A two-channel biplanar Z-gradient coil design is introduced by dividing the conventional coil surface into two sections radially. The corresponding lower and upper sections are driven by the same current strength but in opposite directions. Coils were designed using the Fourier series expansion (target field) method. For the same target field, the dissipated power of the two-channel biplanar Z-gradient coil was lower than that of the conventional coil (with corresponding dimensions) by at least 25% thereby reducing the ohmic losses. In the future, the benefit of using multi-channel bi-planar gradient coils may be further investigated.
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