Patent ID: 6479994
Filing Date: 2002-11-12
Classification: G01N

Abstract:
A method of nuclear magnetic resonance spectroscopy comprising the steps of:conveying an object to be analysed through an NMR module at a redetermined velocity, v; generating, within the NMR module, a spatially characterised, constant magnetic field B0 substantially parallel to the direction of the velocity, v; generating, within the NMR module, a radiofrequency field B1 pulse transverse to field B0 using a coil having cylindrical geometry whose cylinder axis is aligned along the direction of velocity, by using a first series of loops in said coil in which the plane of each loop is tilted with respect to the cylinder axis to generate a field with a component perpendicular to the cylinder axis, and using a second series of loops in said coil which eliminate a longitudinal component of the RF field generated by said first series of loops; providing a sufficient continuous length of RF coil according to the velocity, v of objects passing therethrough in order to enable the step of detecting nuclear magnetic resonance signals weighted with at least one selected nuclear magnetic resonance parameter from said object while said object is moving at said predetermined velocity.