Diffusion sensitizing imaging method and MRI apparatus

Details Diffusion sensitizing imaging method and MRI apparatus Diffusion sensitizing imaging method and MRI apparatus

1995-06-23

1997-11-11

Casler, Brian L.

Surgery

Truss

Pad

324307, 324309, A61B 5055

Patent

active

056853041

ABSTRACT:
A diffusion sensitizing imaging method and MRI apparatus capable of reducing image pickup time and thereby suppress artifacts attributable to body movement, wherein an RF pulse of 90.degree. is applied to a diagnostic portion so that spins are created therein; and an RF pulse of 180.degree. is applied on expiration of a time length TE/2 so as to reverse the spins; an echo is imaged; and the image after an echo center is sampled; and the RRF pulse application is such that the gradients of the read out axis and the warp axis form a spiral trajectory which extends in a spiral form from the center to the end of the k-space; and wherein before and after application of the 180.degree. RF pulse, strong motion probing gradients, for diffusion sensitization, are applied to an arbitrary gradient axis; and wherein the phase of the MR data is modified based on the phase of the MR data at the center of the k-space, or based on the average phase of the MR data at the center of the k-space.

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