What is the term for the non-invasive study of blood flow used to examine the Proximal ICA?

The non-invasive study of blood flow used to examine the Proximal Internal Carotid Artery (ICA) is commonly referred to as Ultrasound Doppler. This technique utilizes high-frequency sound waves to create images of blood flow in the arteries and veins, allowing for the assessment of vascular conditions and blood flow dynamics.

Ultrasound Doppler is particularly effective for evaluating the ICA because it can provide real-time information about the speed and direction of blood flow. Additionally, it helps identify any abnormalities such as stenosis or occlusions that may affect blood circulation to the brain. The non-invasive nature of this procedure means that it can be performed safely without the need for special dyes or injections.

In contrast, other methods like an electrocardiogram focus on the heart's electrical activity rather than blood flow in vessels. Angiography involves the injection of contrast material and imaging under X-ray, which is invasive. Fluoroscopy also utilizes X-ray technology to visualize moving structures, but it does not specifically measure blood flow in a non-invasive manner like Ultrasound Doppler does.