How is a dating scan performed? A dating scan is carried out by ultrasound. A sonographer, who is usually a radiographer or a midwife trained in ultrasound, will complete your scan. If the scan is after 10 weeks, ultrasound recordings are usually made through your abdomen.

When is best time for dating scan?

Between 8 – 12 weeks of pregnancy is a good time for a dating scan. A 2-D image of a baby at about 8-9 weeks. Small arms are becoming visible, sticking out slightly in the middle of the baby.