Premium
Low‐temperature polarized helium‐3 for MRI applications
Author(s) -
Kober Frank,
Wolf PierreÉtienne,
Leviel JeanLouis,
Vermeulen Gérard,
Duhamel Guillaume,
Delon Antoine,
Derouard Jacques,
Décorps Michel,
Ziegler Anne
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(199906)41:6<1084::aid-mrm2>3.0.co;2-4
Subject(s) - rubidium , nuclear magnetic resonance , relaxation (psychology) , magnet , liquid helium , coating , helium , materials science , chemistry , nuclear magnetic resonance spectroscopy , atomic physics , physics , nanotechnology , potassium , psychology , social psychology , quantum mechanics , metallurgy
Abstract The first 3 He nuclear magnetic resonance (NMR) experiments using low‐temperature prepolarization are presented. 3 He cells were polarized at 4.2 K and 4.7 T, transported to another magnet, heated to room temperature, and used for NMR experiments at 2.35 T. Cells with and without a rubidium coating were tested. In both cases, the NMR signal was greater than 100 times the thermal equilibrium signal. No evidence of a rubidium coating effect on the longitudinal relaxation time T 1 of 3 He (500 mbar) at 4.2 K could be demonstrated. NMR gradient‐echo images of the cells were acquired. Magn Reson Med 41:1084–1087, 1999. © 1999 Wiley‐Liss, Inc.