Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2006-12-21
2008-11-04
Shrivastav, Brij B. (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S309000
Reexamination Certificate
active
07446526
ABSTRACT:
For in vivo magnetic resonance imaging at high field (≧3 T) it is essential to consider the homogeneity of the active B1field (B1+), particularly if surface coils are used for RF transmission. A new method is presented for highly rapid B1+ magnitude mapping. It combines the double angle method with a B1-insensitive magnetization-reset sequence such that the choice of repetition time (TR) is independent of T1and with a multi-slice segmented (spiral) acquisition to achieve volumetric coverage with adequate spatial resolution in a few seconds.
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Cunningham Charles H.
Nayak Krishna S.
Pauly John M.
Beyer Law Group LLP
Shrivastav Brij B.
The Board of Trustees of the Leland Stanford Junior University
Vaughn Megann E
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