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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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Hauptverfasser: Sommer, Christof-Matthias (VerfasserIn) , Arnegger, Florian (VerfasserIn) , Koch, Vitali (VerfasserIn) , Pap, Bence (VerfasserIn) , Holzschuh, Maria (VerfasserIn) , Bellemann, Nadine (VerfasserIn) , Gehrig, Tobias (VerfasserIn) , Senft, Jonas (VerfasserIn) , Nickel, Felix (VerfasserIn) , Mogler, Carolin (VerfasserIn) , Meinzer, Hans-Peter (VerfasserIn) , Stampfl, Ulrike (VerfasserIn) , Kauczor, Hans-Ulrich (VerfasserIn) , Radeleff, Boris (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2012
In: CardioVascular and interventional radiology
Year: 2011, Jahrgang: 35, Heft: 3, Pages: 653-660
ISSN:1432-086X
DOI:10.1007/s00270-011-0171-5
Online-Zugang: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
Volltext
Verfasserangaben: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
Beschreibung
Zusammenfassung: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.
Beschreibung:First Online: 12 May 2011
Gesehen am 24.07.2018
Beschreibung:Online Resource
ISSN:1432-086X
DOI:10.1007/s00270-011-0171-5

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