1. A method of imaging using magnetic resonance, the method comprising: administering hyperpolarized noble gas to a subject in a region to be imaged; applying a magnetic field of a magnitude between about 0.0001 Tesla and about 0.1 Tesla to the subject at least in the region of the subject to be imaged; detecting a spatial distribution of magnetic resonance signals of the hyperpolarized noble gas in the subject; and producing a representation of the spatial distribution.