Skip to main content
main-content

01.07.2014 | Laryngology | Ausgabe 7/2014

European Archives of Oto-Rhino-Laryngology 7/2014

Using temperature–time integration as a critical parameter in using monopolar radiofrequency ablations

Zeitschrift:
European Archives of Oto-Rhino-Laryngology > Ausgabe 7/2014
Autoren:
Yen-Liang Chang, Te-Ming Tseng, Po-Yueh Chen, Chun-Ju Lin, Shih-Han Hung

Abstract

It is generally believed that radiofrequency energy delivered to the tissue determines the RFA lesion size. The purpose of this study was to re-evaluate this relationship and propose a potentially parameter of temperature–time integration as a better indicator of RFA lesion size. Using an Ex Vivo lesioning model, fixed 300 J RFA lesions were created under target temperature settings of 65, 75, and 85 °C. The lesion sizes were recorded and compared. Under the target temperature of 65 and 75 °C, the RFA procedures were sustained for a period of time after reaching the target temperature. The correlation between the lesion size and the sustained time (Ts) after reaching the target temperature was calculated. Under the same amount of energy output (300 J), the lesion size created under the three different target temperatures (65, 75, and 85 °C) differs significantly. When the target temperature was set to 75 °C, the correlation coefficient between the Ts and the lesion area and the maximal effective radius (Mer) were 0.913 and 0.971, respectively. When the target temperature was set to 65 °C, the correlation coefficient between the Ts and the lesion area and the Mer were 0.962 and 0.923, respectively. The RFA lesion size is not proportional to the total delivered energy. The Temperature–time integration appears to be a much better indicator that critically influences the lesion size.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de. Zusätzlich können Sie eine Zeitschrift Ihrer Wahl in gedruckter Form beziehen – ohne Aufpreis.

Weitere Produktempfehlungen anzeigen
Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 7/2014

European Archives of Oto-Rhino-Laryngology 7/2014 Zur Ausgabe
  1. Sie können e.Med HNO 14 Tage kostenlos testen (keine Print-Zeitschrift enthalten). Der Test läuft automatisch und formlos aus. Es kann nur einmal getestet werden.

Neu im Fachgebiet HNO

Mail Icon II Newsletter

Bestellen Sie unseren kostenlosen Newsletter Update HNO und bleiben Sie gut informiert – ganz bequem per eMail.

Bildnachweise