Hart is located in southeastern Castro County at 34Â°23â²12â³N 102Â°6â²54â³W / 34.38667Â°N 102.11500Â°W / 34.38667; -102.11500 (34.386723, -102.115035), along Texas State Highway 194. Dimmitt, the county seat, is 16 miles (26 km) to the northwest, and Plainview is 28 miles (45 km) to the southeast.
An intracranial neurovascular exam is also known as a Transcranial Doppler (TCD) study. TCD is a non-invasive, painless ultrasound technique that uses high-frequency sound waves to measure the rate and direction of blood flow inside vessels.CD is a non-invasive, painless ultrasound technique that uses high-frequency sound waves to measure the rate and direction of blood flow inside vessels.
Transcranial Doppler. A transcranial Doppler (TCD) ultrasound evaluates both the direction and velocity of the blood flow in the major cerebral arteries of the brain. This type of ultrasound exam is also used during surgical procedures to monitor blood flow in the brain.TCD may be used alone or with other diagnostic exams such as magnetic resonance imaging (MRI), magnetic resonance angiography (MRA) and computed tomography (CT) scans.his type of ultrasound exam is also used during surgical procedures to monitor blood flow in the brain. TCD may be used alone or with other diagnostic exams such as magnetic resonance imaging (MRI), magnetic resonance angiography (MRA) and computed tomography (CT) scans.