PROBLEM TO BE SOLVED: To more uniformly cool a gradient magnetic field coil than before.SOLUTION: In one embodiment of this gradient magnetic field coil unit, at least one of one end side and the other end side of a support member incorporated with coil elements is opened, so that a hollow portion is formed thereinside, and the gradient magnetic field coil unit includes a first pipe member, a second pipe member, and a plurality of relay pipe members. The first pipe member is embedded inside the support member from the one end side toward the other end side, and a cooling medium flows into the first pipe member from the one end side. The second pipe member is embedded inside the support member from the one end side toward the other end side so as to face to the first pipe member in a state where the hollow portion is sandwiched between the first pipe member and the second pipe member, and makes the cooling medium flow out from the other end side. The plurality of relay pipe members are embedded inside the support member, are respectively connected to different portions of the first pipe member, are respectively connected to different portions of the second pipe member, and make the cooling medium flowing in from the first pipe member flow into the second pipe member.COPYRIGHT: (C)2013,JPO&INPIT【課題】傾斜磁場コイルを従来よりも均一に冷却する。【解決手段】一実施形態では、傾斜磁場コイルユニットは、コイルエレメントが内蔵された支持部材の一端側または他端側の少なくとも一方が開口していることで内側に中空部分が形成されたものであり、第1管部材と、第2管部材と、複数の中継管部材とを備える。第1管部材は、支持部材内で前記一端側から前記他端側に向けて埋設され、第1管部材には前記一端側から冷却媒体が流入する。第2管部材は、中空部分を間に挟んで第1管部材に対向するように、支持部材内で前記一端側から前記他端側に向けて埋設され、前記他端側から冷却媒体を流出させる。複数の中継管部材は、支持部材内に埋設され、第1管部材の異なる部分にそれぞれ連結していると共に第2管部材の異なる部分にそれぞれ連結し、第1管部材から流入する冷却媒体を第2管部材に流入させる。【選択図】 図2
