Our chosen protocol consists of arterial, portal venous (not shown) and delayed (not shown) volumes through the liver. Microwave needle placement is carried out with fluoroscopic assistance, using low dose 4mm slices with no overlap.
In this particular case, a 17Ga x 6.8cm long coaxial system was placed to allow sampling of the lesion using a 18Ga x 10cm long Argon Biopince device. The lesion was then ablated effectively with two ablation cycles, deep and superficial, at 120W for two minutes, using a Solero Angiodynamics machine (operating frequency 2.45GHz).
Selected images demonstrate the lesion being traversed by the biopsy device, and the microwave needle (15Ga x 19cm long) within the index observation. The following post-ablation arterial phase shows the original fatty lesion surrounded by an adequate ablation zone with florid hyperaemia; satisfactory coverage is confirmed with a 'volume matching' reconstruction, by superimposing pre- and post-ablation volumes (final selected image).
Small amount of haemoperitoneum after ablation, of no clinical consequence. Note also made of cholelithiasis.