US 9,810,758 B2
Method and system for concentrating magnetization of nuclear spins
John A. Sidles, Seattle, WA (US); Jon Jacky, Seattle, WA (US); Joseph L. Garbini, Seattle, WA (US); and Rico Picone, Seattle, WA (US)
Assigned to University of Washington Through its Center for Commercialization, Seattle, WA (US)
Appl. No. 14/415,820
Filed by University of Washington through its Center for Commercialization, Seattle, WA (US)
PCT Filed Jul. 23, 2013, PCT No. PCT/US2013/051714
§ 371(c)(1), (2) Date Jan. 20, 2015,
PCT Pub. No. WO2014/018548, PCT Pub. Date Jan. 30, 2014.
Claims priority of provisional application 61/674,786, filed on Jul. 23, 2012.
Prior Publication US 2015/0185306 A1, Jul. 2, 2015
Int. Cl. G01R 33/34 (2006.01); G01R 33/60 (2006.01); G01R 33/54 (2006.01); G01R 33/12 (2006.01); G01R 33/38 (2006.01); G01R 33/383 (2006.01); G01R 33/3815 (2006.01); G01R 33/385 (2006.01)
CPC G01R 33/543 (2013.01) [G01R 33/1284 (2013.01); G01R 33/34 (2013.01); G01R 33/383 (2013.01); G01R 33/3808 (2013.01); G01R 33/60 (2013.01); G01R 33/385 (2013.01); G01R 33/3815 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a body comprising nuclear spin moments and electron spin moments within at least a portion of the body;
a magnetic device configured to provide a static magnetic field within the portion of the body, wherein the static magnetic field is configured to (a) cause a nuclear spin magnetization carried by respective pairs of the nuclear spin moments to be substantially pairwise conserved, (b) substantially align the electron spin moments with a direction of the static magnetic field, and (c) induce a space-varied distribution of magnetic resonance frequencies of respective electron spin moments; and
an alternating-field magnet configured to provide a time-varying magnetic field across the portion of the body, wherein the time-varying magnetic field is configured to induce a spatial gradient in a local magnetization of the respective electron spin moments such that concentrations of the nuclear spin magnetizations carried by respective pairs of the nuclear spin moments are spatially varied according to the spatial gradient in local magnetization of the respective electron spin moments.