Magnetic resonance device and signal combination device

Details Magnetic resonance device and signal combination device Magnetic resonance device and signal combination device

1992-11-25

1994-06-07

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01V 300

Patent

active

053193091

ABSTRACT:
A known magnetic resonance device (1) operates with a coil array (c1 to cn) which serves as a detection coil whereby magnetic resonance signals are detected so as to form partial images of a sub-volume of an object (5) to be measured. A signal processing unit (9) forms an overall image from the partial images. Because the known device utilizes separate detection and signal acquisition channels, it is comparatively expensive and complex. In accordance with the invention, a simpler and less expensive magnetic resonance device (1) is obtained in that the device comprises a signal combination device (28) which shifts frequency ranges (s1 to sn) of individual coil elements in the coil array in respect of frequency and which forms, from the shifted frequency ranges (o1 to on) a sum signal (sm) in which the frequency ranges are separated from one another. As a result, many common circuits can be saved, without leading to a loss of flexibility of the device (1), so that the advantages of fully separated channels are retained.

REFERENCES:
patent: 4577152 (1986-03-01), Macovski
patent: 4665366 (1987-05-01), Macovski
patent: 4825162 (1989-04-01), Roemer et al.
patent: 4918387 (1990-04-01), McKinnon et al.

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