Detailed Information

Proper fraction of inspired oxygen for reduction of oxygen-induced canine cerebrospinal fluid hyperintensity on fluid attenuation inversion recovery sequence using low-field magnetic resonance imaging

Cited 0 time in Web of Science Cited 0 time in Scopus

Jang, Moonjung; Hwang, Jaewoo; Nam, Jihye; Kim, Dalhae; Son, Wongyun; Lee, Inhyung; Choi, Mincheol; Yoon, Junghee

Issue Date
Maruzen Co., Ltd/Maruzen Kabushikikaisha
Journal of Veterinary Medical Science, Vol.82 No.9, pp.1321-1328
Oxygen-induced cerebrospinal fluid (CSF) hyperintensity artifact is inevitable in fluid attenuation inversion recovery (FLAIR) magnetic resonance (MR) images of anesthetized animals. This experimental study aimed to confirm the occurrence of this artifact on low-field magnetic resonance imaging (MRI), and to determine the fraction of inspired oxygen (FiO(2)) that is safe and does not induce this artifact in canine brain MRI. Six healthy dogs underwent brain FLAIR MR scans under general anesthesia with 21%, 30%, 50%, 70%, and 100% FiO(2). The signal intensity (SI) ratio was calculated as the SI of CSF spaces divided by that of normalizing regions. The SI ratios of 21% FiO(2) images were significantly different from those of 100% FiO(2) images, indicating the presence of artifacts on 100% FiO(2) images. The SI ratios of 30% FiO(2) images were not significantly different from those of 21% FiO(2) images for any of CSF spaces. However, they were significantly different from those of 100% FiO(2) images in the cerebral sulci, third ventricle, interpeduncular cistern, mesencephalic aqueduct, and subarachnoid space at the level of the first cervical vertebra (P<0.05). All dogs had normal partial pressure of arterial oxygen (PaO2) during inhalation of 30% FiO(2), while two dogs had low PaO2 during inhalation of 21% FiO(2). Our findings support the hypothesis that high FiO(2) induces CSF hyperintensity artifact on low-field FLAIR MR images in dogs. FiO(2) of 30% is appropriate for obtaining brain FLAIR MR images with fewer artifacts in dogs.
Files in This Item:
There are no files associated with this item.
Appears in Collections:

Related Researcher

  • College of Veterinary Medicine
  • Department of Veterinary Medicine
Research Area Pain Medicine, Systematic Anesthesia, Veterinary Anesthesiology, 수의마취통증의학


Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.