Lupu M, Dimicoli J L, Volk A, Mispelter J
INSERM, Institut Curie, Recherche. Laboratoires R. Latarjet, Centre Universitaire, Bât. 112, F-91405, Orsay Cedex, France.
MAGMA. 2004 Dec;17(3-6):363-71. doi: 10.1007/s10334-004-0059-3. Epub 2004 Nov 8.
We are presenting, in this paper, a simple, easily reproducible and easily tuneable design for home-built birdcage probes inducing a linearly polarised B1 field. A simple tuning method is proposed which preserves the induced field homogeneity that characterises in general the birdcage design. This is achieved by adding two extra rings (link rings) that allow one to connect two opposed points on the birdcage end rings via tuning capacitors. All the development stages, from design to practical realisation, are presented, step by step, in order to facilitate experimentalist work. Some images obtained with the birdcage probe are presented, accompanied by the B1 maps in transverse as well as longitudinal planes. Finally, a few suggestions are made for obtaining a circularly polarised magnetic field configuration.
在本文中，我们展示了一种用于自制鸟笼式探头的简单、易于重现且易于调谐的设计，该探头可产生线性极化的B1场。我们提出了一种简单的调谐方法，该方法能保持通常表征鸟笼式设计的感应场均匀性。这是通过添加两个额外的环（连接环）来实现的，这两个环允许通过调谐电容器连接鸟笼端环上的两个相对点。从设计到实际实现的所有开发阶段都逐步呈现出来，以便于实验人员开展工作。展示了用鸟笼式探头获得的一些图像，并伴有横向和纵向平面的B1图。最后，针对获得圆极化磁场配置提出了一些建议。
