ArticleJournal of magnetic resonance imaging : JMRI2015
Digital subtraction MR angiography roadmapping for magnetic steerable catheter tracking.
Article in Journal of magnetic resonance imaging : JMRI, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- MRI-guided endovascular intervention: current methods and future potential.Expert review of medical devices · 2022Review
- Magnetic Resonance-Guided Passive Catheter Tracking for Endovascular Therapy.Magnetic resonance imaging clinics of North America · 2015Review
Corrections and comments
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Authors and funding
9 authors.
Funding
Abstract
purposeTo develop a high temporal resolution MR imaging technique that could be used with magnetically assisted remote control (MARC) endovascular catheters. MATERIALS AND
methodsA technique is proposed based on selective intra-arterial injections of dilute MR contrast at the beginning of a fluoroscopic MR angiography acquisition. The initial bolus of contrast is used to establish a vascular roadmap upon which MARC catheters can be tracked. The contrast to noise ratio (CNR) of the achieved roadmap was assessed in phantoms and in a swine animal model. The ability of the technique to permit navigation of activated MARC catheters through arterial branch points was evaluated.
resultsThe roadmapping mode proved effective in phantoms for tracking objects and achieved a CNR of 35.7 between the intra- and extra-vascular space. In vivo, the intra-arterial enhancement strategy produced roadmaps with a CNR of 42.0. The artifact produced by MARC catheter activation provided signal enhancement patterns on the roadmap that experienced interventionalists could track through vascular structures.
conclusionA roadmapping approach with intra-arterial contrast-enhanced MR angiography is introduced for navigating the MARC catheter. The technique mitigates the artifact produced by the MARC catheter, greatly limits the required specific absorption rate, permits regular roadmap updates due to the low contrast agent requirements, and proved effective in the in vivo setting. Inc.
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