ultrasound & vasography

why it is done

Ultrasound can often be used to detect a blockage in the male ducts. Vasography is a procedure that is only used when the ultrasound is uncertain.

how it is done

A small ultrasound probe is placed against the scrotum or into the rectum. If vasography is performed, radiographic dye is injected into the vas deferens (a tube connecting the site where the sperm is stored to the duct that expels it) and ejaculatory ducts. An X-ray is taken as the dye flows through the ducts.