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. Author manuscript; available in PMC: 2019 Sep 1.
Published in final edited form as: Magn Reson Med. 2018 Jan 25;80(3):1125–1131. doi: 10.1002/mrm.27080

Figure 1.

Figure 1

Illustration of the experimental design. (a) each subject was scanned twice on Scanner 1 with a short break and repositioning between two identical sessions, then the subject was escorted to Scanner 2 to repeat the same procedure; (b) each session began with 3 TRUST scans while the subject breathed room air without mouth piece. Then the subject was pulled out of the scanner for placement of nose clip and mouthpiece, and entered the scanner again. One TRUST scan was acquired while the subject breathed room air through mouthpiece; then the inhaled air was switched to hyperoxic gas, and one TRUST scan was acquired after the subject’s physiology reached a new steady state.