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Study of the magnetic interaction of a 4-coil array and copper shielding with a PET/MRI using the finite-element method

机译:用有限元方法研究4线圈阵列和铜屏蔽层与PET / MRI的磁相互作用

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The effect of the shielding in a PET-MRI system was numerically estimated by calculating the RF magnetic field, B1, produced by a coil array of 4 independent elements at the resonant frequency of 171 MHz (4T for protons). The array coil is located inside a μPET camera to simultaneously acquire PET and MR images of a rat brain. Profiles showed a good uniformity despite the shielding that is interacting between the coil array and the μPET camera. These limitations are currently being dealt with the fabrication of a birdcage coil design.
机译:通过计算由4个独立元件的线圈阵列在171 MHz的共振频率(质子为4T)下产生的RF磁场B1数值估算PET-MRI系统中的屏蔽效果。阵列线圈位于μPET相机内部,以同时获取大鼠大脑的PET和MR图像。尽管线圈阵列和μPET相机之间存在屏蔽作用,但轮廓仍显示出良好的均匀性。这些限制目前正在鸟笼式线圈设计的制造中解决。

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