A method for fast 3D tracking using tuned fiducial markers and a limited projection reconstruction FISP (LPR-FISP) sequence.

@article{citeulike:2783195, abstract = {This work demonstrates the feasibility of using wireless, tuned fiducial markers with a limited projection reconstruction-fast imaging with steady-state free precession sequence (LPR-FISP) to accurately obtain tracking information necessary for interactive scan plane selection in magnetic resonance imaging (MRI). The position and orientation of a rigid interventional device can be uniquely determined from the 3D coordinates of three fiducial markers mounted in a known configuration on the device. Three fiducial markers were tuned to the proton resonant frequency in a 0.2T open MR scanner and mounted to the surface of a cylindrical water phantom. An LPR-FISP sequence was developed to suppress the water phantom signal while preserving that of the fiducial markers through a nonselective low-tip-angle excitation and a dephaser gradient applied prior to data acquisition. A localization algorithm was developed to accurately calculate the 3D coordinates of the fiducial markers using four LPR-FISP projections in two orthogonal scan planes. The sequence repetition time (TR = 21 msec) and the limited projection set resulted in fast LPR-FISP coordinate acquisition times of approximately 170 msec with an accuracy (max error) of 3 mm on a 0.2T MR system. This fast, accurate tracking method provides the fundamental technology for interactive MRI scan plane definition for rigid interventional devices without the need for stereotactic cameras or reference frames.}, address = {Case Western Reserve University, University Hospital of Cleveland, Department of Radiology, Cleveland, Ohio 44106, USA.}, author = {Flask, C. and Elgort, D. and Wong, E. and Shankaranarayanan, A. and Lewin, J. and Wendt, M. and Duerk, J. L. }, citeulike-article-id = {2783195}, issn = {1053-1807}, journal = {Journal of magnetic resonance imaging : JMRI}, keywords = {fiducial, markers, mri, tracking}, month = {November}, number = {5}, pages = {617--627}, posted-at = {2008-05-10 20:34:38}, priority = {2}, title = {A method for fast 3D tracking using tuned fiducial markers and a limited projection reconstruction FISP (LPR-FISP) sequence.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/11747015}, volume = {14}, year = {2001} }

TY - JOUR ID - citeulike:2783195 L3 - citeulike-article-id:2783195 TI - A method for fast 3D tracking using tuned fiducial markers and a limited projection reconstruction FISP (LPR-FISP) sequence. JF - Journal of magnetic resonance imaging : JMRI VL - 14 IS - 5 SP - 617 EP - 627 AD - Case Western Reserve University, University Hospital of Cleveland, Department of Radiology, Cleveland, Ohio 44106, USA. SN - 1053-1807 N2 - This work demonstrates the feasibility of using wireless, tuned fiducial markers with a limited projection reconstruction-fast imaging with steady-state free precession sequence (LPR-FISP) to accurately obtain tracking information necessary for interactive scan plane selection in magnetic resonance imaging (MRI). The position and orientation of a rigid interventional device can be uniquely determined from the 3D coordinates of three fiducial markers mounted in a known configuration on the device. Three fiducial markers were tuned to the proton resonant frequency in a 0.2T open MR scanner and mounted to the surface of a cylindrical water phantom. An LPR-FISP sequence was developed to suppress the water phantom signal while preserving that of the fiducial markers through a nonselective low-tip-angle excitation and a dephaser gradient applied prior to data acquisition. A localization algorithm was developed to accurately calculate the 3D coordinates of the fiducial markers using four LPR-FISP projections in two orthogonal scan planes. The sequence repetition time (TR = 21 msec) and the limited projection set resulted in fast LPR-FISP coordinate acquisition times of approximately 170 msec with an accuracy (max error) of 3 mm on a 0.2T MR system. This fast, accurate tracking method provides the fundamental technology for interactive MRI scan plane definition for rigid interventional devices without the need for stereotactic cameras or reference frames. KW - fiducial KW - markers KW - mri KW - tracking AU - Flask, C AU - Elgort, D AU - Wong, E AU - Shankaranarayanan, A AU - Lewin, J AU - Wendt, M AU - Duerk, JL PY - 2001/11// UR - http://view.ncbi.nlm.nih.gov/pubmed/11747015 ER -