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MRI-Guided Vascular Access with an Active Visualization Needle
- Publication Year :
- 2011
-
Abstract
- To develop an approach to vascular access under magnetic resonance imaging (MRI), as a component of comprehensive MRI-guided cardiovascular catheterization and intervention.We attempted jugular vein access in healthy pigs as a model of "difficult" vascular access. Procedures were performed under real-time MRI guidance using reduced field of view imaging. We developed an "active" MRI antenna-needle having an open-lumen, distinct tip appearance and indicators of depth and trajectory in order to enhance MRI visibility during the procedure. We compared performance of the active needle against an unmodified commercial passively visualized needle, measured by procedure success among operators with different levels of experience.MRI-guided central vein access was feasible using both the active needle and the unmodified passive needle. The active needle required less time (88 vs. 244 sec, P = 0.022) and fewer needle passes (4.5 vs. 9.1, P = 0.028), irrespective of operator experience.MRI-guided access to central veins is feasible in our animal model. When image guidance is necessary for vascular access, performing this component under MRI will allow wholly MRI-guided catheterization procedures that do not require adjunctive imaging facilities such as x-ray or ultrasound. The active needle design showed enhanced visibility, as expected. These capabilities may permit more complex catheter-based cardiovascular interventional procedures enabled by enhanced image guidance.
- Subjects :
- Diagnostic Imaging
medicine.medical_specialty
Catheterization, Central Venous
Interventional magnetic resonance imaging
Swine
Vascular access
Cardiology
Article
Catheterization
Medical imaging
Medicine
Animals
Radiology, Nuclear Medicine and imaging
medicine.diagnostic_test
business.industry
Angiography
Reproducibility of Results
Magnetic resonance imaging
Equipment Design
Magnetic Resonance Imaging
Visualization
Needles
Radiology
Clinical Competence
Clinical competence
Jugular Veins
business
Mri guided
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....91a363a462736d8719e91f9008dba6e8