PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus which permits the deviation of the center of gravity of electric current in a spiral electric conductor 32 to be corrected.SOLUTION: The magnetic resonance imaging apparatus having the spiral electric conductor 32 has slits S1, S2, and S3 provided along the longitudinal direction in the electric conductor 32 and separating electric current conducting routes L1, L2, L3 and Ln formed in the electric conductor 32 into multi-sections. Among the separated electric current conducting routes L1, L2, L3 and Ln, those located nearer to the outside of the spiral shape are made wider (wn>w3>w2>w1). The slits S1, S2, and S3 are formed in the locations where the radius r0 of curvature of the electric conductor 32 is locally reduced in the longitudinal direction of the electric conductor 32.COPYRIGHT: (C)2012,JPO&INPIT【課題】渦巻形状の電気導体32における電流重心の偏りを矯正可能な磁気共鳴イメージング装置を提供する。【解決手段】渦巻形状の電気導体32を有する磁気共鳴イメージング装置において、電気導体32の長手方向に沿って電気導体32に設けられ、電気導体32に形成される電流導通路L1、L2、L3、Lnを複数に分けるスリットS1、S2、S3を有し、分けられた電流導通路L1、L2、L3、Ln同士では、渦巻形状の外側の方向にある電流導通路ほど、幅が広くなっている(wn>w3>w2>w1)。そして、スリットS1、S2、S3は、電気導体32の長手方向において、電気導体32の曲率半径r0が局所的に小さくなっているところに形成されている。【選択図】図5
