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Radiology 4th yr > Ultrasound > Flashcards

Ultrasound Flashcards

1
Q

What is sound/

A

Mechanic energy, not EMR

Travels in matter,NOT in vaccum

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2
Q

When is u/s not effective?

A
  • Air filled organs
    +Lungs
    +Bowel
  • High reflectors
    +Bones / bone surrounded organs (brain)
    +Prostheses
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3
Q

The time u detect the ECHO is directly proportional to….?

A

The distance of reflector

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4
Q

The localization[depth] of the tissue is determined by ?

A

The echo time

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5
Q

The tissue characterization is determined by ..?

A

energy of the echo

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Radiology 4th yr (14 decks)

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