Premium
Undersampled projection reconstruction for active catheter imaging with adaptable temporal resolution and catheter‐only views
Author(s) -
Peters Dana C.,
Lederman Robert J.,
Dick Alexander J.,
Raman Venkatesh K.,
Guttman Michael A.,
Derbyshire J. Andrew,
McVeigh Elliot R.
Publication year - 2003
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.10390
Subject(s) - catheter , projection (relational algebra) , computer science , computer vision , artificial intelligence , medical physics , radiology , medicine , biomedical engineering , algorithm
In this study undersampled projection reconstruction (PR) was used for rapid catheter imaging in the heart, employing steady‐state free precession (SSFP) contrast. Active catheters and phased‐array coils were used for combined imaging of anatomy and catheter position in swine. Real‐time imaging of catheter position was performed with relatively high spatial and temporal resolution, providing 2 × 2 × 8 mm spatial resolution and four to eight frames per second. Two interactive features were introduced. The number of projections (Np) was adjusted interactively to trade off imaging speed and artifact reduction, allowing acquisition of high‐quality or high‐frame‐rate images. Thin‐slice imaging was performed, with interactive requests for thick‐slab projection images of the signal received solely from the active catheter. Briefly toggling on catheter‐only projection images was valuable for verifying that the catheter tip was contained within the selected slice, or for locating the catheter when part of it was outside the selected slice. Magn Reson Med 49:216–222, 2003. Published 2003 Wiley‐Liss, Inc.