MRI apparatus having an optimally adjusted detection chain and a

Details MRI apparatus having an optimally adjusted detection chain and a MRI apparatus having an optimally adjusted detection chain and a

1990-08-29

1992-03-03

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

050936212

ABSTRACT:
An MRI apparatus is proposed with an optimally adjusted gain of the detection chain, said MRI apparatus being used for generating pulse and gradient sequences which comprise an excitation pulse having a predetermined excitation angle and a phase encoding gradient. In order to obtain a data set wherefrom an MR image is reconstructed, the pulse and gradient sequence is repeated a number of times, for example 128 times, while varying the value of the time integral of the phase encoding gradient, for lower profile numbers there being chosen an excitation angle which is smaller or greater than the predetermined excitation angle in order to prevent overdriving of the detection chain. The detection chain of such an apparatus is optimally used for obtaining a data set for an MR image.

REFERENCES:
patent: 4070708 (1978-01-01), Smallcombe et al.
patent: 4695798 (1987-09-01), Brandes
patent: 4701711 (1987-10-01), Willard et al.
patent: 5015954 (1991-05-01), Dechene et al.

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