WHAT: Saline sonohysterogram is a simple outpatient ultrasound procedure designed to help the doctor look at the endometrial cavity (the inside part of the uterus) and the endometrium (the lining of the endometrial cavity).

WHY: A saline sonohysterogram evaluates the contour of the endometrial cavity, detecting conditions such as a uterine septum or bicornuate uterus. This information may be used to investigate problems like recurrent miscarriages or infertility.

HOW: The best time to perform a saline sonohysterogram is just after your period has finished, approximately day 7 to day 10 of a regular 28-day menstrual cycle.