GRADIENT COIL DEVICE REDUCED IN ARTIFACT OF MRI IMAGE AND MANUFACTURING METHOD FOR GRADIENT COIL

PROBLEM TO BE SOLVED: To provide a gradient coil reduced in artifact of MRI image and manufacturing method for a gradient coil. SOLUTION: The gradient coil 300 and other elements of a magnetic resonance imaging system include at least one layer 302 made of copper and having a first surface 31 and a second surface 318. A first semiconductor layer 314 is applied to the first surface 316 of copper 302 and an insulating layer is applied to the first semiconductor layer 314. In one embodiment, a second semiconductor layer 312 is applied to the second surface 318 of the copper 302. The first and second semiconductor layers encapsulate any voids formed between the copper and the semiconductor layers, equalize the potential around the voids and prevent partial discharge formation. COPYRIGHT: (C)2008,JPO&INPIT