Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2011-06-07
2011-06-07
Shrivastav, Brij B (Department: 2858)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S309000
Reexamination Certificate
active
07956611
ABSTRACT:
A magnetic resonance imaging apparatus comprises a plurality of high-frequency reception coils, sensitivity distribution information obtaining means for calculating sensitivity distribution information of each of the high-frequency reception coil, sensitivity distribution storage means for storing the sensitivity distribution information, measuring means for acquiring magnetic resonance signals by thinning out encode steps of a k-space, image reconstructing means for reconstructing images using the magnetic resonance signals, and means for performing unfolding calculation using the sensitivity distribution information and the image, thereby to acquire the unfolded image.The magnetic resonance imaging apparatus further comprises means for estimating the sensitivity distribution information of a background region by using the sensitivity distribution information of an object region, and means for updating the background region by mutually using the sensitivity distribution information of the respective high-frequency receptions coils thereby to suppress noise component contained in the unfolded image.
REFERENCES:
patent: 6611143 (2003-08-01), Kuhara
patent: 6876201 (2005-04-01), Takizawa et al.
patent: 6946836 (2005-09-01), Kuhara
patent: 7205765 (2007-04-01), Machida et al.
patent: 7336076 (2008-02-01), Kuhara
patent: 7723987 (2010-05-01), Bito et al.
patent: 2004/0070394 (2004-04-01), Gonzalez Ballester et al.
patent: 2005/0033150 (2005-02-01), Takahashi et al.
patent: 2007/0198203 (2007-08-01), Kimura
patent: 2008/0081987 (2008-04-01), Miyazaki
patent: 2010/0013475 (2010-01-01), Kimura
patent: 2010/0182009 (2010-07-01), Crozier et al.
patent: 1371327 (2002-12-01), None
patent: WO02/056767 (2002-07-01), None
Zhao X. et al., “Reduction of artifacts by optimization of the sensitivity map in sensitivity-encoded spectroscopic imaging”,Magnetic Resonance in Medicine, Jan. 2005, vol. 53, No. 1, pp. 30 to 34.
Huang F. et al., “Application of partial differential equation-based inpainting on sensitivity maps”,Magnetic Resonance in Medicine, Feb. 2005, vol. 53, No. 2, pp. 388 to 397.
Cooper & Dunham LLP
Hitachi Medical Corporation
Shrivastav Brij B
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