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Temperature mapping using the water proton chemical shift: Self‐referenced method with echo‐planar spectroscopic imaging
Author(s) -
Kuroda K.,
Mulkern R.V.,
Oshio K.,
Panych L.P.,
Nakai T.,
Moriya T.,
Okuda S.,
Hynynen K.,
Joles F.A.
Publication year - 2000
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(200002)43:2<220::aid-mrm8>3.0.co;2-9
Subject(s) - nuclear magnetic resonance , echo planar imaging , planar , signal (programming language) , echo (communications protocol) , magnetic resonance imaging , phase (matter) , materials science , proton , echo time , chemistry , analytical chemistry (journal) , physics , computer science , medicine , computer network , computer graphics (images) , organic chemistry , chromatography , quantum mechanics , radiology , programming language
An echo‐planar spectroscopic imaging method of temperature mapping is proposed. This method is sufficiently faster than the so‐called 3D magnetic resonance spectroscopic imaging (3D‐MRSI) method and does not require image subtractions, unlike the conventional phase mapping method when an internal reference signal is detectable. The water proton chemical shift measured by using the tissue lipid as an internal reference clearly visualized the temperature change in a porcine liver sample in vitro. It was also demonstrated that the internally referenced echo‐planar spectroscopic imaging method could markedly reduce a temperature error caused by a simple, translational motion between scans compared with the phase‐mapping method. Magn Reson Med 43:220–225, 2000. © 2000 Wiley‐Liss, Inc.