MULTIPLEXED RECEIVER COILS FOR MRI

该项目的长期目标是开发高性能 用于人体脊柱磁共振成像的表面线圈阵列和多路复用器。 目前，如果不求助于 全身线圈或大型表面线圈。可用表面线圈丢失 增加线圈尺寸时的信噪比(SNR)。该线圈阵列和 这里提出的多路复用器将提供任意大的视野 (FOV)而不牺牲SNR。这将通过线圈阵列来实现 在元件具有最小耦合的情况下，一组前置放大器、滤波器和 与MR系统同步的信号复用器。输出 然后将多路复用器的接收通道输入到 传统的磁共振系统。然后，数据将通过邮寄进行解密 加工软件从独立线圈提供完整的图像。 这样的系统将允许对脊柱进行完整的MR图像检查，同时 提供单个小直径表面线圈的高性能。 由于该设计可以完全位于主MR系统之外，因此它 将适用于大多数主要的磁共振成像系统。此外，成本 这样的设计将大大低于目前可用的 另类选择。

The long term objective of this project is to develop a high performance surface coil array and multiplexer for MRI imaging of the human spine. Currently, there is no way to image the entire spine without resorting to whole body coils or large surface coils. Available surface coils lose signal to noise (SNR) when coil size is increased. The coil array and multiplexer proposed here would provide an arbitrarily large field of view (FOV) without sacrificing SNR. This would be accomplished by a coil array with elements having minimal coupling, a set of preamplifiers, filters and a signal multiplexer which is synchronized with the MR system. The output of the multiplexer would then be input to the receiver channel of a conventional MR system. The data would then be unscrambled by post processing software to provide a complete image from the independent coils. Such a system will allow a complete MR image survey of the spine while providing the high performance of a single small diameter surface coil. Because the design can be completely external to the main MR system, it will be adaptable to most major MR imaging systems. In addition, the cost of such a design would be significantly lower than currently available alternatives.