Delayed‐focus pulses for magnetic resonance imaging: An evolutionary approach | Zendy

Wu XiLi | Zendy; Xu Ping | Zendy; Freeman Ray | Zendy

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Delayed‐focus pulses for magnetic resonance imaging: An evolutionary approach

Author(s) -

Wu XiLi,

Xu Ping,

Freeman Ray

Publication year - 1991

Publication title -

magnetic resonance in medicine

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.696

H-Index - 225

eISSN - 1522-2594

pISSN - 0740-3194

DOI - 10.1002/mrm.1910200118

Subject(s) - focus (optics) , excitation , precession , nuclear magnetic resonance , physics , magnetic resonance imaging , signal (programming language) , resonance (particle physics) , mode (computer interface) , absorption (acoustics) , computer science , optics , atomic physics , computational physics , condensed matter physics , quantum mechanics , medicine , radiology , programming language , operating system

An evolutionary algorithm has been used to design a family of shaped radiofrequency pulses giving uniform absorption‐mode excitation across a predetermined frequency band. By allowing a free precession interval before signal acquisition, time is left for field gradients to be switched and for undesirable transients to decay. © 1991 Academic Press, Inc.

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