Methods:To study the MRI inversion recovery technology systemically in theory and get the mathematical expression of recovery time TI0 when the contrast between different tissue is zero.

• 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 ,获得不同组织之间对比度CAB=0时 ,恢复时间TI0 所满足的数学表达式。