| 摘要 |
<p>A magnetic resonance image generating apparatus (1) comprising a first radiation source (5,7,8) capable of emitting a first radiation of a frequency selected to excite nuclear spin transitions in selected nuclei in a sample (2) being imaged and means (7) for detecting free induction decay signals from said selected nuclei, characterised in that said apparatus further comprises a second radiation source (6,9,10) 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.</p> |
