The procedure typically involves the following steps:
The patient is positioned on an X-ray table. A local anesthetic may be applied to the injection site. A contrast dye is injected into a vein, usually in the foot or arm. X-ray images are taken to visualize the veins. The patient may be asked to change positions to get different views.
After the procedure, the patient is usually observed for a short period to ensure there are no adverse reactions to the contrast dye.