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T 1 maps from shifted spin echoes and stimulated echoes
Author(s) -
Ropele Stefan,
Bammer Roland,
Stollberger Rudolf,
Fazekas Franz
Publication year - 2001
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.1323
Subject(s) - weighting , multislice , pulse sequence , computer science , data acquisition , spin echo , sequence (biology) , sensitivity (control systems) , pulse (music) , echo (communications protocol) , phase (matter) , algorithm , contrast (vision) , set (abstract data type) , artificial intelligence , physics , nuclear magnetic resonance , optics , acoustics , electronic engineering , magnetic resonance imaging , engineering , chemistry , radiology , programming language , operating system , medicine , computer network , biochemistry , quantum mechanics , detector
A new pulse sequence for fast multislice T 1 mapping is presented. This method is based on calculating T 1 from spin echo (SE) and stimulated echo (STE) images obtained with different degrees of T 1 weighting, and uses the interleaved acquisition scheme of the fast phase acquisition of composite echoes (FastPACE) technique. In contrast to the FastPACE technique, the two echoes are sampled separately. Experimental comparisons confirm that the new sequence layout overcomes most of the FastPACE restrictions, such as its motion sensitivity and the need for a fully complex data set. Moreover, this method offers a higher precision for long T 1 values and a further reduction of acquisition time. Magn Reson Med 46:1242–1245, 2001. © 2001 Wiley‐Liss, Inc.