All of the following are commonly used for estimation of gestational age in mid trimester EXCEPT: March 2013
Ans. B i.e. Crown Rump Length CRL is most accurate with an error of 2.1 days in the first trimester BPD, FL, HC (head circumference) & AC is commonly used for dating thereafter.
Biparietal diameter
Crown Rump Length
Abdominal circumference of fetus
Femur length