Artifacts in functional magnetic resonance imaging from gaseous oxygen

S. Bates, Z. Yetkin, A. Jesmanowicz, J. S. Hyde, P. A. Bandettini, L. Estkowski, V. M. Haughton

Research output: Contribution to journalArticle

16 Scopus citations


Unexpectedly large fluctuations in signal intensity wen identified in the functional MRI (FMRI) of normal subjects breathing pure oxygen intermittently. To test the hypothesis that the signal changes were due to fluctuating concentrations of gaseous (paramagnetic) oxygen in the magnetic field, echo planar gradient echo images were acquired of a phantom contiguous to an oxygen mask through which pure oxygen was administered intermittently via plastic tubing. As a control, room air was administered intermittently or oxygen continuously in the same experimental protocol. Signal intensity changes of up to 60% temporally correlated with the administration of oxygen were produced in the phantom. In functional images prepared from the echo planar images, the signal intensity changes resulted in artifacts especially at interfaces in the phantom. The intermittent administration of pure oxygen during acquisition of data for FMRI may produce signal intensity changes that simulate or obscure function.

Original languageEnglish (US)
Pages (from-to)443-445
Number of pages3
JournalJournal of Magnetic Resonance Imaging
Issue number4
StatePublished - Jan 1 1995


ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Bates, S., Yetkin, Z., Jesmanowicz, A., Hyde, J. S., Bandettini, P. A., Estkowski, L., & Haughton, V. M. (1995). Artifacts in functional magnetic resonance imaging from gaseous oxygen. Journal of Magnetic Resonance Imaging, 5(4), 443-445.