Minimally invasive cardiac interventions, such as ablation treatment for ventricular tachycardia and therapy delivery involving biologics (cells, genes, biomaterials) for the treatment of myocardial infarction, require a tracking accuracy of <5mm. Our study aimed to characterize the spatial error associated with MR-guided active catheter tracking under static conditions. In a 1.5T MR scanner, we tracked an ablation catheter at 48 different positions, all confined within the boundaries of where a typical human heart would be located. We found that the error was both minimized and maintained below our 5mm target when using a Hadamard multiplexed active tracking sequence.
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