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MRI of hyperpolarized 3 He gas in human paranasal sinuses
Author(s) -
Rizi Rahim R.,
Dimitrov Ivan E.,
Thompson Alan,
Jones Gordon,
Gentile Tom R.,
Ishii Masaru,
Reddy Ravinder,
Schnall Mitchell D.,
Leigh John S.
Publication year - 1998
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/mrm.1910390603
Subject(s) - paranasal sinuses , nuclear magnetic resonance , magnetic resonance imaging , nuclear medicine , chemistry , medicine , radiology , physics
In this study, MRI of hyperpolarized 3 He gas in human para‐nasal sinuses is presented. Helium images were obtained at 1.5 T, using a surface coil and a 2D, fast gradient‐echo sequence with a nominal constant flip angle of 12°. Coronal images of 20‐mm thick slices were generated and compared with proton images of the corresponding sections. The images enable visualization of the paranasal sinuses and the nasal cavity, suggesting a potential use of this method not only in identifying the anatomical configuration of these pneumatic spaces, but also in assessing sinus ventilation.