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Carotid Ultrasound (Principal Limitations). Only a small region of the arterial lumen can be evaluated at any one time. Discrete pulsed Doppler sample volume must be moved serially throughout the entire vessel within the B-mode image to get complete information on flow patterns.

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carotid ultrasound principal limitations
Carotid Ultrasound(Principal Limitations)
  • Only a small region of the arterial lumen can be evaluated at any one time.
  • Discrete pulsed Doppler sample volume must be moved serially throughout the entire vessel within the B-mode image to get complete information on flow patterns.
  • This process is tedious and flow disturbances confined to a small section of the vessel may be overlooked.
  • The complex 3-D features of flow in the bifurcation region are difficult to appreciate.