Understanding pelvic anatomy is important. Click on the thumbnails to view each image.

| Fig 1 This is a transabdominal ultrasound image in the longitudinal plane | Zoom |

| Fig 2 The uterus is usually situated centrally in the pelvis behind the full bladder (bladder is highlighted) | Zoom |

| Fig 3 In this image, the uterus is anteverted (tilted towards the anterior abdominal wall) | Zoom |

| Fig 4 In this image, the uterus is empty. But you can see the endometrium, or lining of the womb, as a bright white stripe in the centre of the uterus | Zoom |