Abstract
Oxygen-enhanced magnetic resonance (MR) imaging has been advocated since 1996 as a technique for evaluation of regional ventilation using molecular oxygen as the contrast agent. Molecular oxygen, which contains two unpaired electrons and is weakly paramagnetic, can provide not only regional ventilation, but also oxygen transfer (i.e., diffusion of oxygen from alveoli to capillary bed) and related information for oxygen-enhanced MR imaging.
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