Equation parameters include:
- Current Date
- Last Menstrual Period
- Ultrasound Date
- Crown Rump Length
- Biparietal Diameter
- Head Circumference
References
- Mul T, Mongelli M, Gardosi J. A comparative analysis of second-trimester ultrasound dating formulae in pregnancies conceived with artificial reproductive techniques. Ultrasound Obstet Gynecol. 1996 Dec;8(6):397-402. PubMed ID: 9014279
- Westerway SC, Davison A, Cowell S. Ultrasonic fetal measurements: new Australian standards for the new millennium. Aust N Z J Obstet Gynaecol. 2000 Aug;40(3):297-302. PubMed ID: 11065037
- Altman DG, Chitty LS. New charts for ultrasound dating of pregnancy. Ultrasound Obstet Gynecol. 1997 Sep;10(3):174-91. PubMed ID: 9339525
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