Microwave ablation of porcine kidneys in vivo

• Verfasst von: Sommer, Christof-Matthias [VerfasserIn]
• Verfasst von: Arnegger, Florian [VerfasserIn]
• Verfasst von: Koch, Vitali [VerfasserIn]
• Verfasst von: Pap, Bence [VerfasserIn]
• Verfasst von: Holzschuh, Maria [VerfasserIn]
• Verfasst von: Bellemann, Nadine [VerfasserIn]
• Verfasst von: Gehrig, Tobias [VerfasserIn]
• Verfasst von: Senft, Jonas [VerfasserIn]
• Verfasst von: Nickel, Felix [VerfasserIn]
• Verfasst von: Mogler, Carolin [VerfasserIn]
• Verfasst von: Meinzer, Hans-Peter [VerfasserIn]
• Verfasst von: Stampfl, Ulrike [VerfasserIn]
• Verfasst von: Kauczor, Hans-Ulrich [VerfasserIn]
• Verfasst von: Radeleff, Boris [VerfasserIn]
• Titel: Microwave ablation of porcine kidneys in vivo
• Titelzusatz: effect of two different ablation modes (“temperature control” and “power control”) on procedural outcome
• Verf.angabe: 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
• Jahr: 2012
• Jahr des Originals: 2011
• Umfang: 8 S.
• Fussnoten: First Online: 12 May 2011 ; Gesehen am 24.07.2018
• Titel Quelle: Enthalten in: CardioVascular and interventional radiology
• Ort Quelle: Berlin : Springer, 1978
• Jahr Quelle: 2012
• Band/Heft Quelle: 35(2012), 3, Seite 653-660
• ISSN Quelle: 1432-086X
• DOI: doi:10.1007/s00270-011-0171-5
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 157788602X

Abstract

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.