Patent ID: 7596402
Filing Date: 2009-09-29
Classification: G01R

Abstract:
1. A method, comprising: applying a FLASH magnetic resonance (MR) pulse sequence to a body in which a wireless magnetic resonance imaging (MRI) tracking probe is inserted, where the FLASH MR pulse sequence excites a first signal source adjacent to the wireless MRI tracking probe, the first signal source having a first MR excitation frequency, the first signal source being associated with the body in which the wireless MRI tracking probe is associated; applying a CHESS MR pulse sequence to a region in the body in which the wireless MRI tracking probe is inserted, where the CHESS MR pulse sequence excites a second signal source having a second MR excitation frequency, the second signal source being associated with the MRI tracking probe; acquiring a first image, where the first image is of a portion of the body in which the wireless MRI tracking probe is inserted, the first image being based on RF signals associated with the first signal source; acquiring a second image, where the second image is of at least a portion of the wireless MRI tracking probe, the second image being based on RF signals associated with the second signal source; and selectively tracking the MRI tracking probe by alternating between displaying the first image and the second image on a display; wherein the second signal source being one of, the MRI tracking probe, and a material located in the MRI tracking probe; and wherein the MRI tracking probe being manufactured, at least in part, from PTFE, and where the method includes controlling the CHESS MR pulse sequence to excite PTFE.