三种扫描基线对前连合、后连合平面定位的比较研究

COMPARATIVE STUDY ABOUT CLINICAL SIGNIFICANCE OF THREE SCANNING BASELINES IN BRAIN STEREOTAXY

目的:确认姚氏线作为扫描基线对获得AC-PC平面的临床价值。方法:随机选择各50例次帕金森氏病的立体定向手术,分别以姚氏线、额枕线和与听眦线成向后开放10°角线作为CT定位扫描基线,获取轴位AC-PC平面及目标核团平面影像。结果:姚氏线作为扫描基线的AC-PC平面直接显示率最高(92％),与其它两组有非常显著的差别(P<0.01),并且姚氏线组的手术疗效也优于另两组(P<0.05)。结论:姚氏线为国人理想的CT立体定向定位扫描基线。

Objective To study the significance of Yao's line in brain functional stereotactaxy. Method: 150 stereotaclic thalamotomys and pallidotoniys were divided into three groups based on different scanning baseline, i.e . Yao's line (group A,n = 50) , glabella - occipital line (group B, n = 50)and the line which is backwardly open with an obique angle of 10° to the orbitomeatal line (group C, n = 50) . CT scanning was performed with a continucous series of 2mm slice from those scanning baselines as indicated above to the AC - PC plane and the target plane. Result:The direct showing rate in AP - PC plane in group A is the highest among three groups (p < 0.01) , and the obvious improvement rate of the original symptoms in troup A was higher than those in other two groups (p < 0.05) after surgical operation. Conclusion: Yao's line is an excellent scanning baseline for the Chinese people in the brain functional stereotaxy.