Mean and variation in relative perfusion parameters.

The means, standard deviations (sB), and P-values of the parameters, compared between slice thicknesses (repeated measures ANOVA). The parameters are subsequently relative cerebral blood volume (rCBV, in %), relative cerebral blood flow (rCBF, in %), difference in mean transit time (dMTT, in s), and relative permeability-surface area (rPS, in %). The sB is the standard deviation on a parameter due to the difference between slice thicknesses, disregarding the variation due to the difference between patients. A parameter with a P-value P-values Mean and variation in relative perfusion parameters.本数据集针对不同扫描层厚间的各项参数采用重复测量方差分析（repeated measures ANOVA）开展对比，统计指标涵盖参数均值、标准差（sB）与P值。本次分析涉及的参数依次为相对脑血容量（relative cerebral blood volume, rCBV，单位：%）、相对脑血流量（relative cerebral blood flow, rCBF，单位：%）、平均通过时间差（difference in mean transit time, dMTT，单位：s）以及相对通透表面积（relative permeability-surface area, rPS，单位：%）。其中sB指代仅由扫描层厚差异引发的参数标准差，不考虑患者个体差异带来的变异。带有P值的参数与相对灌注参数的均值及变异情况相关。