On the heating of small inductively coupled RF coils mounted on an intravascular model catheter during MR imaging
نویسندگان
چکیده
Introduction/Purpose Small inductively coupled RF coils have already been suggested or used as MR reference markers for various purposes, for example automatic patient registration, stereotactic planning, and visualization of devices inside the magnet [1-4]. Such markers may also be suitable for the guidance of intravascular devices (catheters) because they require no electrical connection to the scanner. On the downside, inductive coupling of these devices may lead to a considerable heating during RF-intense MR imaging which may pose a safety hazard [3,4]. Therefore, the goal of this work was to assess the heating behavior of a catheter-mounted, semi-active marker design under various experimental conditions in a vessel phantom.
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