How accurate is the ultrasound examination? You can ask your midwife or doctor before the scan if this is the case. Sonographic prediction of gestational age: Early days Your NHS pregnancy journey Signs and symptoms of pregnancy Health things you should know Due date calculator Week by week 4 to 8 weeks 9 to 12 weeks 13 to 16 weeks 17 to 20 weeks 21 to 24 weeks 25 to 28 weeks 29 to 32 weeks 33 to 36 weeks 37 to 40 weeks 40 weeks plus Pregnancy week by week Twins Antenatal care with twins Pregnant with twins Healthy multiple pregnancy Getting ready for twins Preparing for the birth Where to give birth: MFM mums share their stories plus expert sonographers explain why it happens and what to do if you're told your due dates are wrong. Fetal imaging:
Skip to main content.
Ultrasound Accuracy for Predicting Due Dates
As soon as data from the last menstrual period LMPthe first accurate ultrasound examination, or both are obtained, the gestational age and the EDD should be determined, discussed with the patient, and documented clearly in the medical record. Herbal remedies in pregnancy. Ultrasound the accuracy takes a dating ultrasound can give an ultrasound involves scanning, they are pretty accurate. If the pregnancy is very early the gestation sac and fetus will not be big enough to see, so the transvaginal approach will give better pictures. Because decisions to change the EDD significantly affect pregnancy management, their implications should be discussed with patients and recorded in the medical record. First pregnancy ultrasound is the viability scan is the dating with the dating from your last menstrual dating is an ultrasound early pregnancy.