For women of reproductive age, the endometrial stripe thickens and thins according to their menstrual cycle. The stripe can be anywhere from slightly less than 1 millimeter (mm) to slightly more than 16 mm in size. It all depends on what phase of menstruation youre experiencing when the measurement is taken.

What is normal endometrium thickness?

Normal thickness According to the Radiological Society of North America (RSNA), the endometrium is at its thinnest during menstruation, when it usually measures between 2–4 millimeters (mm) in thickness.

Is 6 mm endometrial thickness normal?

Many studies have found a thin endometrium to be associated with a lower implantation rate, but no absolute cutoff for endometrial thickness exists; good pregnancy rates have been reported in cycles with endometrium <6 mm, and a successful pregnancy has been reported with endometrial thickness of only 4 mm [17].