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Methods for high-speed measurement of spin-lattice relaxation times

机译:高速测量自旋晶格弛豫时间的方法

摘要

A magnetic resonance system employs a sequence of radio frequency pulses and magnetic field gradients to detect and measure the spin- relaxation time T.sub.1 of a selected portion of a sample. Spin- lattice relaxation times are determined by first inverting longitudinal spin magnetization and then detecting the recovery of this magnetization with a series of detection radio frequency pulses. The inversion pulse is applied to the entire sample, but the detection pulses are applied to selected portions of the sample. Each detection pulse is applied in a unique location of the sample, thereby increasing the accuracy of the measurement and permitting the use of multiple detection pulses after a single inversion pulse.
机译:磁共振系统采用一系列射频脉冲和磁场梯度来检测和测量样品所选部分的自旋弛豫时间T1。通过首先反转纵向自旋磁化强度,然后通过一系列检测射频脉冲检测该磁化强度的恢复,来确定自旋晶格弛豫时间。将反转脉冲施加到整个样本,但是将检测脉冲施加到样本的选定部分。每个检测脉冲都施加在样品的唯一位置,从而提高了测量的准确性,并允许在单个反转脉冲之后使用多个检测脉冲。

著录项

  • 公开/公告号US5387866A

    专利类型

  • 公开/公告日1995-02-07

    原文格式PDF

  • 申请/专利权人 GENERAL ELECTRIC COMPANY;

    申请/专利号US19930105249

  • 发明设计人 CHARLES L. DUMOULIN;

    申请日1993-08-12

  • 分类号G01R33/20;

  • 国家 US

  • 入库时间 2022-08-22 04:05:27

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