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作者创用了断层脑血流测定法(xeCT法),即把用氙饱和法测得的结果用CT图象来表示,这样,脑局部血流量、血液分配系数就可能用4mm有层分解能力的断层进行观察了。本法比过去的断层脑血流量测定更进一步。通过局部脑血流、分配系数、放射CT解剖关系的观察,对了解脑肿瘤的病理状态是有重要意义的。作者所观察的对象为22～68岁共15例,其中男9例,女6例。组织分类,星形细胞瘤Ⅰ、Ⅱ级6例,Ⅲ、Ⅳ级者5例,转移癌4例,采用特别固定装置,吸入纯氧10分钟,吸入50%氙25分钟,在吸入氙的过程中每隔3～5分钟用CT行连续扫描,其间测定呼气中的氙、氧、氮及二氧化碳浓度,特别要采集各次扫描后的动脉血放入水槽中行扫描,将扫描得到的连
The authors used tomographic cerebral blood flow assay (xeCT method), that is, the results obtained by xenon saturation method with CT images to represent, so that brain blood flow, blood distribution coefficient may be 4mm layer decomposition The fault was observed. This method goes a step further than past tomographic cerebral blood flow measurements. Through the observation of the regional cerebral blood flow, the distribution coefficient and the radiographic CT anatomy, it is of great significance to understand the pathological state of brain tumors. The authors observed the object of 22 to 68 years old a total of 15 cases, 9 males and 6 females. Tissue classification, astrocytoma grade Ⅰ, Ⅱ 6 cases, Ⅲ, Ⅳ grade in 5 cases, 4 cases of metastatic cancer, using special fixation device, inhaled pure oxygen for 10 minutes, inhaled 50% xenon 25 minutes, during inhalation of xenon In every 3 to 5 minutes with CT line scan continuously during the determination of breath xenon, oxygen, nitrogen and carbon dioxide concentration, in particular, to collect the scan after the arterial blood into the sink line scan, the scanned even