Methods:CT images of 50 cases of healthy old man were sampled randomly and the functional areas of cerebral cortex were identified by superficial sulci and gyri of brain.

• 方法:随机抽取50例健康老年人的CT图像,以大脑表面沟回为标志辨认大脑皮质机能区。结果:大脑表面沟回在健康老年人CT图像上显示清楚,易于辨认。