介绍一种经直肠的射频线圈,通过减小线圈到前列腺的距离,增加线圈的填充系数以及提高线圈的品质因子的办法提高成像的信噪比。为了验证设计的效果.用网络分析仪对线圈的射频特性进行了分析。应用体模对线圈进行了模拟人体环境的成像,并与商用的TORSO线圈成像数据进行了比较分析.结果显示所设计线圈图像的信噪比要高出三倍.且其它参数都达到了设计的要求。
In order to increase the SNR of the prostate image, we have designed a RF endorectal coil. Its properties have been evaluated using a network analyzer. Moreover the images got with a special phantom show that the coil has much higher SNR at the region of interest (ROI).