Patent ID: 8441256
Filing Date: 2013-05-14
Classification: G01F,G01N,G01R

Abstract:
1. A magnetic resonance based apparatus capable of measuring, without using time-of-flight measurements, flow regimes of multi-phase fluids in a pipe, comprising: a magnetic resonance module through which the fluid phases flow, wherein the magnetic resonance module includes a radiofrequency coil for transmitting and detecting a signal and means for generating inside the module a homogenous constant magnetic field Bx that is thermally compensated and a transverse magnetic field gradient Gx that is superposed on Bx, wherein said homogenous constant magnetic field Bx is generated by an array of first and second magnetic field bars arranged to provide a thermally compensated magnetic field, a third set of magnetic bars located in the diagonals with respect to the direction of said principal field and arranged so as to compensate the quadrupole moment, and a fourth set of magnetic bars arranged so as to generate a spatial localization; and at least one pre-polarization module through which the fluid phases flow before entering the magnetic resonance module.