Ultrasound Doppler Carotid Arteries

Indication: screening for extracranial vascular disease primarily at the carotid bifurcation

Strengths:
 Noninvasive
 Safe
 No ionizing radiation

Weaknesses:
 Operator dependent; can be significantly influenced by skills and bias of operator
 Of limited utility for disease above the region of the carotid bifurcation
 In 10% of patients, carotid bifurcation lies above angle of jaw, making ultrasound difficult or impossible
 Subject to errors of interpretation in cases of high-grade stenoses or complete occlusion
 Calcified plaques interfere with visualization of vascular lumen
 Difficulty visualizing tandem lesions
 Echolucency of acute thrombi (indistinguishable from flowing blood)

Comments:
 Carotid arteriography is necessary when surgical intervention is contemplated.
 Duplex color flow Doppler is the best initial screening test to evaluate the carotid arteries.

  • Imaging

Patient Instructions:
-
Sample Type:
Others
Result Time:
-
Storage & Transportation:
-
Cutoff Times:
-

30 minutes required for samples arrived at Cao Thang till receive by Laboratory

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