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Frequently Asked Questions

Angiography

An angiogram is a specialized x-ray examination that studies the arteries of the body. The exam is conducted by placing a small plastic tube ("catheter") into the artery of interest and injecting x-ray contrast material (x-ray "dye") through the tube. As the dye flows through the artery, images are obtained that show the artery and it's branches. The size, shape and configuration of the arteries being studied can be assessed from these images.

The specific details of how angiograms are done cannot be fully covered here but the general steps involved in most angiograms are as follows: The tissues in the region of the artery of interest are "frozen" with local anaesthetic. A hollow needle is advanced into the channel of the artery. A thin guiding wire is passed through the needle into the artery. The needle is removed over the wire which is left in place. The plastic catheter is advanced over the wire into the artery; the wire is removed. The catheter is positioned, x-ray dye is injected through it and pictures are taken.

There are many indications for angiography:

• To study arteries for degenerative narrowing or blockage.
• To assess the size of arteries for the formation of aneurysms.
• To assess congenital malformations of arteries.
• To assess the patient's normal anatomy pre-operatively in specific circumstances.
• To assess the arterial system of tumors.

Angiography Equipment:

Angiogram Unit	Angio unit control panel

In specialized centers interventional angiography can play a direct role in the treatment of:

• Blocked or narrow vessels.
• Congenital malformations.
• Some tumors.

Sample Images:

Abdomen Angiogram	Abdomen Angiogram

Angio - pelvis	Angio - Lt. leg