An MRI Receiver Coil Produced by Inkjet Printing Directly on to a Flexible Substrate
An MRI Receiver Coil Produced by Inkjet Printing Directly on to a Flexible Substrate
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DOI：
10.1109/tmi.2009.2036996
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发表时间：
2010-02-01
影响因子：
10.6
通讯作者：
Korvink, Jan G.
中科院分区：
文献类型：
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作者：
Mager, Dario;Peter, Andreas;Korvink, Jan G.
喷墨印刷已被用于生产谐振射频线圈，其与通过常规印刷电路板（PCB）方法生产的那些谐振射频线圈相当。线圈由导电回路和串联电容器组成，构成用于磁共振成像（MRI）的接收器电路的一部分。谐振电路在400 MHz的预定频率处是选择性的。所需的电气元件（电阻器，电容器和电感器）通过喷墨印刷生产，在印刷具有集成电容器的完整回路之前进行电阻器和电容器的缩放实验。数值模拟用于确定组件所需的值。在连接到网络分析仪和MRI硬件之前，将喷墨印刷电路与小型调谐和匹配板组合。在400 MHz时匹配38 dB，实现的结果与标准PCB技术相当。作为核磁共振和MRI的接收器设备的喷墨打印组件的性能通过成像参考幻影和整个猕猴桃来验证;它与标准MRI设备相比是有利的。因此，喷墨印刷可以被认为是用于在柔性基板上生产MRI接收器电路的可行技术。
Inkjet printing has been used to produce resonant radio frequency coils that are comparable to those produced by conventional printed circuit board (PCB) methods. The coils, which consist of a conductive loop and in-series capacitors, form part of a receiver circuit that is used for magnetic resonance imaging (MRI). The resonant circuit is selective at the predetermined frequency of 400 MHz. The required electrical components (resistor, capacitor, and inductor) were produced by inkjet printing, with scaling experiments for resistor and capacitor performed before the complete loops with integrated capacitors were printed. Numerical simulation was used to determine the required values for the components. The inkjet printed circuit was combined with a small tuning and matching board before being connected to a network analyzer and the MRI hardware. With a matching of 38 dB at 400 MHz the achieved results were comparable to those from standard PCB techniques. The performance of the inkjet printed component as a receiver device for nuclear magnetic resonance and MRI was verified by imaging reference phantoms and a whole kiwifruit; it compares favorably to standard MRI devices. Inkjet printing can, therefore, be considered a feasible technique for producing MRI receiver circuits on flexible substrates.