Microwave ablation of porcine kidneys in vivo: effect of two different ablation modes (“temperature control” and “power control”) on procedural outcome
Purpose: This study was designed to analyze the effect of two different ablation modes (“temperature control” and “power control”) of a microwave system on procedural outcome in porcine kidneys in vivo. Methods: A commercially available microwave system (Avecure Microwave Generator; MedWaves, San Di...
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2012
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| In: |
CardioVascular and interventional radiology
Year: 2011, Volume: 35, Issue: 3, Pages: 653-660 |
| ISSN: | 1432-086X |
| DOI: | 10.1007/s00270-011-0171-5 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1007/s00270-011-0171-5 Verlag, Volltext: https://link.springer.com/article/10.1007/s00270-011-0171-5 
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| Author Notes: | C.M. Sommer, F. Arnegger, V. Koch, B. Pap, M. Holzschuh, N. Bellemann, T. Gehrig, J. Senft, F. Nickel, C. Mogler, S. Zelzer, H.P. Meinzer, U. Stampfl, H.U. Kauczor, B.A. Radeleff |
| Summary: | Purpose: This study was designed to analyze the effect of two different ablation modes (“temperature control” and “power control”) of a microwave system on procedural outcome in porcine kidneys in vivo. Methods: A commercially available microwave system (Avecure Microwave Generator; MedWaves, San Diego, CA) was used. The system offers the possibility to ablate with two different ablation modes: temperature control and power control. Thirty-two microwave ablations were performed in 16 kidneys of 8 pigs. In each animal, one kidney was ablated twice by applying temperature control (ablation duration set point at 60 s, ablation temperature set point at 96°C, automatic power set point; group I). The other kidney was ablated twice by applying power control (ablation duration set point at 60 s, ablation temperature set point at 96°C, ablation power set point at 24 W; group II). Procedural outcome was analyzed: (1) technical success (e.g., system failures, duration of the ablation cycle), and (2) ablation geometry (e.g., long axis diameter, short axis diameter, and circularity). Results: System failures occurred in 0% in group I and 13% in group II. Duration of the ablation cycle was 60 ± 0 s in group I and 102 ± 21 s in group II. Long axis diameter was 20.3 ± 4.6 mm in group I and 19.8 ± 3.5 mm in group II (not significant (NS)). Short axis diameter was 10.3 ± 2 mm in group I and 10.5 ± 2.4 mm in group II (NS). Circularity was 0.5 ± 0.1 in group I and 0.5 ± 0.1 in group II (NS). Conclusions: Microwave ablations performed with temperature control showed fewer system failures and were finished faster. Both ablation modes demonstrated no significant differences with respect to ablation geometry. |
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| Item Description: | First Online: 12 May 2011 Gesehen am 24.07.2018 |
| Physical Description: | Online Resource |
| ISSN: | 1432-086X |
| DOI: | 10.1007/s00270-011-0171-5 |