BIOMEDICAL RESEARCH SUPPORT GRANT

我们建议购买自屏蔽磁梯度组件以 更新我们的通用电气核磁共振CSI 2-特斯拉成像仪/光谱仪系统。这个 梯度升级由高强度(7Gauss/cm)自屏蔽X、Y、 和Z梯度线圈，新的梯度放大器，以及更高的分辨率 与现有核磁共振仪器的数字接口。 目前的无屏蔽磁梯度系统受到严重涡流的影响。 电流失真，在局域体积核磁共振中产生伪影 光谱学和短回波时间成像。此外，他们的低场- 强度(+/-2高斯/厘米)阻止高分辨率、小视场 成像。梯度升级将解决这两个问题。 目前，研究人员必须投入相当大的比例(通常超过一半) 他们分配给核磁共振仪器进行数据分析的时间，因为CSI是一个 单用户系统，并且用户的计算机硬件和软件都用于 成像研究中的采集与通用计算机 实验室。该仪器由影像研究实验室中的仪器组成 共享设施，其运营根据以下规定进行审核和管理 大学政策。

We propose the purchase of a self-shielded magnetic gradient package to update our General Electric NMR CSI 2-Tesla Imager/Spectrometer system. The gradient upgrade consists of high-strength (7 Gauss/cm) self-shielded X,Y, and Z gradient coils, new gradient amplifiers, and a higher resolution digital interface to the existing NMR instrument. The present unshielded magnetic-gradient system is subject to severe eddy- current distortions, which generate artifacts in both localized volume NMR spectroscopy and in short echo-time imaging. In addition, their low field- strength (+/-2 Gauss/cm) prevents high-resolution, small field-of-view imaging. The gradient upgrade will solve both problems. Currently, researchers must devote a substantial portion (often over half) of their allocated NMR instrument time to data analysis, since the CSI is a single user system, and users its computer hardware and software for both acquisition and general purpose computer in the Imaging Research Laboratory. This instrument in the Imaging Research Laboratory constitutes a shared facility whose operations is audited and managed according to University policy.