Akademik Veri Yönetim Sistemi
European Conference on Interventional Oncology, Rotterdam, Hollanda, 13 - 16 Nisan 2025, ss.118, (Özet Bildiri)
Purpose:
Anti-phase technology, a novel advancement in microwave antennas for percutaneous liver ablations, forms
more spherical ablation zones. This study aimed to evaluate the efficacy and safety of microwave ablation
(MWA) treatment for liver tumors using a microwave antenna equipped with anti-phase technology.
Material and methods:
The study included 92 patients (133 lesions) treated with MWA for hepatocellular carcinoma (HCC) or liver
metastases. Of these, nine patients had HCC, and 83 had metastases (46 colorectal and 37 non-colorectal
metastases). Retrospective analysis was conducted on patients’ age, sex, pre- and post-procedural laboratory
values (white blood cell count, neutrophil-to-lymphocyte ratio), tumor dimensions (pre-procedure and postprocedure
day 1 and months 1, 3, and 6), details of the MWA procedure (duration, power output), procedurerelated
complications, and local progression/recurrence during follow-up.
Results:
The technical success rate of MWA was 100%. Ablations were performed at a median power output of 80
watts (range: 50–100), and the mean ablation duration was 5.2±2.1 minutes. Follow-up imaging revealed an
ablation zone diameter-to-tumor diameter ratio of 1.63±0.3. Major complications occurred in three patients
(3.2%). Minor complications were observed in 29 patients (31.5%). The median disease-free survival time was
25 months (95% confidence interval: 21–27). Tumor size was identified as an independent risk factor for local
progression (p=0.012).
Conclusion:
This study represents the longest follow-up duration and the largest patient cohort for the MWA treatment of
liver tumors using anti-phase technology. The