Birdcage (BC) coils generate a homogeneous magnetic field (jB 1 j), whose strength depends on the length of the coils, the number of legs, the resonance frequency, the excitation method, and the length-to-diameter ratio. BC coils with a shorter distance between the end rings produce a more intense jB 1 j field with a higher level of homogeneity. Here, we propose a combination of over-
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