Abstract:
:Magnetic resonance images of the lungs of a guinea pig have been produced using hyperpolarized helium as the source of the MR signal. The resulting images are not yet sufficiently optimized to reveal fine structural detail within the lung, but the spectacular signal from this normally signal-deficient organ system offers great promise for eventual in vivo imaging experiments. Fast 2D and 3D GRASS sequences with very small flip angles were employed to conserve the norenewable longitudinal magnetization. We discuss various unique features associated with performing MRI with hyperpolarized gases, such as the selection of the noble gas species, polarization technique, and constraints on the MR pulse sequence.
journal_name
Magn Reson Medjournal_title
Magnetic resonance in medicineauthors
Middleton H,Black RD,Saam B,Cates GD,Cofer GP,Guenther R,Happer W,Hedlund LW,Johnson GA,Juvan Kdoi
10.1002/mrm.1910330219subject
Has Abstract,Author List Incompletepub_date
1995-02-01 00:00:00pages
271-5issue
2eissn
0740-3194issn
1522-2594journal_volume
33pub_type
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