Optical Pumping Spin Exchange {sup 3}He Gas Cells for Magnetic Resonance Imaging
- Department of Physics, Kyungpook National University Daegu, 702-701 (Korea, Republic of)
We present a device for spin-exchange optical pumping system to produce large quantities of polarized noble gases for Magnetic Resonance Imaging (MRI). A method and design of apparatus for pumping the polarization of noble gases is described. The method and apparatus enable production, storage and usage of hyperpolarized noble gases for different purposes, including Magnetic Resonance Imaging of human and animal subjects. Magnetic imaging agents breathed into lungs can be observed by the radio waves of the MRI scanner and report back physical and functional information about lung's health and desease. The technique known as spin exchange optical pumping is used. Nuclear magnetic resonance is implemented to measure the polarization of hyperpolarized gas. The cells prepared and sealed under high vacuum after handling Alkali metals into the cell and filling with the {sup 3}He-N{sub 2} mixture. The cells could be refilled. The {sup 3}He reaches around 50% polarization in 5-15 hours.
- OSTI ID:
- 21344458
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1149; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALKALI METALS
BODY
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
ELECTROMAGNETIC RADIATION
ELEMENTS
EVEN-ODD NUCLEI
FLUIDS
GASES
HELIUM 3
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
LUNGS
MAGNETIC RESONANCE
METALS
NITROGEN
NMR IMAGING
NONMETALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
OPTICAL PUMPING
ORGANS
POLARIZATION
PUMPING
RADIATIONS
RADIOWAVE RADIATION
RARE GASES
RESONANCE
RESPIRATORY SYSTEM
SPIN EXCHANGE
STABLE ISOTOPES
USES