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Published on: April 26, 2024
CT fluoroscopy-guided placement of inferior vena cava filters: feasibility study in pigs
Andreas H Mahnken1, Tobias Penzkofer, Peter Isfort
1Department of Diagnostic and Interventional Radiology, University Hospital Aachen, Aachen, Germany. andreas.mahnken@rwth-aachen.de
Purpose:
To evaluate the feasibility of computed tomography (CT)-guided placement of inferior vena cava (IVC) filters in a swine model.
Materials And Methods:
Five domestic pigs (60-70 kg) underwent transfemoral and transjugular IVC filter placement under real-time CT fluoroscopic guidance. Filter position was confirmed by contrast-enhanced CT and digital subtraction angiography. Filter tilt, distance to target position, and fluoroscopy time were analyzed.
Results:
A total of 10 filters were successfully implanted (five via transfemoral approach, five via transjugular approach) without complications. The mean distance to the target position was 0.3 cm ± 0.2. Mean filter tilt was 3.2° ± 2.3 (range, 0°-7°), without differences between deployment techniques (P = .8486). Average fluoroscopy time was 25.9 s ± 6.9 per procedure.
Conclusions:
CT fluoroscopy-guided placement of IVC filters is safely feasible. Use of this technique may avoid the need to move critically ill patients.
