1.Based on these projections, the Tomography algorithm is employed to compute the sample's three-dimensional structure. 根据断层成像术(Tomography)算法，利用得到的系列投影像可以重构出样品的三维结构。
2.Methods:Cranial computer tomography(CT)and transcranial Doppler(TCD)were performed in 38 patients. 方法：采用头颅CT 影像技术及经颅多普勒(TCD) 技术对38 例患者分别进行两项检测。 |
