Hyperintensity of Subarachnoid Space on FLAIR Images Caused by Supplemental Oxygen.
- Author:
Yun Ju CHOI
1
;
Seung Han LEE
;
Chang Beom BAE
;
Ji Yun PARK
;
Weol Min KIM
;
Byung Cheol OH
Author Information
1. Department of Neurology, Presbytarian Medical Center, Seonam University College of Medicine, Jeonju, Korea.
- Publication Type:Case Report
- Keywords:
Fluid-attenuated inversion recovery (FLAIR);
Oxygen;
Subarachnoid space
- MeSH:
Humans;
Meningitis;
Oxygen*;
Subarachnoid Hemorrhage;
Subarachnoid Space*
- From:Journal of the Korean Neurological Association
2015;33(1):26-28
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
A hyperintensity in the subarachnoid space on fluid-attenuated inversion-recovery (FLAIR) images is often caused by diseases such as subarachnoid hemorrhage or meningitis. Oxygen has a known paramagnetic effect and also causes signal changes in the subarachnoid space on FLAIR images. These changes usually develop when the inspired air contains a high oxygen fraction. Here we present a patient with a hyperintensity in the subarachnoid space on FLAIR images whose inspired air contained only a low oxygen fraction.
