When is the best time to determine gestational age based on biparietal diameter through ultrasound?
a. 4 to 6 weeks
b. 5 to 7 weeks
c. 7 to 10 weeks
d. 12 to 20 weeks
D
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A During this time frame, the gestational age is determined by measuring the
crown-rump length.
B During this time frame, the gestational age is determined by measuring the
crown-rump length.
C During this time frame, the gestational age is determined by measuring the
crown-rump length.
D The biparietal diameter, a method of assessing gestational age during the last half
of pregnancy, is most accurate from 12 to 20 weeks.
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