title: [An approach for safe visualization and localization of catheter during MR-guided intravascular procedures].
abstract: The present paper describes a method for the visualization and localization of a catheter during real-time imaging on a clinical magnetic resonance tomograph (MRT). This method includes the use of an apposite catheter hardware equipped with an optically tunable resonant marker on its tip (OptiMa-Catheter). In the tuned state, the marker produces an intense signal spot in the MR image. The signal is modulated by optical detuning controlled by the MRT system, which results in improved visualization of the catheter tip due to flashing. During real-time imaging, additionally, the localization of the tip is precisely detected and the slice tracking automatically performed. Experiments demonstrate that the OptiMa-Catheter does not generate relevant resonance heating during imaging. Consequently, it combines the visualization and localization known from active techniques with the safety of passive techniques.
authors.affiliation: Philips Forschungslabor, Abteilung Technische Systeme, Hamburg. steffen.weiss@philips.com
authors.forename: Steffen
authors.initials: S
authors.lastname: Weiss
authors.forename: Tobias
authors.initials: T
authors.lastname: Schaeffter
authors.forename: Florian
authors.initials: F
authors.lastname: Brinkert
authors.forename: Titus
authors.initials: T
authors.lastname: Kühne
authors.forename: Arno
authors.initials: A
authors.lastname: Bücker
mesh_terms: D002408:Catheters, Indwelling; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D015203:Reproducibility of Results