MR method for determining the nuclear magnetization distribution

Details MR method for determining the nuclear magnetization distribution MR method for determining the nuclear magnetization distribution

1995-12-11

1997-05-27

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324318, G01V 300

Patent

active

056335857

ABSTRACT:
The invention relates to An MR method for determining the nuclear magnetization distribution in an examination zone, in which sub-image data are acquired by means of a surface coil arrangement comprising at least two surface coils and having a locally inhomogeneous sensitivity, MR superposition images being formed from said sub-image data by weighted summing. An as artefact-free as possible reproduction of MR superposition images is achieved in that the data of at least one sub-image acquired by means of a surface coil are multiplied by a further weighting function in such a manner that sub-image areas which contain artefacts are weighted less than areas without artefacts.

REFERENCES:
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patent: 4885541 (1989-12-01), Hayes
patent: 5086275 (1992-02-01), Roemer
patent: 5208534 (1993-05-01), Okamoto et al.
patent: 5248943 (1993-09-01), Fox et al.
patent: 5280246 (1994-01-01), Takahashi et al.
Society for Magnetic Resonance Imaging, 8th Meeting, 1989 Oak Brook, USA, K. Okamoto et al, p. 953, SNR Improvement with Multiple Surface Coils and Weighted Addition.
Magnetic Resonance In Medicine 16, pp. 192-225 (1990), The NMR Phased Array, P.B. Romer, et al.

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