Image-guided percutaneous biopsy of a 3 cm right hepatic lobe lesion is planned. Compared to CT guidance, the advantage of ultrasound guidance for this procedure is:

• A Better visualisation of calcified lesions
• B Superior lesion detection in obese patients
• C MRI-equivalent soft tissue contrast
• D Real-time needle visualisation with no radiation, lower cost, and portability ✓

Explanation

Ultrasound guidance for percutaneous biopsy provides real-time needle tracking (allowing dynamic needle steering), no ionising radiation, portability (bedside use), and lower cost compared to CT. CT guidance is preferred for lesions not visible on ultrasound (deep retroperitoneal, obese patients, lung lesions), for CT-only visible lesions, and when precise trajectory planning in complex anatomy is required. CT does not provide real-time guidance in the same way as ultrasound.

Reference: Grainger & Allison's Diagnostic Radiology, 7th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.