MCQ – 39585

Correct Answer » C Explanation

Cerebral angiography is an imaging technique used to visualize the arteries and veins of the brain using a radiopaque contrast dye.

In modern practice, the procedure is usually performed using the Seldinger technique, where the contrast dye is injected through a catheter introduced into the femoral artery.

Procedure

1. A catheter is inserted into the femoral artery in the groin.

2. The catheter is advanced through the aorta into the carotid or vertebral arteries.

3. Contrast dye is injected, and X-ray or digital subtraction angiography images are taken to visualize cerebral vessels.

Explanation of Other Options

A. Brachial artery
This approach was used historically but is rarely used today because the femoral artery provides easier catheter access.

B. Cubital vein
Venous injection is used in CT angiography or MR angiography, but conventional cerebral angiography requires arterial access.

D. Carotid artery
Direct carotid puncture was used in older techniques but is now avoided due to higher risk of complications.