Consequently, ultrasound examination should be offered routinely to all pregnant women The scan, which is usually performed at 18–23 weeks of pregnancy, should be carried out to a high standard and should include systematic examination of the fetus for the detection of The finding that ultrasound imaging does not improve estimates after 24 weeks of gestation implies that a LMP, if reliable, may be used in clinical practice after 24 weeks of gestation (Table 5) The results show that initial dating is always more reliable than in later pregnancy, so the estimated date of delivery should not be changed duringHere's some more information on how weeks, months and trimesters are broken down in pregnancy How big is my baby at 24 weeks?
Pregnancy Week 34
