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Title: SNMR pulse sequence phase cycling

Patent ·
OSTI ID:1107899
;

Technologies applicable to SNMR pulse sequence phase cycling are disclosed, including SNMR acquisition apparatus and methods, SNMR processing apparatus and methods, and combinations thereof. SNMR acquisition may include transmitting two or more SNMR pulse sequences and applying a phase shift to a pulse in at least one of the pulse sequences, according to any of a variety cycling techniques. SNMR processing may include combining SNMR from a plurality of pulse sequences comprising pulses of different phases, so that desired signals are preserved and indesired signals are canceled.

Research Organization:
Vista Clara Inc. (Mukilteo, WA)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG02-08ER84979
Assignee:
Vista Clara Inc. (Mukilteo, WA)
Patent Number(s):
8,581,587
Application Number:
13/104,721
OSTI ID:
1107899
Country of Publication:
United States
Language:
English

References (15)

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Practical limitations and applications of short dead time surface NMR journal December 2010
Modified Spin‐Echo Method for Measuring Nuclear Relaxation Times journal August 1958
Imaging of groundwater with nuclear magnetic resonance journal November 2008
Surface NMR measurement of proton relaxation times in medium to coarse-grained sand aquifer journal January 1996
Surface-NMR relaxation and echo of aquifers in geomagnetic field journal September 2004
Nuclear magnetic resonance imaging using phase encoding with non-linear gradient fields patent August 2004
Phase-shifted pulse sequence for measurement of spin-lattice relaxation in complex systems journal December 1974
Method for reducing ringing in NMR measurements by combining NMR signals having a spin echo and spurious signal component patent October 2005
Depth and refocusing pulses designed for multipulse NMR with surface coils journal July 1983
Ground Liquid Prospecting Method and Apparatus patent January 1962
Diagnostic and therapeutic processes utilizing magnetic resonance imaging techniques patent May 1995
Multicoil NMR data acquisition and processing methods patent December 2008
Magnetic Resonance Sounding Applied to Aquifer Characterization journal May 2004

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