9.4T磁共振成像系统高通鸟笼射频线圈的研制  

Development of 9.4T MRI high pass birdcage coil

作　　者：陈思明[1,2] 张雪雷[1] 

机构地区：[1]中国科学院强磁场科学中心,安徽合肥230000 [2]中国科学技术大学,安徽合肥230000

出　　处：《电子技术应用》2017年第7期16-18,23,共4页Application of Electronic Technique

摘　　要：设计并制作了一个发射/接收一体的鸟笼线圈,该线圈采用正交激发/接收,谐振频率可以达到400 MHz,在9.4T成像系统中,可对H原子成像。Workbench测试表明,该线圈Q值较高,两个通道的隔离度达到20 d B。进行了样品测试,结果显示图像均匀、信噪比高、对比清晰。该线圈设计工艺简单,成本较低,对于超高场磁共振成像射频线圈的设计与制作具有一定的借鉴意义。Based on quadrature exciting and receiving technologies, a set of transmitting and receiving bird cage coil was designed and manufactured. The resonance can reach 400 MHz and imaging of atom H can also be attained on the 9.4 T imaging system. The workbench test result indicated that the bird cage coil reached a high Q value and the isolation of the two channels was 20 dB. At the same time, the sample test was conducted whose results showed that the image was of high uniformity, image SNR and clearness. Featuring simple design process and low cost, the birdcage coil has the model significance to the design and manufacturing of RF coils in ultra-high magnetic field imaging.

关 键 词：9.4T射频线圈 鸟笼线圈 调谐 信噪比 

分 类 号：TN751.2[电子电信—电路与系统]