Meeting Banner
Abstract #2945

Passive Catheter Tracking with a Controllable Susceptibility Effect

SUMMA25William Dominguez-Viqueira1, Hirad Karimi2, Charles H. Cunningham1, 2

1Imaging, Sunnybrook Research Institute, Toronto, Ontario, Canada; 2Dept. of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada

Susceptibility artifactbased tracking using paramagnetic markers is been used for guiding endovascular interventions in MRI, but with limited enthusiasm partly because of the image degradation that results from such devices. Recently, a susceptibility-based tracking device which can be mechanically turned ON and OFF was proposed. In this work, the device was re-computed for a three-layer design with widely available materials, scaled down to 3mm (9F) diameter and attached to a catheter to show feasibility with real-time images. The difference between the aligned and miss-aligned configurations was large in the MRI images, showing the feasibility of tracking the device.

Keywords

acrylic adjacent ages aligned anatomic arbitrary around attached axial axis balance bath biophysics bright catheter charge coil completely component components computed continuous contrast copper cost cylinder cylinders demon dept design designed device diamagnetic diameter diameters dimensions disabled doped economical either electrical ends enthusiasm fabricated facilitates fast feasibility field fields final fixed front function future giving global glued gluing grade gradient graphite guiding health held implemented in vivo inch inside institute institutes interventions introducer iteration layer length locating mark marker materials measuring mechanically mesh minimized minutes miss mode motor negative nested opposite optimization outer outside paramagnetic parts passive periodically phantom picture pieces position positive projection proposed prototype pulled pulling pulse radio real receive recently representative respectively rewinder rich scaled scanner selected setup simulation slice slide sliding spanned sulfate surface susceptibilities susceptibility synchronized systematically thicknesses titanium tool track tracking turned wall water ween white widely width wing wire