Patent ID: 7885704
Filing Date: 2011-02-08
Classification: A61B,G01R

Abstract:
1. An intracavity probe for use with a magnetic resonance (MR) system for obtaining images or spectra of a region of interest within a cavity of a patient, said intracavity probe comprising: (a) a first coil loop for receiving MR signals from the region of interest, said first coil loop having a plurality of capacitors therein, said plurality of capacitors including (i) a first drive capacitor and a second drive capacitor of approximately equal value serially connected within said first coil loop and at a junction node thereof forming a virtual ground for electrically balancing and impedance matching said first coil loop and (ii) a tuning capacitor serially connected within said first coil loop diametrically opposite said junction node of said drive capacitors and having a value selected to resonate said first coil loop at an operating frequency of said MR system; (b) a first output cable connected at one end thereof across said first drive capacitor; and (c) a second output cable connected at one end thereof across said second drive capacitor; wherein said first and said second output cables (i) each have an electrical length of S