System and method for a nondestructive on-line testing of samples

摘要

A non-destructive on-line system for detecting a presence of a material in a sample of a substance, including: an MRI device; a flow conduit encompassed by the tunable RF coil of the MRI device and having an input duct and an output duct; a flow of the sample through the flow conduit; a signal detector for detecting frequency-dependent output signals from the MRI device as a function of a frequency variation of the RF tunable coil within a frequency range of an RF resonant frequency of a standard sample of the substance, and a processing unit.

主权项

1. A non-destructive on-line system for detecting a presence of a material a substance comprising:
an MRI device comprising a tunable RF coil and a signal detector, said signal detector is configured for detecting frequency-dependent output signals as a function of a frequency variation of the RF tunable coil within a frequency range of an RF resonant frequency of a standard sample of said substance; a flow conduit encompassed by said tunable RF coil and having an input duct and an output duct to allow a flow of said substance therethrough; and a processing unit, wherein said processing unit is configured to:
receive said frequency-dependent output signals from said detector;determine an impedance frequency variation from said frequency-dependent output signals and at least one operational parameter of the MRI device;determine RF frequency variation of inductance and RF variation of reactance from said impedance frequency variation; andcompare at least one of the RF frequency variation of the inductance and the RF frequency variation of the electrical reactance with an RF frequency variation of a corresponding inductance or reactance of said standard sample of said substance such that said comparison determines said material content of said substance.