"Ultrasound is good for identifying vascular structures in the lateral neck. The origin of the internal and external carotid arteries is the main point of sonographic interest as the carotid space superior to this cannot be visualised due to the mastoid process."
"Doppler tracing of vessel flow within the internal carotid is typical of low peripheral resistance (high diastolic peak), whereas the external carotid has high-resistance flow (lower diastolic peak, systolic peak higher than that of the internal carotid) 5"
Expected headings
"Terminology"
"Contents"
"Radiographic appearance"
"Ultrasound"
"CT"
"MRI"
"vagus nerve (CN X) - posterior to vessels in posterior notch; the only nerve present from oropharyngeal segment of the carotid sheath inferiorly"
"anteriorly: masticator space; parapharyngeal space"
"it branches within the neck; the first immediate branch is the superior thyroid artery"