Asymmetric Coils and Travelling Waves
نویسنده
چکیده
1. Asymmetric Volume Coils Asymmetric, noncircular volume coils are required in situations where the available access bore is noncircular in cross section, such as for table-top applications [1] or where the gradient bore is noncircular [2]. They consist of ladder network resonators such as the birdcage [3] or TEM [4] coil that have been modified by placing their rungs on a cylindrical surface other than the traditional circular cylinder. Similarly to the traditional designs, the noncircular versions are able to support quadrature operation. The challenge of building asymmetric volume coils is producing homogeneous RF fields.
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