Radiology Frequency of sound waves used for transabdominal ultrasonography is A 2.5-3.5 MHz B 3.5-5.0 MHz C 5.0-7.5 MHz D 7.5-10 MHz 💡 Explanation Frequency of sound waves used for transabdominal ultrasonography is ✓ Correct Answer: B. 3.5-5.0 MHz