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Visualization and tracking of an inflatable balloon catheter using SSFP in a flow phantom and in the heart and great vessels of patients
Author(s) -
Miquel Marc E.,
Hegde Sanjeet,
Muthurangu Vivek,
Corcoran Benjamin J.,
Keevil Stephen F.,
Hill Derek L.G.,
Razavi Reza S.
Publication year - 2004
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.20041
Subject(s) - imaging phantom , catheter , inflatable , steady state free precession imaging , balloon , temporal resolution , balloon catheter , visualization , image resolution , biomedical engineering , tracking (education) , flow visualization , medicine , computer science , radiology , flow (mathematics) , computer vision , magnetic resonance imaging , physics , artificial intelligence , surgery , optics , mechanical engineering , psychology , pedagogy , mechanics , engineering
Passive catheter tracking involves direct interaction between the device and its surroundings, creating a local signal loss or enhancement of the image. Using only standard balloon catheters filled with CO 2 and imaged with a steady‐state free precession sequence, it was possible to visualize and passively track catheters in a flow phantom and in the heart and great vessels of 20 patients without any additional image processing. The phantom work demonstrated that it was advantageous to sacrifice spatial resolution in order to increase temporal resolution. Frame rates greater than 10/sec were necessary for ease of catheter manipulation. Although only the tip of the catheter was visualized, this technique proved to be effective in patients undergoing cardiac catheterization. Magn Reson Med 51:988–995, 2004. © 2004 Wiley‐Liss, Inc.