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A new magnetic field geometry for spatial encoding of magnetic resonance imaging (MRI) is presented. The field is given by: B z (x, y) ϭ g y y cos(q x x), and is called a PERL field because it is PERiodic in x and Linear in y. Both imaging pulse sequences and encoding field design are analyzed theoretically. A two-dimensional (2D) imaging sequence is shown(More)
Ferro-refraction is the field magnification that is obtained when a current segment is near a high magnetic permeable boundary. It is shown that ferro-refraction may be used in the design of magnets for NMR or MRI to increase the efficiency of these magnets. The field may be modeled analytically with the Biot--Savart law and the inclusion of mirror image(More)
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