Trans-Cranial Doppler Ultrasound-TCD

What is Trans-Cranial Doppler (TCD)

TCD is a machine that uses ultrasound (similar to the ultrasound that is used during pregnancy) to detect areas of increased blood flow in the blood vessels of the brain. When blood vessels are narrowed due to sickle cell damage, the blood makes a louder noise as it travels through the narrow area. This is like the noise in a water hose when you make the hose bend. If there is faster flow, that means that the blood vessel may be narrower, and there is a greater risk of possibly having a stroke in the future.

For more information click on the links below:

What is a Stroke?

What happens during a TCD?