Obstetrical Imaging is part of the Normal Pregnancy and Antenatal Care section of OB & G. Practise 13 exam-style MCQs for NEET PG, FMGE, INI-CET and NEET SS, each with the correct answer and a detailed explanation.
First-trimester dating by crown–rump length and the ultrasound criteria for anembryonic gestation and embryonic death are the core of these Obstetrical Imaging MCQs, distilling early-pregnancy ultrasound into high-yield NEET PG revision.
Sample Obstetrical Imaging MCQs with answers
Sample MCQ #1
A patient presents for her first initial antenatal visit after performing a home pregnancy test and gives a last menstrual period of about 8 weeks ago. She says she is not entirely sure of her dates, however because she has a long history of irregular menses. Which of the following is the most accurate way of dating the pregnancy?
ADetermination of uterine size on pelvic examination
BQuantitative serum hCG levels
CCrown rump length on abdominal or vaginal examination
DDetermination of progesterone level along with serum hCG level
Show Answer & Explanation ▾
✓ Correct Answer: C. Crown rump length on abdominal or vaginal examination
The most accurate way of dating the pregnancy in first trimester would be (C): Crown rump length on abdominal or vaginal examination. This method is more reliable than relying on the last menstrual period, especially in cases of irregular menstrual cycles. Crown rump length provides a more precise estimation of gestational age based on the measurement from the top of the baby's head to its bottom. Reference: Dutta Obs. 7/e, p 106
Sample MCQ #2
A patient presents for her first initial OB visit after performing a home pregnancy test and gives a last menstrual period of about 8 weeks ago. She says she is not entirely sure of her dates, however because she has a long history of irregular menses. Which of the following is the most accurate way of dating the pregnancy?
ADetermination of uterine size on pelvic examination
BQuantitative serum hCG levels
CCrown rump length on abdominal or vaginal examination
DDetermination of progesterone level along with serum hCG level
Show Answer & Explanation ▾
✓ Correct Answer: C. Crown rump length on abdominal or vaginal examination
The most accurate way of dating the pregnancy in first trimester would be (C): Crown rump length on abdominal or vaginal examination. This method is more reliable than relying on the last menstrual period, especially in cases of irregular menstrual cycles. Crown rump length provides a more precise estimation of gestational age based on the measurement from the top of the baby's head to its bottom. Reference: Dutta Obs. 7/e, p 106
Sample MCQ #3
A P2 + 1 female comes with amenorrhea of 5 weeks. Her UPT is +ve. On USG, Gestational and yolk sacs are seen in the uterus. No fetal pole is visible. No fetal cardiac activity is seen. CRL is 8 mm and MSD = 28 mm. What is the next best step?
AAdvise MTP as it is nonviable pregnancy
BHigh probability of nonviable pregnancy- but still repeat scan after 7 days to confirm
CCan be ectopic pregnancy - give methotrexate
DHigh probability of viable pregnancy-repeat scan after 7 days
Show Answer & Explanation ▾
✓ Correct Answer: B. High probability of nonviable pregnancy- but still repeat scan after 7 days to confirm
An embryonic gestation is diagnosed when the mean gestational sac diameter measures 25 mm and no embryo is seen. Embryonic death is also diagnosed if an embryo measuring 7 mm has no cardiac activity. So in the question – MSD is 28 mm and CRL 8 mm and still no cardiac activity or fetal pole is visible. It has to be a nonviable pregnancy. In this case whether we should perform immediate MTP or repeat scan after 7 days is suggested by High Risk Pregnancy 4/e, p 108. If fetal pole is not seen and MSD 25 mm then there is high probability of a non viable pregnancy. Repeat scan with another examiner or after 7 days to confirm. If a fetal pole is seen then measure CRL. If CRL 7 mm there is a high probability of nonviable pregnancy. Repeat scan should be done after 7 days to confirm. Reference: Williams 24/e, p 355
What you can practise in Obstetrical Imaging
13 Obstetrical Imaging MCQs on Normal Pregnancy and Antenatal Care — each with detailed explanations
Previous-year question practice across NEET PG, FMGE, INI-CET and NEET SS
Progress and performance tracking to measure retention
First-trimester dating by crown–rump length and the ultrasound criteria for anembryonic gestation and embryonic death are the core of these Obstetrical Imaging MCQs, distilling early-pregnancy ultrasound into high-yield NEET PG revision.
How many Obstetrical Imaging questions are there, and which exams do they cover?
MedLadder includes 13 curated MCQs for Obstetrical Imaging under OB & G (Normal Pregnancy and Antenatal Care), covering NEET PG, FMGE, INI-CET and NEET SS preparation.
