对PET及SPECT脑显像的局部结果进行定量分析是困难的,因为通常需要选择合适的断层面,画出感兴趣区,然后将左、右两侧计数率的差别进行比较.为了克服上述缺点,作者提出了一种新的方法,此法通过与正常脑断层显像结果的分布情况(包括标准差)进行数字比较来进行定量分析.其包括以下步聚:首先,将各个脑断层切面转变为相应的标准断 It is difficult to quantitatively analyze the local results of PET and SPECT brain imaging because it is usually necessary to select the appropriate slice plane, draw the region of interest, and then compare the difference between the left and right count rates.In order to overcome the above drawbacks , The authors propose a new method of quantitative analysis by digitally comparing the distribution (including standard deviation) of normal brain imaging results with the following gait: First, the various sections of the brain are switched For the corresponding standard off