Afterwards, you/your child will have a scan called a DEXA (stands for Dual Energy X-Ray Absorptiometry) scan done to assess your/your child's body composition. A DEXA scan does not hurt but requires that you/your child lie still on the table while the scanner moves over you/your child. Like all scans, there is some radiation exposure. However, the total amount of radiation is very small (about half the radiation exposure of a normal chest xray). This should not cause any problem for you/your child.