FujiFilm SonoSite X-Porte User Manual page 203

Crown Rump Length (CRL)
Hadlock, F., et al. "Fetal Crown-Rump Length: Re-evaluation of Relation to Menstrual Age (5-18 weeks)
with High-Resolution, Real-Time Ultrasound." Radiology, 182: (February 1992), p.501-505.
Hansmann, M., et al. Ultrasound Diagnosis in Obstetrics and Gynecology. New York: Springer-Verlag,
(1986), p.439.
Osaka University. Ultrasound in Obstetrics and Gynecology. (July 20, 1990), p.20 and p.96.
Tokyo University. "Gestational Weeks and Computation Methods." Ultrasound Imaging Diagnostics, 12:1
(1982-1), p.24-25, Table 3.
Femur Length (FL)
Chitty, L. S. and D.G. Altman. "New charts for ultrasound dating of pregnancy." Ultrasound in Obstetrics
and Gynecology 10: (1997), p.174-179, Table 8, 186.
Hadlock, F., et al. "Estimating Fetal Age: Computer-Assisted Analysis of Multiple Fetal Growth
Parameters." Radiology, 152: (1984), p.497-501.
Hansmann, M., et al. Ultrasound Diagnosis in Obstetrics and Gynecology. New York: Springer-Verlag,
(1986), p.31.
Osaka University. Ultrasound in Obstetrics and Gynecology. (July 20, 1990), p.01-102.
University of Tokyo, Shinozuka, N. FJSUM, et al. "Standard Values of Ultrasonographic Fetal Biometry."
Japanese Journal of Medical Ultrasonics, 23:12 (1996), p.886.
Fetal Trunk Cross-Sectional Area (FTA)
Osaka University. Ultrasound in Obstetrics and Gynecology. (July 20, 1990), p.99-100.
Gestational Sac (GS)
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), p.76.
Gestational sac measurements provide a fetal age based on the mean of one, two, or three distance
measurements; however, Nyberg's gestational age equation requires all three distance measurements for
an accurate estimate.
Tokyo University. "Gestational Weeks and Computation Methods." Ultrasound Imaging Diagnostics, 12:1
(1982-1).
Head Circumference (HC)
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, p.182.
Hadlock, F., et al. "Estimating Fetal Age: Computer-Assisted Analysis of Multiple Fetal Growth
Parameters." Radiology, 152: (1984), p.497-501.
Hansmann, M., et al. Ultrasound Diagnosis in Obstetrics and Gynecology. New York: Springer-Verlag,
(1986), p.431.
Measurement references 6-17