SIR ePoster Library

Final ID
564

Type
Original Scientific Research-Oral or Pos

Authors
S Haque¹, W Pabon-Ramos², M Miller², D Sopko², P Suhocki², T Smith², C Kim²

Institutions
¹University of Missouri, Kansas City, MO, ²Duke University Medical Center, Durham, NC

Purpose
To compare filter tilt angle and tilt orientation of Denali and Celect optional inferior vena cava (IVC) filters immediately after placement using cone-beam computed tomography (CT).

Materials & Methods
Between June 2013 and April 2015, patients scheduled for optional IVC filter placement were prospectively enrolled. Immediately after infrarenal IVC filter placement, cone-beam CT was obtained. Lateral and anteroposterior filter tilt angles (degrees) and tilt orientations (right vs left, anterior vs posterior) were determined using coronal and sagittal cone-beam CT reconstructions, respectively.

Results
A total of 34 patients (mean age, 62 y; 56% women) were enrolled (23 Celect, 11 Denali). There was a significant difference in lateral tilt angles between Celect (mean 4.5 degrees, 95% CI 3.4-5.6) and Denali filters (mean 2.4 degrees, 95% CI 1.4-3.4)(p=0.005), and in anteroposterior tilt angles between Celect (mean 4.4 degrees, 95% CI 2.8-5.9) and Denali filters (mean 1.7 degrees, 95% CI 0.8-2.5) (p=0.005). There was no significant difference in lateral tilt orientations between Celect (15 left, 8 right) and Denali filters (7 left, 3 right, 1 no lateral tilt) (p=1.0), or in anteroposterior tilt orientations between Celect (16 anterior, 7 posterior) and Denali filters (7 anterior, 4 posterior) (p=1.0).

Conclusions
Celect filters tilt to a greater degree than Denali filters, but not in any particular orientation.