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MRI of hyperpolarized 3He gas in human paranasal sinuses

✍ Scribed by Dr. Rahim R. Rizi; Ivan E. Dimitrov; Alan Thompson; Gordon Jones; Tom R. Gentile; Masaru Ishii; Ravinder Reddy; Mitchell D. Schnall; John S. Leigh

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
443 KB
Volume
39
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

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.

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