The present application relates to magnetic resonance tomography (MRI) having a length along an axis and including a cylindrical gradient field coil assembly including an X-gradient field coil, a Y-gradient field coil, and a Z-gradient field coil. ) Disclosed is a gradient coil apparatus for the system. The gradient coil assembly further includes an intubation channel, the intubation channel extending radially from the axis along at least a portion of the length. [Selection] Figure 2本出願は、軸に沿った長さを有し、Ｘ－勾配磁場コイル、Ｙ－勾配磁場コイル、およびＺ－勾配磁場コイルを含む円筒状の勾配磁場コイル組立体を含む磁気共鳴断層撮影（ＭＲＩ）システムのための勾配磁場コイル装置を開示する。勾配磁場コイル組立体は、さらに挿管用チャネルを含み、挿管用チャネルは軸から、長さの少なくとも一部に沿って半径方向に延在する。【選択図】図２
