CT-electromagnetic three-dimensional tracking for renal endovascular sympathetic ablation catheter positioning in an animal model

Daniel R. Ludwig, Prahlad G. Menon, David Schwartzman

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Purpose To examine the feasibility of a computed tomography (CT)-guided renal endoarterial ablation procedure. Materials and Methods Five large (40-60 kg) pigs were studied. Abdominal CT images that were obtained preoperatively were registered to the operative field, and subsequent virtual navigation of a multielectrode ablation catheter within the CT environment was performed. The ablation electrodes were visualized using an impedance technique. Ablation lesions were applied within each artery. Histologic analysis was performed to judge accuracy of the catheter location as portrayed in the virtual image. Results The error between virtual and actual lesion locations along the longitudinal plane of the artery was 3.0 mm ± 2.5 (range, 0-6 mm) in the left renal artery and 3.4 mm ± 2.7 (range, 0-7 mm; P =.7) in the right renal artery. The accuracy of circumferential localization of the electrode was 92% in the right artery and 88% in the left artery. Conclusions These data demonstrate that a CT-guided renal artery ablation procedure is feasible.

Original languageEnglish
Pages (from-to)741-745
Number of pages5
JournalJournal of Vascular and Interventional Radiology
Volume26
Issue number5
DOIs
StatePublished - May 1 2015

Fingerprint

Dive into the research topics of 'CT-electromagnetic three-dimensional tracking for renal endovascular sympathetic ablation catheter positioning in an animal model'. Together they form a unique fingerprint.

Cite this