한국자기공명학회논문지 (Journal of the Korean Magnetic Resonance Society)

한국자기공명학회 (Korean Magnetic Resonance Society)
권호 표지

MRI with Continuously Flowing Laser-Polarized $^3He$

  • Lee, Hyeong-Ju (Department of Chemistry/Division of Molecular and Life Sciences Pohang University of Science and Technology) ;
  • Kim, Chul (Department of Chemistry/Division of Molecular and Life Sciences Pohang University of Science and Technology) ;
  • Kim, Byung-Soo (Department of Chemistry/Division of Molecular and Life Sciences Pohang University of Science and Technology) ;
  • Kim, Do-Hun (Department of Chemistry/Division of Molecular and Life Sciences Pohang University of Science and Technology) ;
  • Lee, Hee-Cheon (Department of Chemistry/Division of Molecular and Life Sciences Pohang University of Science and Technology)
  • 발행 : 2003.06.01
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초록

MRI of laser-polarized $^{129}$ Xe under continuous flow conditions has recently been used for imaging of porous materials, however, any attempts at using a continuously circulating flow of laser-polarized $^3$He have not been made until now, presumably due to its extremely long spin exchange time (5-10 hrs). Since the inherent NMR sensitivity of $^3$He is 80 times greater than that of $^{129}$ Xe when considering the natural abundance, $^3$He can be expected to be a better nucleus for imaging than $^{129}$ Xe even under continuous flow conditions. In this report, the first MRI with continuously flowing laser-polarized $^3$He is shown for a phantom of Teflon tubing, demonstrating the feasibility of $^3$He imaging under continuous flow.

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