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Updated: May 13, 2026
07:16
Thermal Ablation for the Treatment of Abdominal Tumors
Published on: March 7, 2011
Microwave ablation using 915-MHz and 2.45-GHz systems: what are the differences?
Kerri A Simo1, Victor B Tsirline, David Sindram
1Section of Hepatobiliary and Pancreas Surgery, Carolinas Medical Center, Charlotte, NC, USA.
Summary
The 2.45-GHz microwave ablation (MWA) system offers faster and more predictable hepatic tumour ablation compared to the 915-MHz system. Both systems achieve reproducible results, but the 2.45-GHz MWA system is more efficient.
Area of Science:
- Hepatobiliary Surgery
- Minimally Invasive Procedures
- Radiofrequency Ablation Technologies
Background:
- Microwave ablation (MWA) is a key technique for treating hepatic tumours.
- Comparing different MWA frequencies is crucial for optimizing treatment efficacy.
- Understanding system differences aids in selecting the most effective MWA technology.
Purpose of the Study:
- To evaluate and compare the performance of 915-MHz and 2.45-GHz MWA systems.
- To assess differences in ablation characteristics for hepatic tumours.
- To determine the efficiency and predictability of each MWA frequency.
Main Methods:
- Retrospective analysis of 48 patients undergoing hepatic tumour MWA.
- Comparison of outcomes between 915-MHz and 2.45-GHz MWA systems.
- Analysis of tumour size, ablation time, energy application, and correlation coefficients.
Main Results:
- The 2.45-GHz system achieved faster ablation times per burn and per lesion.
- Tumour size showed a stronger correlation with ablation time for the 2.45-GHz system.
- The 915-MHz system required greater total energy per lesion and per cm ablated.
Conclusions:
- Both 915-MHz and 2.45-GHz MWA systems provide reproducible hepatic tumour ablation.
- The 2.45-GHz system offers more predictable and faster ablations.
- The 2.45-GHz system demonstrates superior efficiency, particularly with a single antenna.
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