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Analysis of subtraction methods in three‐dimensional contrast‐enhanced peripheral MR angiography
Author(s) -
Huang Yuexi,
Webster Christie A.,
Wright Graham A.
Publication year - 2002
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.10100
Subject(s) - subtraction , maximum intensity projection , contrast (vision) , background subtraction , projection (relational algebra) , image quality , image subtraction , digital subtraction angiography , computer science , magnetic resonance imaging , radiology , angiography , artificial intelligence , medicine , mathematics , algorithm , image processing , image (mathematics) , pixel , binary image , arithmetic
Purpose To compare the effectiveness of three image subtraction algorithms designed to improve arterial conspicuity in first‐pass contrast‐enhanced magnetic resonance (MR) angiography. Materials and Methods Three subtraction methods were analyzed through computer simulations, phantom studies, and clinical studies. These algorithms were: complex subtraction, magnitude subtraction, and maximum intensity projection subtraction. Results In high resolution three‐dimensional imaging, maximum intensity projection subtraction generally yields the best background suppression. Complex subtraction is effective in reducing partial volume effects in low resolution imaging. Magnitude subtraction works better in high resolution, low contrast concentration protocols. Conclusion Choosing the appropriate subtraction method according to the protocol is helpful in optimizing image quality. J. Magn. Reson. Imaging 2002;15:541–550. © 2002 Wiley‐Liss, Inc.