会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 17. 发明授权
    • Transmit mode coil detuning for MRI systems
    • MRI系统的发射模式线圈失谐
    • US06850067B1
    • 2005-02-01
    • US10440834
    • 2003-05-19
    • Michael BurlMark Xueming Zou
    • Michael BurlMark Xueming Zou
    • G01R33/36G01V3/00
    • G01R33/3657G01R33/3628
    • A detuning circuit for an MRI coil having a series tuning capacitor includes: a detuning inductor and a PIN diode in parallel communication with the tuning capacitor, where the tuning capacitor has a tuning inductor node and a PIN diode node; a first diode and a second diode in parallel communication with the PIN diode, where the first, second and PIN diodes are arranged with the same serial polarity and the first and second diodes have a common node; and a reactance in communication between the common node and the tuning inductor node. The circuit detunes the MRI coil in response to an MRI transmit pulse. A detuning circuit for an MRI coil having a series tuning capacitor includes a detuning inductor; and a detuning switch in parallel combination with a secondary tuning capacitor, the detuning inductor and the parallel combination being in parallel communication with the series tuning capacitor. The secondary tuning capacitor acts to reduce current during detuning of the MRI coil.
    • 具有串联调谐电容器的MRI线圈的失谐电路包括:调谐电感器和与调谐电容并联连接的PIN二极管,其中调谐电容器具有调谐电感器节点和PIN二极管节点; 与PIN二极管并联连接的第一二极管和第二二极管,其中第一,第二和PIN二极管以相同的串行极性布置,并且第一和第二二极管具有公共节点; 以及在公共节点和调谐电感器节点之间的通信中的电抗。 该电路响应于MRI发射脉冲使MRI线圈断线。 具有串联调谐电容器的MRI线圈的失谐电路包括失谐电感器; 以及与二次调谐电容并联组合的失谐开关,所述失谐电感器和所述并联组合与所述串联调谐电容器并联连接。 二次调谐电容器用于在MRI线圈失谐期间减小电流。