Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2008-09-30
2008-09-30
Shrivastav, Brij (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S307000, C324S309000
Reexamination Certificate
active
11406573
ABSTRACT:
In a PPA MRT method and apparatus, a selected region of k-space containing respective portions of some of the incomplete, measured data lines and respective portions of some of the complete, reconstructed data lines is designated. For each data line in the selected region, a level of the noise therein is identified. For each reconstructed, complete data line in the selected region, a scaling factor is calculated that is dependent on the noise level in that reconstructed, complete data line and the noise level in at least one neighboring incomplete, measured data line in the selected region. The scaling factor is then applied to the reconstructed, complete data line in question, so that the contribution of that line to the overall reconstructed image is adjusted according to the scaling factor. The scaling factor can be limited dependent on where the selected region is located in k-space.
REFERENCES:
patent: 6841998 (2005-01-01), Griswold
patent: 7061651 (2006-06-01), Ogino
patent: 2003/0004408 (2003-01-01), Zhu
patent: 2003/0076099 (2003-04-01), Hajnal et al.
patent: 2005/0200351 (2005-09-01), Shimizu
patent: 2007/0182411 (2007-08-01), Bammer et al.
patent: 2007/0198203 (2007-08-01), Kimura
patent: 2007/0241751 (2007-10-01), Kholmovski et al.
“GARSE: Generalized Autocalibrating Reconstructions for Sensitivity Encoded MRI,” Kholmovski et al., Proc. Intl. Soc. Mag. Reson. Med. 13 (2005), p. 2672.
“Generalized Autocalibrating Partially Parallel Acquisitions (GRAPPA),” Griswold et al., Magnetic Resonance in Medicine, vol. 47 (2002), pp. 1202-1210.
Kannengiesser Stephan
Kholmovski Evgueni G.
Fetzner Tiffany A
Schiff & Hardin LLP
Shrivastav Brij
Siemens Aktiengesellschaft
LandOfFree
PPA MRT method and apparatus with scaled contribution of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with PPA MRT method and apparatus with scaled contribution of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PPA MRT method and apparatus with scaled contribution of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3913881