| 关于MRI反转恢复技术中零信号点的研究 |
| |
| 引用本文： | 吉强. 关于MRI反转恢复技术中零信号点的研究[J]. 天津医科大学学报, 2003, 9(2): 203-204 |
| |
| 作者姓名： | 吉强 |
| |
| 作者单位： | 天津医科大学医学影像学系,天津,300203 |
| |
| 摘 要： | 目的：研究核磁共振成像反转恢复技术中零信号点。方法：从理论上对核磁共振成像反转恢复技术进行系统研究，获得零信号点的数学表达式。结果：零信号点的恢复时间T10=T1Ln2/1 e^-Tk/T1。结论：如果所选取的恢复时间T1正好是根据某种组织的弛豫时间Tl、所选取的脉冲序列重复时间TR计算出的T10，则该组织不提供信号，达到抑制信号的目的。相反也可根据需要，选择远离T10以提高信号强度。
|
| 关 键 词： | 核磁共振成像 反转恢复 信号 |
| 文章编号： | 1006-8147(2003)02-0203-02 |
| 修稿时间： | 2003-03-24 |
The research about zero signal point in the MRI inversion recovery technology |
| |
| JI Qiang. The research about zero signal point in the MRI inversion recovery technology[J]. Journal of Tianjin Medical University, 2003, 9(2): 203-204 |
| |
| Authors: | JI Qiang |
| |
| Abstract: | Objective: To study the zero signal point in the MRI inversion recovery technology.Methods:Using the MRI inversion recovery technology systemically in theory and get the mathematical expression of the zero signal point.Results:The recovery time at the zero signal point: .Conclusion: If the recovery time (TI) is just equal toTI0(TR,T1) calculated ,the tissue doesnt provide signal and the purpose to restrain the signal is attained.On the contrary, choose recovery time far from TI0 to improve the intensity of signal to meet the needs. |
| |
| Keywords: | Magnetic resonance imaging Inversion recovery Signal |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
