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A new 3D localization technique using quadratic field gradients
Author(s) -
Wu Ed X.,
Johnson Glyn,
Hilal Sadek K.,
Cho ZangHee
Publication year - 1994
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.1910320214
Subject(s) - quadratic equation , selection (genetic algorithm) , field (mathematics) , quadratic model , quadratic function , computer science , algorithm , mathematical analysis , mathematics , physics , geometry , artificial intelligence , response surface methodology , pure mathematics , machine learning
A new method of 3D spatial selection using pulsed quadratic field gradients is presented. Like previous pulsed quadratic gradient methods the new method requires only two RF pulses to achieve selection in three dimensions. Unlike previous methods, however, precise alignment of linear and quadratic gradient coils is not required. This characteristic allows the method to be used with small or surface quadratic gradient coils. The method is demonstrated on phantoms and rats.