At what depth is the anterior cerebral artery typically assessed during a TCD?

The anterior cerebral artery is typically assessed at a depth of approximately 50 mm during a transcranial Doppler (TCD) ultrasound. This depth corresponds to the anatomical location of the anterior cerebral artery when imaging through the temporal windows of the skull.

During TCD examinations, the depth is crucial for targeting specific cerebral vessels, and the anterior cerebral artery's depth of 50 mm is based on established protocols and anatomical studies. This information is essential for accurate assessment and monitoring of cerebral blood flow, especially in clinical scenarios such as evaluating patients for conditions like vasospasm or in monitoring acute stroke syndromes.

Other depths listed, such as 40 mm, 60 mm, or 70 mm, do not correspond to the typical assessment depth for this particular artery and may relate to other cerebral arteries or may be outside the standard practice guidelines established for effective TCD technique.