early pregnancy - Cervical assessment
12 weeks onwards
Transvaginal ultrasound cervical measurement is a safe and effective technique to assess the cervix in pregnancy. In early pregnancy, ultrasound is very helpful with the diagnosis of cervical incompetence. This diagnosis is made when the cervical length has shortened to less than 20 mm. Sometimes funneling is also seen, this is where the internal portion of the cervix, internal os (portion of the cervix closer to the baby) has begun to dilate. The external os will be unaffected if diagnosed in time.
In advanced pregnancy, Ultrasound measurement of the cervix is used to predict increased risk of preterm delivery in selected patients. Normal results can help avoid unnecessary interventions.
- This scan is done vaginally
- Will take 20 minutes
- Confirm fetal heart
- Images will be provided