Publikationsdatenbank

Immediate post-interventional contrast-enhanced computed tomography overestimates hepatic microwave ablation:
an in vivo animal study (2020)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Poch, Franz G.

Geyer, Beatrice

Gemeinhardt, Ole

Klopfleisch, Robert (WE 12)

Niehues, Stefan M.

Vahldiek, Janis L.

Bressem, Keno

Kreis, Martin E.

Lehmann, Kai S.

Quelle

International journal of hyperthermia

Bandzählung: 37

Heftzählung: 1

Seiten: 463 – 469

ISSN: 1464-5157

Sprache

Englisch

Verweise

URL (Volltext): https://www.tandfonline.com/doi/full/10.1080/02656736.2020.1762936

DOI: 10.1080/02656736.2020.1762936

Pubmed: 32396401

Kontakt

Institut für Tierpathologie

Robert-von-Ostertag-Str. 15
14163 Berlin
+49 30 838 62450
pathologie@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Objectives:
Contrast-enhanced computed tomography (CECT) is used to monitor technical success immediately after hepatic microwave ablation (MWA). However, it remains unclear, if CECT shows the exact extend of the thermal destruction zone, or if tissue changes such as peri-lesionary edema are depicted as well. The objective of this study was to correlate immediate post-interventional CECT with histological and macroscopic findings in hepatic MWA in porcine liver in vivo.

Methods:
Eleven MWA were performed in porcine liver in vivo with a microwave generator (928 MHz; energy input 24 kJ). CECT was performed post-interventionally. Livers were explanted and ablations were bisected immediately after ablation. Samples were histologically analyzed after vital staining (NADH-diaphorase). Ablation zones were histologically and macroscopically outlined. We correlated histologic findings, macroscopic images and CECT.

Results:
Three ablation zones were identified in histological and macroscopic findings. Only one ablation zone could be depicted in CECT. Close conformity was observed between histological and macroscopic findings. The ablation zone depicted in CECT overestimated the histological avital central zone and inner red zone (p < = .01). No differences were found between CECT and the histological outer red zone (p > .05).

Conclusions:
Immediate post-interventional CECT overestimated the clinically relevant zone of complete cell ablation after MWA in porcine liver in vivo. This entails the risk of incomplete tumor ablation and could lead to tumor recurrence.