1

When a sonographer increases the output power of a 3 MHz transducer to visualize deeper structures, the period, frequency, and wavelength remain the same. The power and intensity increase, while the other parameters remain unchanged.

Step-by-step explanation:

When a sonographer uses a 3 MHz transducer and increases the output power to visualize structures that are positioned deeper in the patient, the following parameters would change:

1. Period: The period would remain the same since it is determined by the frequency of the transducer.
2. Frequency: The frequency would remain the same since it is determined by the transducer.
3. Wavelength: The wavelength would remain the same since it is determined by the transducer.
4. Speed: The speed of sound in tissue would remain the same.
5. Power (initial): The power would increase since the output power is being increased.
6. Intensity (initial): The intensity would increase since it is directly proportional to power.
7. Pulse Duration: The pulse duration would remain the same since it is determined by the transducer.
8. PRF (Pulse Repetition Frequency): The PRF would remain the same since it is determined by the transducer.
9. Duty Factor: The duty factor would remain the same since it is determined by the transducer.
10. Spatial Pulse Length: The spatial pulse length would remain the same since it is determined by the transducer.
11. Pulse Repetition Period: The pulse repetition period would remain the same since it is determined by the transducer.