| 摘要 |
<p>A nuclear magnetic resonance imaging system (30) for use in monitoring the position of a medical instrument inserted within the body of a subject. The system comprises: a nuclear magnetic resonance imaging device (31-42) ; a medical instrument (1) for inserting into the body of a subject, the medical instrument having a conduit for supplying a hyperpolarised gas to a region within and/or adjacent the medical instrument; and a hyperpolarised gas supply system (46) for supplying the hyperpolarised gas to the medical instrument.</p> |
