Nijhof E J
Interuniversity Cardiology Institute, The Netherlands.
Magn Reson Imaging. 1990;8(3):345-9. doi: 10.1016/0730-725x(90)90109-f.
The electric equivalent of an Alderman-Grant slotted resonator is analyzed in terms of two one-turn solenoids interconnected by a slotted cylinder resonator. The homogeneity of the magnetic RF field is probed using NMR imaging techniques and found to be comparable to that of a saddle-shaped coil. The dielectric losses of the slotted resonator are intrinsically low and much smaller than the inductive losses. Inductive losses are found to be proportional to the sample conductivity and to the fourth power of the sample diameter.
根据由开槽圆柱谐振器互连的两个单匝螺线管，对奥尔德曼 - 格兰特开槽谐振器的电等效电路进行了分析。使用核磁共振成像技术探测射频磁场的均匀性，发现其与鞍形线圈的均匀性相当。开槽谐振器的介电损耗本质上很低，远小于电感损耗。发现电感损耗与样品电导率和样品直径的四次方成正比。
