MNR SPECTROSCOPY WITH MULTIPLE-COIL PROBES

摘要

An NMR inspection apparatus comprises a system (7) for providing a dissolved, hyperpolarized sample; and an NMR analysis system (80) connected to the hyperpolarizing system. The NMR analysis system includes a magnet (12) for generating a substantially homogeneous magnetic field in a working volume suitable for carrying out NMR and a number of rf magnetic field generators (2A-2D) located in the working volume. A non-electrically conducting conduit (10) passes adjacent the rf magnetic field generators and is coupled to the hyperpolarizing system (7) so as to convey a hyperpolarized sample past each rf magnetic field generator (2A-2D) in sequence. A sample control system (20) controls movement of a sample through the conduit. An NMR signal acquisition system controls the rf magnetic field generators to generate rf magnetic fields in accordance with a predetermined pulse sequence and detects the resulting NMR signals from the portions of the sample exposed to the rf magnetic fields.