Transcranial Doppler

Transcranial Doppler is used to identify and interrogate the intracerebral arterial system. Normally the skull is impenetrable to Ultrasound waves, but using certain windows allows adequate penetration to monitor cerebrovascular hemodynamics.

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Lower Extremity Venous Duplex Protocol

Veins are blood vessels that carry deoxygenated blood toward the heart (with the exception of the pulmonary and portal veins which carry oxygen rich blood to the left atrium and liver respectively).