Premium
Oxygen‐enhanced magnetic resonance ventilation imaging of the human lung at 0.2 and 1.5 T
Author(s) -
Stock Klaus W.,
Chen Qun,
Morrin Martina,
Hatabu Hiroto,
Edelman Robert R.
Publication year - 1999
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/(sici)1522-2586(199906)9:6<838::aid-jmri11>3.0.co;2-h
Subject(s) - ventilation (architecture) , magnetic resonance imaging , oxygen , nuclear medicine , lung , medicine , room air distribution , lung ventilation , nuclear magnetic resonance , chemistry , radiology , physics , organic chemistry , thermodynamics
Lung ventilation imaging using inhaled oxygen as a contrast medium was performed using both a 0.2 and a 1.5 T clinical magnetic resonance (MR) scanner in eight volunteers. Signal‐to‐noise‐ratios (SNRs) of the ventilation images as well as T1 values of the lung acquired with inhalation of 100% oxygen and room air were calculated. The SNR was 9.7 ± 3.0 on the 0.2 T MR system and 69.5 ± 28.8 on the 1.5 T system ( P < 0.001). The mean T1 value on the 0.2 T MR system with subjects breathing room air was 632 ± 54 msec; with 100% oxygen, it was 586 ± 41 msec ( P < 0.01). At 1.5 T, the mean values were 904 ± 99 msec and 790 ± 114 msec, respectively ( P < 0.0001). We conclude that MR oxygen‐enhanced ventilation imaging of the lung is feasible with an open configured 0.2 T MR system. J. Magn. Reson. Imaging 1999;9:838–841. © 1999 Wiley‐Liss, Inc.