Magnetic resonance imaging method

Details Magnetic resonance imaging method Magnetic resonance imaging method

1992-11-13

1996-06-04

Smith, Ruth S.

Surgery

Truss

Pad

1286533, 1286534, 324309, 324312, A61B 5055

Patent

active

055223907

ABSTRACT:
A magnetic resonance imaging method is proposed for the following of a dynamic process in a body (5), such as perfusion in the brain by means of a contrast agent such as Gd-DTPA, or the effects of a physical stimulus. The dynamic process is followed by way of a multiple-slice MR measurement through, for example, 10 slices. In accordance with the invention, before or after the injection of the contrast agent, high-resolution reference images of the slices are formed, the same slices being measured with a lower resolution during the perfusion of the contrast agent. Substitution of the low-resolution data in data matrices containing high-resolution data produces, after Fourier transformation, images of the slices in which the measured changes in image intensities due to the contrast medium are reproduced in the high-resolution images.

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patent: 5003264 (1991-03-01), Koizumi et al.
patent: 5190744 (1993-02-01), Rocklage et al.
"First Pass Cardiac Perfusion" Evaluation with Ultrafast MR Imaging D. J. Atkinson et al, Radiology, Mar. 1990, pp. 757-762.
Recent Progress in Fast MR Imaging, J. J. Van Vaals et al, Medica Mundi, vol. 36, No. 2, 1991, pp. 152-167.
"Application of a Generalized Series Reconstruction Algorithm to Biologic MR Imaging" A. Webb et al, 1992 Ann. Meeting Printed Program Works in Progress Supplement Article P. 447.

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