Oxygen-enhanced magnetic resonance ventilation imaging of the human lung at 0.2 and 1.5 T

Autor: Hiroto Hatabu, Martina M. Morrin, Klaus W. Stock, Qun Chen, Robert R. Edelman
Rok vydání: 1999
Předmět:
Zdroj: Journal of Magnetic Resonance Imaging. 9:838-841
ISSN: 1522-2586
1053-1807
DOI: 10.1002/(sici)1522-2586(199906)9:6<838::aid-jmri11>3.0.co;2-h
Popis: 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.
Databáze: OpenAIRE
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