IMPROVEMENTS IN AND RELATING TO MAGNETIC RESONANCE IMAGING

摘要

A magnetic resonance image generating apparatus comprising a first radiation source capable of emitting a first radiation of a frequency selected to excite nuclear spin transitions in selected nuclei in a sample being imaged and means for detecting free induction decay signals from said selected nuclei, characterised in that said apparatus further comprises a second radiation source capable of emitting a second radiation of a frequency selected to excite electron spin transitions coupled to the nuclear spin transitions of at least some of said selected nuclei.