Relaxation time estimation in surface NMR
NMR relaxation time estimation methods and corresponding apparatus generate two or more alternating current transmit pulses with arbitrary amplitudes, time delays, and relative phases; apply a surface NMR acquisition scheme in which initial preparatory pulses, the properties of which may be fixed across a set of multiple acquisition sequence, are transmitted at the start of each acquisition sequence and are followed by one or more depth sensitive pulses, the pulse moments of which are varied across the set of multiple acquisition sequences; and apply processing techniques in which recorded NMR response data are used to estimate NMR properties and the relaxation times T.sub.1 and T.sub.2* as a function of position as well as one-dimensional and two-dimension distributions of T.sub.1 versus T.sub.2* as a function of subsurface position.
- Research Organization:
- VISTA CLARA INC. Mukilteo, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-08ER84979
- Assignee:
- VISTA CLARA INC.
- Patent Number(s):
- 9,599,688
- Application Number:
- 13/750,984
- OSTI ID:
- 1347572
- Resource Relation:
- Patent File Date: 2013 Jan 25
- Country of Publication:
- United States
- Language:
- English
Similar Records
TU-EF-BRA-01: NMR and Proton Density MRI of the 1D Patient
TU-EF-BRA-02: Longitudinal Proton Spin Relaxation and T1-Imaging