Chitty, L. S. And D.g. Altman. "New Charts For Ultrasound Dating Of Pregnancy". Ultrasound In Obstetrics And; Hansmann, M., Et Al. Ultrasound Diagnosis In Obstetrics And Gynecology. New York: Springer-Verlag, (1986); Osaka University. Ultrasound In Obstetrics And Gynecology. (July 20, 1990); University Of Tokyo, Shinozuka, N. Fjsum, Et Al. "Standard Values Of Ultrasonographic Fetal Biometry". Japanese Journal Of Medical Ultrasonics, 23:12 (1996) - FujiFilm SonoSite M-Turbo Manual De Usuario

University of Tokyo, Shinozuka, N. FJSUM, et al. "Standard Values of Ultrasonographic Fetal Biometry".
Japanese Journal of Medical Ultrasonics, 23:12 (1996), 886.
Área transversal del tórax fetal (ATF)

Osaka University. Ultrasound in Obstetrics and Gynecology. (July 20, 1990), 99-100.

Saco gestacional (SG)

Hansmann, M., et al. Ultrasound Diagnosis in Obstetrics and Gynecology. New York: Springer-Verlag, (1986).

Nyberg, D.A., et al. "Transvaginal Ultrasound". Mosby Yearbook, (1992), 76.
Las mediciones del saco gestacional proporcionan una edad fetal basada en el promedio de mediciones
de una, dos o tres distancias; sin embargo, la ecuación de Nyberg para la edad gestacional requiere la
medición de las tres distancias para proporcionar un cálculo exacto.

Tokyo University. "Gestational Weeks and Computation Methods". Ultrasound Imaging Diagnostics, 12:1

(1982-1).
Perímetro cefálico (PC)

Chitty, L. S. and D.G. Altman. "New charts for ultrasound dating of pregnancy". Ultrasound in Obstetrics and

Gynecology 10: (1997), 174-191, Table 5, 182.
Hadlock, F., et al. "Estimating Fetal Age: Computer-Assisted Analysis of Multiple Fetal Growth Parameters."
Radiology, 152: (1984), 497-501.

Hansmann, M., et al. Ultrasound Diagnosis in Obstetrics and Gynecology. New York: Springer-Verlag,

(1986), 431.
Húmero (LH)
Jeanty, P.; F. Rodesch; D. Delbeke; J. E. Dumont. "Estimate of Gestational Age from Measurements of Fetal
Long Bones". Journal of Ultrasound in Medicine. 3: (February 1984), 75-79.
Diámetro frontooccipital (DFO)
Hansmann, M., et al. Ultrasound Diagnosis in Obstetrics and Gynecology. New York: Springer-Verlag,
(1986), 431.
Tibia
Jeanty, P.; F. Rodesch; D. Delbeke; J. E. Dumont. "Estimate of Gestational Age from Measurements of Fetal
Long Bones". Journal of Ultrasound in Medicine. 3: (February 1984), 75-79.
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