IUCD's and Mirenas

Intra-uterine device location

Ultrasound examination is the best way to locate an intra-uterine contraceptive device or a Mirena. If you are able to feel the string, then it is probably in the right position but the only way to be absolutely sure is by ultrasound examination.


When would I need an ultrasound examination?

  • Your doctor may request an ultrasound examination to check the location of the IUCD or Mirena if you have pain or bleeding after the procedure
  • You cannot feel the string
  • It was a difficult insertion
  • There were multiple fibroids which could interfere with the insertion
  • There is any suspicion of pregnancy
  • You are not experiencing the expected effect from the IUCD

What type of examination?

We usually use the trans-vaginal approach because we get much better views, but occasionally the IUCD is a long way from the vagina and uterus, and so we need the trans-abdominal approach to give us a more global view of the pelvis.

Three-dimensional ultrasound is complementary to two-dimensional ultrasound as you can see from the images below.

This diagram of a Mirena IUCD shows how it works.

A Mirena IUCD correctly positioned in the uterus.

A Mirena IUCD rotated in the top of the uterus causing pain and bleeding. It was easily removed.