Single best parameter to assess gestational age in first trimester?: (A) CRL (Crown Rump Length), (B) BPD (Biparietal diameter), (C) HC (Head Circumference), (D) FL (Femur Length)
Answer is A. Best parameter to assess gestational age- First trimester - CRL (Crown Rump Length) Second trimester - BPD (Biparietal Diameter) Third trimester - BPD (Biparietal Diameter) Best Overall - CRL (Crown Rump Length)