Which condition is NOT typically associated with the use of TCD?

Temporal arteritis, also known as giant cell arteritis, is primarily an inflammatory condition affecting the medium to large-sized arteries, particularly the temporal arteries. It typically presents with symptoms like headache, jaw claudication, and vision problems, and the diagnosis is generally established through clinical evaluation and temporal artery biopsy rather than through imaging studies assessing blood flow dynamics.

In contrast, transcranial Doppler (TCD) ultrasound is a non-invasive technique that evaluates blood flow in the major cerebral arteries. It is particularly useful in conditions such as acute stroke assessment, where it helps in identifying stenosis, occlusions, and vasospasm. Intracranial stenosis can also be directly assessed using TCD due to its ability to measure flow velocities through the affected vessels. Subclavian steal syndrome involves a flow reversal in the vertebral artery due to stenosis in the subclavian artery, which TCD can effectively evaluate by assessing flow patterns.

Thus, while TCD is invaluable for a variety of cerebrovascular conditions, temporal arteritis does not typically involve direct assessment with this technique, as it focuses more on the inflammatory aspects of the disease rather than the hemodynamics that TCD evaluates.