Lecture 29 DA Flashcards Preview

Anatomy: Viscera and Visceral Systems > Lecture 29 DA > Flashcards

Flashcards in Lecture 29 DA Deck (6):
1

What frequency is ultrasound?

Above 20kHz.

2

What doesn't transmit ultrasound very well?

Bone and air.

3

How much of the energy produced by ultrasound is in the returning signal?

1/10,000 of the original signal.

4

What does black and white reflect in ultrasound imagery?

Black - weak reflection.
White - strong reflection.

5

What effect can ischaemia have on chordae tendinae?

They can snap as a result.

6

What is the consequence of the atrial vestibules?

They can collect thrombi, which can embolise to the systemic circulation.