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Fast T 1 mapping on a whole‐body scanner
Author(s) -
Deichmann R.,
Hahn D.,
Haase A.
Publication year - 1999
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/(sici)1522-2594(199907)42:1<206::aid-mrm28>3.0.co;2-q
Subject(s) - scanner , computer science , segmentation , snapshot (computer storage) , inversion (geology) , computer vision , algorithm , nuclear magnetic resonance , artificial intelligence , physics , paleontology , structural basin , operating system , biology
Abstract A method for the fast acquisition of quantitative T 1 maps is presented. It is based on the acquisition of a series of snapshot fast low‐angle shot (FLASH) images after inversion of the magnetization. A drawback of this method is the necessity for a sufficiently long relaxation delay before each inversion pulse, leading to long experimental times if averaging or segmentation is required. Thus implementation of this method on a whole‐body scanner is problematic, as the longer gradient rise times provide prolonged repetition times, which makes segmentation indispensable to provide a sufficient temporal resolution. We present a modification of the method that allows for reduction in the intermediate relaxation delays and thus for considerably reduced experimental durations. Magn Reson Med 42:206–209, 1999. © 1999 Wiley‐Liss, Inc.