Method and system of MR imaging with reduced FSE cusp artifacts

Details Method and system of MR imaging with reduced FSE cusp artifacts Method and system of MR imaging with reduced FSE cusp artifacts

2011-05-31

2011-05-31

Shrivastav, Brij B (Department: 2858)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S309000

Reexamination Certificate

active

07952351

ABSTRACT:
Coil sensitivity of a receive coil to a gradient null location is measured and, from the measurements, a coil calibration value is determined and used to modify the MR data acquired with that receive coil to reduce the adverse effects of gradient nulling on MR images. Coil sensitivity values are determined for each coil of a coil array and the data for each coil is respectively weighted. An image that is substantially free of gradient null artifacts or ghosting is then reconstructed from the weighted data.

REFERENCES:
patent: 4636728 (1987-01-01), Compton et al.
patent: 4665367 (1987-05-01), Kramer et al.
patent: 6289232 (2001-09-01), Jakob et al.
patent: 6556009 (2003-04-01), Kellman et al.
patent: 6900635 (2005-05-01), Petropoulos et al.
patent: 6975115 (2005-12-01), Fujita et al.
patent: 7250762 (2007-07-01), King et al.
patent: 7683614 (2010-03-01), Posse
patent: 2006/0161060 (2006-07-01), Pai
patent: 2008/0129298 (2008-06-01), Vaughan et al.
patent: 2008/0262339 (2008-10-01), Garwood et al.
patent: 2009/0264734 (2009-10-01), Degani et al.
Steckner MC, Dannels WR. The FSE “cusp” artifact: interactions between RF rolloff, gradient rollover, and B0 homogeneity. In: Proceedings of the 3rd SMR, Nice, 1995, 765.
Kim JK, White LM, Hinks RS, King KF. The FSE cusp artifact: a phase wrap-in artifact seen on routine clinical MR images of the knee.
Pruessmann KP, Weiger M, Scheidegger MB, Boesiger P. Sense: sensitivity encoding for fast MRI. Magn Reson Med 1999;42:952-962.
Press WH, Teukolsky SA, Vetterling WT, Flannery BP. Numerical Recipes in C. Cambridge: Cambridge University Press; 1992, pp. 61-66, and 808-812.
Kellman P, Mcveigh ER. Ghost artifact cancellation using phase array processing. Magn Reson Med 2001;46:335-343.
Larkman DJ, Herlihy AH, Coutts GA, Hajnal JV. Elimination of magnetic field foldover artifacts in MR images. J Magn Reson Imaging 2000;12:795-797.
Walsh DO, Gmitro AF, Marcellin MW. Adaptive reconstruction of phased array MR imagery. Magn Reson Med 2000;43:682-690.
Bydder M, Larkman DJ, Hajnal JV. Detection and elimination of motion artifacts by regeneration of k-space. Magn Reson Med 2002;47:677-686.
Bydder M, Atkinson D, Larkman D, Hill DLG, Hajnal JV. SMASH navigators. Magn Reson Med 2003;49:493-500.

Affiliated with

Also associated with

Rating

Method and system of MR imaging with reduced FSE cusp artifacts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system of MR imaging with reduced FSE cusp artifacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system of MR imaging with reduced FSE cusp artifacts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2653981