Method and MR apparatus for PPA MR imaging with radial data...

Details Method and MR apparatus for PPA MR imaging with radial data... Method and MR apparatus for PPA MR imaging with radial data...

2007-09-04

2007-09-04

Shrivastav, Brij (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S307000

Reexamination Certificate

active

11119478

ABSTRACT:
In a method and for MR apparatus PPA imaging with radial data acquisition in magnetic resonance tomography, k-space is under-scanned by acquiring a number of projections φ with a coil array of M component coils, a shift operator C(±nΔk) is determined for a projection φi on the basis of measured magnetizations along a projection φi±α0 that encompasses with φi an angle α0, with n=1, 2, . . . , M−1, the shift operator C(±nΔk) is applied to individual points of projection φi in order to obtain calculated projection points, the determination and the application of the shift operator C(±nΔk) are repeated for all projections φ, and an image is reconstructed in the spatial domain on the basis of the projections, which have been completed purely computationally.

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“Chemical-Shift Imaging Utilizing the Positional Shifts Along the Readout Gradient Direction,” Altbach et al., IEEE Trans. on Medical Imaging, vol. 20, No. 11, Nov. 2001, pp. 1156-1166.

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