Snapshot MRI with T 2 *‐weighted magnetization preparation | Zendy

Bendel Peter | Zendy

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Snapshot MRI with T 2 *‐weighted magnetization preparation

Author(s) -

Bendel Peter

Publication year - 1993

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.1910300320

Subject(s) - dephasing , nuclear magnetic resonance , snapshot (computer storage) , magnetization transfer , magnetization , computer science , physics , materials science , pattern recognition (psychology) , artificial intelligence , magnetic resonance imaging , radiology , medicine , condensed matter physics , magnetic field , quantum mechanics , operating system

A method for encoding T 2 *‐dependent contrasts into the preparation period of magnetization‐prepared uitrafast MRI sequences is demonstrated and validated. The preparation block consists of a 90°—T—90° p sequence, where p is shifted by 90° for successive images. By adding two such successive images in quadrature, a combined image is obtained, in which the pixel intensities depend on the incoherent intravoxel dephasing that occurred during T in a way that is similar to the dependence on TE in a gradient‐echo sequence. The method could therefore be useful for applications that require very short repetition times for good temporal resolution, together with detection of T 2 *‐weighted contrasts, such as functional MRI in the brain.

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