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Reference Manual 78

Estimated Fetal Weight Formula

Methods using (BPD, AC)

Shepard Method [grams]

[Equation]

1000×10

(-1.7492+0.166×(BPD)+0.046×(AC)-0.002646×(AC) ×(BPD))

[Input Range]

AC :15.5~40.0 cm

BPD : 3.1~10.0 cm

EFW : 224~4925 g

[Reference]

Shepard MJ, et al, “ An Evaluation of Two Equations for Predicting Fetal Weight by Ultrasound,”

American Journal of Ob & Gyn, January 1982; 142(1):47-54

Hadlock Method [grams]

[Equation]

(1.1134+(0.05845×AC)-(0.000604×AC^2)-(0.007365×BPD^2)+(0.000595×BPD×AC)+(0.1694×BPD))

[Reference]

Hadlock F, et al, “Sonographic Estimated of Fetal Weight,” Radiology 1984:150:535-540

Merz Method [grams]

[Equation]

-3200.4+157.07× AC+15.9×BPD^2

[Reference]

E. Merz, W. Goldhofer, E. Timor-Tritsch “Ultrasound in Gynecology and Obstetrics” Textbook

and Atlas, 1991, Georg Thieme Verlag, 308-338

Method using (BPD, FL, FTA)

Osaka university [grams]

FW(BPD,FL,FTA) = 1.256*BPD³+3.5065*FTA*FL+6.3

Method using (BPD, APTD, TTD, FL)

Tokyo 2 university Method [grams]

[Equation]

1.07*BPD³+3.42*APTD*TTD*FL

[Reference]

Jpn J Med Ultrasonics Vol.23. No.12 (1996)

Method using (BPD, APTD, TTD, SL)

Shinozuka 2 Method [grams]

[Equation]

1.07*BPD³+2.91*APTD*TTD*SL

[Reference]

Shinozuka, N et, al, Am J Obstet Gynecol 157:1140, 1987

Method using (BPD, TTD)

Hansmann’s fetal weight [grams]

[Equation]

((-1.05775×BPD)+(0.649145×TTD)+(0.0930707×BPD

)-(0.020562×TTD

)+(0.515263))×1000.0

1 2 ... 379 380 381 382 383 384 385 386 387 388 389 ... 441 442

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