Lecture 3

CT angiography of the cerebral arteries is a noninvasive technique that uses CT imaging and contrast injection to visualize the arteries of the head and neck. It can detect abnormalities such as aneurysms and atherosclerosis. The procedure involves injecting iodinated contrast into a vein while obtaining a CT scan from the neck up. The timing of the scan is calculated using a test bolus to image the arteries during the peak contrast enhancement phase. Post-processing techniques like 3D rendering and curved reformats are used to interpret the images.