Radiology Parameters used to estimate gestational age in last trimester – a) CR lengthb) Abdominal circumferencec) BPDd) Femur length A abc B acd C ac D bcd 💡 Explanation Parameters used to estimate gestational age in last trimester – a) CR lengthb) Abdominal circumferencec) BPDd) Femur length ✓ Correct Answer: D. bcd