title: Reverse polarized inductive coupling to transmit and receive radiofrequency coil arrays.
abstract: In this study, the reverse polarization method is implemented using transmit and receive arrays to improve the visibility of the interventional devices. Linearly polarized signal sources--inductively and receptively coupled radiofrequency coils--are used in the experimental setups to demonstrate the ability of the method to separate these sources from a forward polarized anatomy signal. Two different applications of the reverse polarization method are presented here: (a) catheter tracking and (b) fiducial marker visualization, in both of which transmit and receive arrays are used. The performance of the reverse polarization method was further tested with phantom and volunteer studies, and the results proved the feasibility of this method with transmit and receive arrays.
authors.affiliation: National Research Center for Magnetic Resonance (UMRAM), Bilkent University, Ankara, Turkey.
authors.forename: Haydar
authors.initials: H
authors.lastname: Celik
authors.forename: Ergin
authors.initials: E
authors.lastname: Atalar
mesh_terms: D000465:Algorithms; D002404:Catheterization; D004867:Equipment Design; D005240:Feasibility Studies; D057918:Fiducial Markers; D006257:Head / Q000033:anatomy & histology; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation* / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000295:instrumentation* / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods*; D053783:Magnetic Resonance Imaging, Interventional / Q000295:instrumentation* / Q000379:methods*; D019047:Phantoms, Imaging; D012680:Sensitivity and Specificity; D012985:Software Design