公开(公告)号：US4725803A

公开(公告)日：1988-02-16

申请号：US918972

申请日：1986-10-15

申请人： Claude Prevot ,  Bernard Rigeade ,  Jean Miscopein

发明人： Claude Prevot ,  Bernard Rigeade ,  Jean Miscopein

IPC分类号： G01R33/385 ,  H01F7/20 ,  H01F5/00

CPC分类号： H01F7/20 ,  G01R33/385

摘要： A gradient coil is provided for a nuclear magnetic resonance image forming apparatus, the gradient coil being formed of four identical arrangements symmetrical with respect to the centre of a predetermined examination space. These arrangements comprise conductors formed in the shape of a saddle. In a particular embodiment for each arrangement two groups of conductors are provided. They may moreover be superimposed. In the invention, the conductors are flat conductors. Preferably their section is rectangular, the large side being greater than or equal to two and a half times the small side. The choice of flat conductors reduces the self-inductance of the system thus constructed. Finally, it is the necessary driving power which is reduced for establishing a field gradient. The temperature behavior of the whole of the apparatus is improved thereby.

摘要翻译： 提供了一种用于核磁共振成像装置的梯度线圈，该梯度线圈由相对于预定检查空间的中心对称的四个相同的装置形成。 这些布置包括形成为鞍形形状的导体。 在每个布置的特定实施例中，提供两组导体。 他们还可以叠加。 在本发明中，导体是扁平导体。 优选地，它们的截面是矩形的，大侧面大于或等于小边的两倍半。 扁平导体的选择降低了如此构造的系统的自感。 最后，为了建立场梯度，减少了必要的驱动力。 从而提高整个装置的温度特性。