Flashcards in Lecture 29 DA Deck (6):
What frequency is ultrasound?
What doesn't transmit ultrasound very well?
Bone and air.
How much of the energy produced by ultrasound is in the returning signal?
1/10,000 of the original signal.
What does black and white reflect in ultrasound imagery?
Black - weak reflection.
White - strong reflection.
What effect can ischaemia have on chordae tendinae?
They can snap as a result.