Patent ID: 9121889
Filing Date: 2015-09-01
Classification: G01R

Abstract:
1. A method of diagnostic imaging comprising (a) exposing a subject to a pulsed magnetic field of at least about 0.25 T, (b) exposing a subject to a magnetic field of at least about 0.001 T which is substantially spatially homogeneous in a region of interest of the subject, (c) exposing the subject to a radiofrequency pulse which causes nuclei of atoms within the subject to experience spin precession, (d) subjecting the subject to an additional magnetic field, (e) providing a cell containing an atomic vapor, (f) preparing the atomic vapor in a state that exhibits electromagnetically induced transparency, (g) traversing the atomic vapor with a laser beam, (h) detecting a characteristic of the laser beam, (i) using as an input the detected characteristic and the characteristics of the additional magnetic field, estimating a function of the spin precession caused by the radiofrequency pulse, and (j) using the estimated function of the spin precession to produce an image of the region of interest.