Vascular Lab Flashcards
1
Q
What does duplex scan mean?
A
It refers to an ultrasound scanning procedure recording both gray scale and Doppler analysis of blood flow direction and velocity.
2
Q
Which transducer is used for neck and extremities?
A
5-12 MHz Linear-array transducers
3
Q
Which transducer is used for the abdomen?
A
2.5-3.5 MHz Curved linear or Phased-array transducers.
4
Q
What is the best angle to get the brightest echo with gray-scale imaging and optimal imaging of the arterial wall?
A
90 degree.
5
Q
What is the best angle to get the best and accurate estimation of the velocity on the Doppler component of the duplex imaging?
A
45-60 degree.
6
Q
What is the minimum blood flow velocity that can be detected by the duplex scanners?
A
Duplex scanners can detect blood flow velocities < 5 cm/s.
