Unit 4: Normal B-mode Flashcards
What is the purpose of b-mode image?
- Preliminary identification of arterties.
- Overview of examination
- Note course of vessels
- Identify plaque location
- Measure stenosis
- Asses plaque surface and echogenicity
- Detects other pathology.
What are some B-mode image control optimization?
- Use pre-set carotid
- Depth
- Grain
- Focus
- Beam to vessel angle.
- Transducer choice.
- Plane of insonation.
What is the best view for CCA?
Anterolateral.
What is the best view for the ICA?
Posterior-lateral
What is the purpose of transverse view?
- Overview for anatomy and disease.
- Orientation of ICA/ECA
- Preliminary identification of vessels.
- Measurements.
What side is the brachiocephalic artery?
Right.
How should you point the transducer in order to scan the BCA (right) or proximal CCA (left)
Point under the clavicle.
The distal CCA widens at what point?
At the carotid bulb.
Right side of the patient is on what side of the screen?
Left
Thyroid is _____ to CCA in low neck.
Medial.
Where does the bifurcation usually occur?
It usually occurs in the mid-neck.
When should you document the location of your carotid bifurcation?
If it is found very high or very low in the neck.
If the ICA and the ECA are directly over eachother, what does it yield in longitudinal?
“Y” or fork shape.
If the ICA and the ECA are close together what does it indicate?
A very small transducer motion in long view while pivioting.
How should you confirm the ICA and ECA?
With doppler.
How should you determine the end of the CCA?
You should find the FD.
What is the best window to obtain the best image of the CCA?
Anterolateral.
What is the purpose of B-mode in long?
- Identify plaque
- Measure stenosis
- Other pathology.
Where should the ICA point?
Earlobe
Where should the ECA point?
Angle of jaw.
What is the best plane for the ICA and the ECA?
Postero-lateral plane.
What is the carotid bulb?
Normal dilation of the carotid artery.
T/F:
The artery walls are parallel in the carotid bulb.
False!
The artery walls are NOT parallel in the carotid bulb.
Where does the bulb start?
It starts in the distal CCA and extends into the ICA, may include the ECA.
Where is the most common location for disease?
In the carotid bulb.
The mid ICA is how far from the FD?
1.5-3 cm from FD.
The distal ICA is how far from the FD?
>3 cm
How is the distal ICA best seen?
Best seen with the probe tip behind the ear with a postero-lateral approach.
Where can you find the proximal subclavian artery?
Above clavicle at neck.
How should the patient be positioned while scanning the vertebral artery?
Patients head should be straight and not to the side.
WHat kind of approach should you take while scanning the vertebral artery?
Anterior approach.
How can you find the vertebral artery?
Move probe laterally and point medially to see the vertebral processes.
T/F:
The vertebral artery is deep to the vein.
True.
