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Spin‐lattice relaxation time measurements using hybrid csi–phantom study
Author(s) -
Hornak Joseph P.,
Smith Aric C.,
Szumowski Jerzy
Publication year - 1990
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.1910130307
Subject(s) - relaxation (psychology) , imaging phantom , spin–lattice relaxation , nuclear magnetic resonance , spin–spin relaxation , t2 relaxation , lattice (music) , chemistry , signal (programming language) , materials science , magnetic resonance imaging , physics , optics , computer science , radiology , medicine , psychology , social psychology , acoustics , nuclear quadrupole resonance , programming language
The spin‐lattice relaxation time T 1 of multicomponent tissues is often determined by fitting relaxation data to monoexponential functions. This process can lead to large errors in the relaxation time. We describe a procedure using chemical‐shift imaging (CSI) which separates the NMR signal into water and lipid components thus allowing the two signals to be individually analyzed for relaxation times. This procedure yields more representative relaxation times than those obtained by both monoexponential and biexponential fitting schemes.