DIAGNOSTIC MEDICAL SONOGRAPHY
QUESTIONS AND CORRECT ANSWERS
Compare the frequency change that occurs with transducer A which is 1 centimeter
in thickness to transducer B that is 1.5 centimeters thick. Both have the same
diameter and the same electrical energy applied to the transducer.
- answers-transducer A has a higher frequency
How are returning echoes amplified?
- answers-increase the "gain control"
Returning waves to the transducer are best described as:
- answers-echoes
Select one advantage of 8-10 MHz (high) frequency transducer.
- answers-resolve objects small objects up to. 0.05 mm
Select one imaging disadvantage from viewing echoes from the area of the far
zone.
- answers-diminished resolution of objects
Select the best statement about echoes.
- answers-they are received by the transducer
Select the best statement that gives a characteristic of ultrasound waves.
- answers-they are mechanically produced
Select the characteristic that best describes piezoelectric effect.
- answers-compression and expansion of the crystal
Select the characteristic that best describes piezoelectric effect.
- answers-requires compression and expansion of the element
Select the characteristic that suited for an endorectal transducer/probe.
- answers-high frequency
QUESTIONS AND CORRECT ANSWERS
Compare the frequency change that occurs with transducer A which is 1 centimeter
in thickness to transducer B that is 1.5 centimeters thick. Both have the same
diameter and the same electrical energy applied to the transducer.
- answers-transducer A has a higher frequency
How are returning echoes amplified?
- answers-increase the "gain control"
Returning waves to the transducer are best described as:
- answers-echoes
Select one advantage of 8-10 MHz (high) frequency transducer.
- answers-resolve objects small objects up to. 0.05 mm
Select one imaging disadvantage from viewing echoes from the area of the far
zone.
- answers-diminished resolution of objects
Select the best statement about echoes.
- answers-they are received by the transducer
Select the best statement that gives a characteristic of ultrasound waves.
- answers-they are mechanically produced
Select the characteristic that best describes piezoelectric effect.
- answers-compression and expansion of the crystal
Select the characteristic that best describes piezoelectric effect.
- answers-requires compression and expansion of the element
Select the characteristic that suited for an endorectal transducer/probe.
- answers-high frequency
