CHAPTER 3: UNDERSTANDING ULTRASOUND SYSTEM CONTROLS
1. Which of the following is the least frequently used mode used during TEE examinations?
c. Continuous-wave Doppler
d. Two-dimensional gray-scale imaging
2. Two-dimensional gray scale is considered what type of imaging?
3. The most important control for two-dimensional gray-scale imaging is:
4. Time gain compensation is a control that allows the operator to:
a. Adjust color Doppler velocity
c. Compensate for ultrasound attenuation
d. Decrease the output power
5. The two-dimensional compression control changes:
6. The zoom control is used in order to:
b. Enhance area of interest
7. Annotation is used for which of the following purposes?
c. Create an ultrasound report
d. Control overall system gain
8. Ultrasound harmonic frequencies are the result of:
b. Strong reflectors in the near field
c. Propagation of ultrasound through tissue
d. Weak reflectors in the far field