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Abstract #1602

Developments in Endovascular Multi-Mode Coil Design: in vivo Swine Study

Krishna N. Kurpad1, Peng Wang2, Madhav Venkateswaran3, Amish N. Raval4, Orhan Unal2

1Radiology, University of Wisconsin, Madison, WI, United States; 2Medical Physics, University of Wisconsin, Madison, United States; 3Electrical and Computer Engineering, University of Wisconsin, Madison, United States; 4Medicine, University of Wisconsin, Madison, United States

The multi-mode coil, constructed on an endovascular catheter, enables three functionalities, essential for a wholly MR guided intravascular procedure, in a single device that is connected to the MR scanner through a single coaxial cable. These are 1) accurate tracking of the catheter's distal tip 2) detection of the catheter orientation and 3) high sensitivity, limited field of view imaging. In this in vivo swine study, we add a unipolar ablation tip to the distal end of the catheter and demonstrate MR guidance of the multi-mode coil into the left ventricle of the swine heart, where tissue ablation is performed.

Keywords

ablated ablation ablative accurate advanced alone alternatively aorta aortic approvals approved arch arrow artery ascending balloon black brass broad cable capability cardiac carotid catheter channel charring coil coils combined commercial computer conjunction connected connector constructed contact context delivered descending design detailed detection developments device displaying dissected dissecting dissection distal dominant double dynamically electrical electrode enable enables enclosed engineering enhance environment excessive excised external femoral field fiesta firm functionalities functionality generator grant guidance guide guided harvested heart in vivo indicates inset insets inside inspected interfaced introduced length limited loop lumen machined magnet magnified marker medical mode model modified narrow near necessary next onto operation orientation part peak physics picture placed platform position power previous principle profile progress protocol radiology real resolution routed sacrificed scanner sensitivity series slice software solenoid spatial studies submitted superimposed supported swine target third tissue towards tracked tracking unipolar unique updated ventricle ventricular view visualization visualizing wall watts white wire wireless