Basics/Physics Flashcards
how does a pizoelectric crystal work?
emits sound energy when electrical energy is appled to it
the echogenecity of a substance is dependent on what property of the given tissue?
density
what term indicates the ability to display objects lying close to each other separately?
resolution
which type of probes produce higher resolution?
high frequency
what is the focal zone of the ultrasound beam?
the narrowest region of the beam where the best resolution occurs
what property of sound waves is seen when looking at bowel gas?
scatter
how can you adjust the gain to reduce reverberation artifact?
turn down the gain to reduce reverberation artifact
what artifact is characterized by reverberation between transducer and echogenic surfaces like small stones or foreign bodies in tissue?
ring down artifact
what type of artifact occurs from origination from liquid between gas bubbles?
comet tail
