What do you need to prepare for before doing four-dimensional

Women do four-dimensional color Doppler ultrasound before, generally do not need to do special preparation, four-dimensional color Doppler ultrasound and ordinary color Doppler ultrasound examination, four-dimensional color Doppler ultrasound is only for the second trimester of the fetus for a full range of systematic screening, just do the examination takes longer than ordinary color Doppler ultrasound examination, so pregnant women need patience, do not worry. Therefore, it is recommended to pay attention to rest the first day, do not tire. To prepare milk, bread, chocolate and other foods in advance, in case the fetus continues to be motionless during the examination, thus affecting the four-dimensional color ultrasound examination. And before doing four-dimensional color ultrasound, you must eat to ensure that blood sugar is at a high level, so that the fetus can move normally. If necessary, you can also walk properly, or climb stairs to let the fetus move.