1
Q
What is the level of the carotid bifurcation
A
4th cervical vertebrae
2
Q
Where does vertebral artery enter vertebrae?
A
at c6
3
Q
Frequency range of transducer for neck vs intracranial imaging?
A
Neck - 4-12 MHz
Intracranial 2-4 MHz
4
Q
Where do you begin the carotid study in transverse plane
A
anterior to SCM
5
Q
Go through main starting points steps of insonating carotid artery
A
- Transverse -start anterior to SCM
- Longitudinal - start anterior to SCM
- Color flow doppler - return to longitudinal image of proximal carotid artery
6
Q
Steps of doppler insonation of cervical ICA
A
- Longitudinal prox ICA w/ color flow on
- Adjust scale first to minimize aliasing
- Adjust gain and power to minimize bleeding
7
Q
Where is starting gate and power?
A
Starting gate 10-15mm, power 100%
