基于计算机三维图象技术的失语症病灶空间定位法

LOCATION OF LESIONS IN APHASIA BASED ON 3D RECONSTRUCTION OF CT

首次把计算机三维重建方法应用于失语症的研究中,主要有三方面的工作:(1)建立了一套精细程度较高的标准CT脑图,用三维重建方法建立了标准立体头颅,并用伪彩色显示不同的脑结构和语言区.(2)提出标准化应在三维空间内进行的观点,改进的标准化方法充分利用了CT所能提供的关于脑结构的信息,从而使病灶在每层标准CT脑图上的定位更加准确.(3)对两类临床表现不同但CT显示病灶位置相近的失语症病人共47例进行了研究.通过对标准化之后的病灶的统计处理,得到病灶的集中部位,并对其进行三维重建,在标准立体头颅中显示其空间位置的差别.

This work is the first time to study Aphasia by the method of three-dimensional (3D) reconstruction of CT serial sections. The work includes three parts: (1) On the basis of a microcomputer graphics system, a set of finer standard CT images of brain was established and a standard three dimensional brain was set up. (2) The patients CT images were standardized and reconstructed into 3D structure by the improved method, which can use the information of CT images sufficiently, and give more accurate location of lesions. (3) 47 Aphasia patients of two types of clinical symptoms, but with similar location of brain lesions by CT were investigated. Using the improved standardized and 3D reconstruction method, different locations of lesions of these two types of Aphasia could be observed.