CBCT Arteriography-Guided MWA for Ultrasound-Invisible Liver Lesions Achieves High Technical Success

Cone-beam CT hepatic arteriography-guided microwave ablation achieved 89% technical success (41/46) in liver lesions unseen on ultrasound, with 4.9% local progression after 11.9-month median follow-up and no major complications.

• Targets were small (median size 11.5 mm) and comprised mainly HCC (74%) and colorectal cancer metastases (26%).
• Dual-phase cone-beam CT arteriography allowed lesion visualization, antenna trajectory planning, and post-ablation margin assessment.
• No major complications occurred, and the local tumor progression rate was 4.9% at a median follow-up of 11.9 months.

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