Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2006-12-26
2006-12-26
Shrivastav, Brij B. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S307000
Reexamination Certificate
active
07154269
ABSTRACT:
Segmented echo planar nuclear magnetic resonance imaging is performed using an iterative correction method that corrects or suppresses geometric distortion in the image domain caused by off-resonance phase discontinuities in the phase encoding direction. The iterative correction method can be performed in a single scan by providing extra gradients in the pulse sequence to generate an extra transverse magnetization echo from the pulse. Additionally, the iterative correction method can be performed using a separate non-segmented double-echo scan in combination with data obtained using a conventional segmented echo planar imaging pulse sequence.
REFERENCES:
patent: 5742163 (1998-04-01), Liu et al.
patent: 6975113 (2005-12-01), Gurr
patent: 7042215 (2006-05-01), Moriguchi et al.
patent: 7081751 (2006-07-01), Twieg
patent: 7088099 (2006-08-01), Doddrell et al.
Beck, Gabrielle; et al; Reducing Oblique Flow Effects in Interleaved EPI With a Centric Reordering Technique; Magnetic Resonance in Medicine (2001) pp. 623-629, vol. 45; Wiley-Liss, Inc.
Buonocore, Michael H. and Gao, Lisheng; Ghost Artifact Reduction for Echo Planar Imaging Using Image Phase Correction; Magnetic Resonance in Medicine (1997) pp. 89-100; Williams & Wilkins.
Chen, Nan-Kuei and Wyrwicz, Alice M.; Correction for EPI Distortions Using Multi-Echo Gradient-Echo Imaging; Magnetic Resonance in Medicine (1999) pp. 1206-1213, vol. 41; Wiley-Liss, Inc.
Chen, Nan-Kuei and Wyrwicz, Alice M; Optimized Distortion Correction Technique for Echo Planar Imaging; Magnetic Resonance in Medicine (2001) pp. 525-528, vol. 45; Wiley-Liss, Inc.
Feinberg, David A., and Oshio, Koichi; Phase Errors in Multi-Shot Echo Planar Imaging; Magnetic Resonance in Medicine (1994) pp. 535-539; vol. 32; Williams & Wilkins.
Hu, Xiaoping and Le, Tuong Huu; Artifact Reduction in EPI with Phase-Encoded Reference Scan; Magnetic Resonance in Medicine (1996) pp. 166-171; vol. 36, Williams & Wilkins.
Jezzard, Peter and Balaban, Robert S.; Correction for Geometric Distortion in Echo Planar Images from BoField Variations; Magnetic Resonance in Medicine (1995) pp. 65-73, vol. 34, Williams & Wilkins.
Luk, Gerard T., et al; Reducing Flow Artifacts in Echo-Planar Imaging; Magnetic Resonance in Medicine (1997) pp. 436-447, vol. 37, Williams & Wilkins.
Reber, Paul J., et al; Correction of Off Resonance-Related Distortion in Echo-Planar Imaging Using EPI-Based Field Maps; Magnetic Resonance in Medicine (1998) pp. 328-330; vol. 39, Williams & Wilkins.
Reeder, Scott B. et al; Multi-Echo Segmented k-space Imaging: An Optimized Hybrid Sequence for Ultrafast Cardiac Imaging; Magnetic Resonance in Medicine (1999) pp. 375-385, vol. 41, Wiley-Liss, Inc.
Wan, Xin, et al; Reduction of Geometric and Intensity Distortions in Echo-Planar Imaging Using a Multireference Scan; Magnetic Resonance in Medicine (1997) pp. 932-944, vol. 37, Williams & Wilkins.
Haacke E. Mark
Xu Yingbiao
MR Innovations, Inc.
Shrivastav Brij B.
Thompson & Coburn LLP
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