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MRI method for determining the signature index of the observation target tissue from the signal pattern obtained by the gradient magnetic field pulse MRI

机译:用于根据由梯度磁场脉冲MRI获得的信号模式确定观察对象组织的特征指标的MRI方法

摘要

A method for determining a signature indicator of a tissue to be observed comprises the steps of: providing a general attenuation model of a gradient magnetic pulse MRI attenuation signal S (b) (12); providing a rence model parameter vector (pR(14) of providing a first (i)). Neutral state attenuation signal SN(16) partial difntial sensitivity dS (b) of the model attenuation signal S (b) for each model parameter p (i)iBased on the change over b value in (b), a discrete small size set of b values of interest is constructed (18) and a series of MRI images of the tissue to be observed is acquired using the b value of interest (20 ). Next, for each voxel, the voxel signal pattern (sADC (V), Sdist (V), SCdist (V), Snl (V), SI (V)) of the voxel V is compared with the voxel signal pattern And the signal pattern of the rence state of the organization with the same b value of interest (22) (22). An apparatus that implements such a method is configured.
机译:一种确定待观察组织的特征指标的方法,包括以下步骤:提供梯度磁脉冲MRI衰减信号S(b)(12)的一般衰减模型;提供一个回归模型参数向量(提供第一个(i)的p R (14))。每个模型参数p(i) i 的模型衰减信号S(b)的中性态衰减信号S N (16)局部差分灵敏度dS(b)在(b)中b值的变化上,构造(18)离散的小尺寸的目标b值集合,并使用目标b值(20)获取要观察的组织的一系列MRI图像。接下来,对于每个体素,将体素V的体素信号图案(sADC(V),Sdist(V),SCdist(V),Snl(V),SI(V))与体素信号图案进行比较,并且将信号具有相同b感兴趣值的组织的服从状态的模式(22)(22)。配置了实现这种方法的设备。

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