uterine lining average thickness
Office hysteroscopy - we are looking up from the cervix at the top of the uterine cavity. The tubal ostia (openings of fallopian tubes into uterus) are the dark spots at 3 and 9 o'clock. Ultrasound images of a uterus with a normal endometrial lining thickness of 11 mm. Same image showing the outer contour of the uterus outlined in red and the triple stripe endometrial (uterine) lining outlined green. Cervical canal is well visualized at lower right.