Answers to Review Questions
Answers
What reflects echo waves better, tissue or liquid?
Tissue
Referring to the question above, how bright will tissue and liquid appear relative to each other?
Tissue will appear brighter
Do higher or lower frequency waves penetrate deeper in tissue?
Lower
Do higher or lower frequency waves produce a higher resolution image?
Higher
Where is lateral resolution the highest?
Focal zone
What appears brighter on an ultrasound image, anechoic or hypoechoic?
Hypoechoic
Which produces a higher resolution image, linear probe or phased-array probe?
Linear
Which probe has good temporal resolution?
Phased-array probe
If no lung present is on your ultrasound machine, what preset can be used instead?
Abdomen
Question 6 confused me – Brighter structures on image as per video was hyperechoic but answer to question was Hypoechoic.
Hey Carla, you are totally right in that hyperechoic describes tissue that is brighter than hypoechoic, however when comparing anechoic (totally black) to hypoechoic (low magnitude of brightness), hypoeechoic appears relatively ‘brighter’ since it is being compared to a complete lack of brightness. Hope that makes sense!
yes it does make sense now. thank you. I needed to read the question again.