Data processing method in nuclear magnetic resonance measurement

Details Data processing method in nuclear magnetic resonance measurement Data processing method in nuclear magnetic resonance measurement

1991-09-09

1994-03-22

Envall, Jr., Roy N.

Boots, shoes, and leggings

324309, G06F 1542, G01R 3320

Patent

active

052970337

ABSTRACT:
This invention relates to a data processing method for suppressing truncation artifacts mixed into two-dimensional images in nuclear magnetic resonance imaging. Two-dimensional measurement data arrays are obtained on a space frequency domain by the combination of phase encoding and a readout gradient magentic field, and a data position providing the greatest value of the one-dimensional data array constituting the two-dimensional measurement data array is obtained in the readout direction so as to estimate the origin of the space frequency axis in the readout direction. A high-pass filter using the estimated origin as a reference is applied to each one-dimensional data array, and data extrapolation is made for each one-dimensional data array to obtain a data array having an expanded region. Nuclear spin images are obtained by inverse Fourier transformation of these data arrays.

REFERENCES:
patent: 4973111 (1990-11-01), Haacke et al.
patent: 5001429 (1991-03-01), Constable et al.
patent: 5079697 (1992-01-01), Chesler
patent: 5165411 (1992-11-01), Miyamoto et al.
"Modified Linear Prediction Modeling in Magnetic Resonance Imaging," Joel F. Marting and Charles F. Tirendi, Journal of Magnetic Resonance, vol. 82, 1989, pp. 392-399.

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