A 28-year-old primigravida presents to the antenatal clinic at 12 weeks of gestation for dating of pregnancy. Transvaginal ultrasound is performed. Which of the following is the most common and most reliable parameter for accurate dating of pregnancy in the first trimester?

See the options, answer & explanation

Sign in free to reveal the answer choices, the correct answer, the detailed explanation, and AI-powered insights for this question.