Technical success of MRI/CT image fusion was given in all 24 lesions in all 15 patients. Treatment success directly after ablation was 91.6% as full coverage was identified in 22 of 24 lesions. The first follow-up MRI examination showed complete ablation for 22 lesions (91.7%) in 13 patients.
The median target positioning error per ablation probe was 2.9 ± 2.3 mm. Factors influencing ablation site recurrence were lesion size and target positioning error but not location of the lesion.
The success rate wa 97,5% with 1 incomplete ablation. 74% of the interventions were done with biopsy and microwave ablation. No major complications occured. There was a disease progression in 74% of the patients. The median time to progression was 7 months.
The aim of this clinical methodological trial was to establish whether high frequency jet ventilation would give less ventilatory induced liver movements than conventional ventilation, during stereotactic navigated ablation of liver metastases under open surgery
High frequency jet ventilation is a valuable lung ventilation method for patients undergoing stereotactic surgical procedures in general anaesthesia when reduction of organ displacement is crucial