Parallel MR imaging using high-precision coil sensitivity map

Details Parallel MR imaging using high-precision coil sensitivity map Parallel MR imaging using high-precision coil sensitivity map

2005-09-27

2005-09-27

Shrivastav, Brij (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S309000, C324S318000

Reexamination Certificate

active

06949928

ABSTRACT:
A sensitivity distribution is estimated for a multicoil used in multicoil fast imaging. Initial sensitivity maps M1to M3are produced respectively from images C1to C3acquired from the plurality of RF coils in the multicoil. By fitting TPS (thin-plate splines) to the initial sensitivity maps M1to M3used as target data, sensitivity maps M1′ to M3′ for unfolding are estimated. In fitting the TPS, functions are activated, such as automatic arrangement of control points, addition of target points to the outside of an image, use of a known model, and fitting to at least either absolute value components of MR data or phase components of the MR data. Thus, even if only coarse echo data is acquired from the region to be imaged, a sensitivity map of each element coil of the multicoil is estimated with high precision.

REFERENCES:
patent: 6396269 (2002-05-01), Hajnal et al.
patent: 6556009 (2003-04-01), Kellman et al.
patent: 2004/0070394 (2004-04-01), Gonzalez Ballester et al.
patent: WO 01/8076 (2001-11-01), None
Pruessmann et al., “Sense:Sensitivity Encoding for Fast MRI” Magnetic Resonance in Medicine, Academic Press, Duluth, MN, US., vol. 42, No. 5, Nov. 1999, pp. 952-962, PX000866655.
Dawant et al., “Correction of Intensity Variations in MR Images for Computer-Aided Tissue Classification”, IEEE Transactions on Medical Imaging, IEEE Inc., New York, US, vol. 12, No. 4, Dec. 1, 1993, pp. 770-781, XP000447025.
Gonzalez Ballester et al, “Robust Estimation of Coil Sensitivities for RF Subencoding Acquisition Techniques”, Proceedings of the International Society for Magnetic Resonance in Medicine, 9thScientific Meeting and Exhibition, Glasgow, Scotland, UK, Apr. 21-27, 2001, p. 799, XP002277679.

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