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Rapid tip tracking with MRI by a limited projection reconstruction technique
Author(s) -
Shimizu Kenji,
Mulkern Robert V.,
Oshio Koichi,
Panych Lawrence P.,
Yoo SeungSchik,
Jolesz Ferenc A.,
Kikinis Ron
Publication year - 1998
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880080145
Subject(s) - imaging phantom , track (disk drive) , computer science , tracking (education) , fast spin echo , projection (relational algebra) , computer vision , artificial intelligence , back projection , magnetic resonance imaging , biomedical engineering , physics , optics , radiology , algorithm , medicine , psychology , pedagogy , operating system
To rapidly track invasive devices within MRI systems, a novel approach using a limited projection reconstruction technique is presented. Our method exploits the difference between images reconstructed from a limited number of projections and serves to depict the tip of a needle during its advancement. This method was implemented on a standard MRI system with a radial fast‐spin‐echo sequence and examined in phantom studies. We demonstrated that the proposed method could track the tip every 300 msec and the tip depicted by the present technique was consistently displaced along the needle by a small distance (5 mm).