Journal of vascular and interventional radiology : JVIR
-
J Vasc Interv Radiol · Feb 2006
Comparative StudyReal-time magnetic resonance-guided placement of retrievable inferior vena cava filters: comparison with fluoroscopic guidance with use of in vitro and animal models.
To compare the precision of magnetic resonance (MR)-guided versus fluoroscopy-guided placement of retrievable inferior vena cava (IVC) filters with use of real-time MR imaging strategies optimized for each device in an in vitro model and in an animal model. ⋯ MR-guided placement of retrievable IVC filters is feasible and as accurate as fluoroscopy-guided placement in an in vitro model. With optimized sequences, real-time MR has the potential to develop as a reasonable alternative to fluoroscopy.
-
J Vasc Interv Radiol · Feb 2006
Wall-embedded recovery inferior vena cava filters: imaging features and technique for removal.
Retrievable inferior vena cava (IVC) filters may be removed when no longer needed or left in place as permanent filters. Removal of any of the currently available optionally retrieved IVC filters becomes more difficult when they are tilted. Tilting of an IVC filter can also lead the tip of the filter to become embedded into the wall of the IVC. This report describes a method for removal of the Recovery IVC filter with use of rigid bronchoscopy forceps when the tip of the filter is tilted and embedded in the IVC.
-
J Vasc Interv Radiol · Feb 2006
Multicenter StudyRetrievability of the recovery vena cava filter after dwell times longer than 180 days.
Permanent and optional (retrievable) inferior vena cava (IVC) filters reduce pulmonary embolism (PE) risk. Maximum safe dwell times for retrievable devices have not been defined. This retrospective multicenter analysis evaluated the feasibility of retrieval of the Bard Recovery filter after dwell times longer than 180 days. ⋯ Retrievals of the Recovery filter with dwell times beyond 180 days appear feasible and were performed without complication in this series.
-
J Vasc Interv Radiol · Feb 2006
Comparative StudyComparison of multistation MR angiography with integrated parallel acquisition technique versus conventional technique with a dedicated phased-array coil system in peripheral vascular disease.
To assess the impact of integrated parallel acquisition technique (iPAT) on signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), venous contamination, and overall image interpretability for peripheral magnetic resonance (MR) angiography with use of a dedicated phased-array coil system. ⋯ iPAT MR angiography leads to reduced SNR and CNR in the pelvis and thigh, but this does not affect interpretability of images obtained at these stations. The temporal gain results in significantly increased interpretability as a result of less venous contamination in the calf station. iPAT MR angiography is superior to conventional MR angiography for peripheral imaging.