Method of and device for generating interleaved multiple-slice m

Details Method of and device for generating interleaved multiple-slice m Method of and device for generating interleaved multiple-slice m

1988-12-23

1990-03-13

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

049085786

ABSTRACT:
MRI utilizes so-called multiple-slice multiple-echo pulse sequences. Pulse sequences are generated in order to produce echo resonance signals in different sub-regions of a body, after which images of the various sub-regions are reconstructed from the resonance signals. The pulse sequences, for example spin echo sequences, are successively generated for the various sub-regions. More than one echo resonance signal can be generated by means of each pulse sequence. In order to reduce the overall measuring time the invention proposes the interleaving of a pulse sequence (ex1, ep11, er11, ep12, er12) for a sub-region with pulse sequences (ep02, er-12, ex2, ep21, er21, er02, ex3, ep31, er31, ep22) for other sub-regions. It is essential that the excitation pulse (ex1), the echo pulses (ep11, ep12) and the echo resonance signals (er11, er12) are phase coherent within a pulse sequence.

REFERENCES:
patent: 4599565 (1986-07-01), Hoenninger
patent: 4717879 (1988-01-01), Riederer

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