尸体侧脑室容量的CT、体视学法与铸型测定的对照研究

Contrast study of lateral ventricular volume with quantitative measurement of CT, stereology and cast of lateral ventricles

目的：探讨ＣＴ部分容积分析法（ＰＶＡ法）、体视学法定量测定侧脑室容量的准确性。方法：对１３例尸体颅脑ＣＴ扫描，用ＣＴ、ＰＶＡ法、体视学法分别定量测定侧脑室容量，然后对尸体侧脑室铸型测定侧脑室容量，将数据进行统计学处理。结果：ＣＴ、ＰＶＡ法、体视学法、侧脑室铸型所测的侧脑室容量方差分析表明无显著性差异，Ｐ＞００５。结论：ＣＴ、ＰＶＡ法、体视学法都是侧脑室容量定量测定的有效方法，体视学法是断层扫描图像测定侧脑室容量的简便可靠方法。

Objective: To evaluate the accuracy of the methods of CT partial volume analysis and stereology in quantitative measurement of lateral ventricular volumes. Methods: 13 cadaver heads were scanned with CT, and the casts of the lateral ventricles were made simultaneously. The volumes of casts were compared with those of the lateral ventricles measured with CT partial volume analysis and stereological technique. The data were processed by statistics with statistical analysis system (SAS) version 604. Results: There was no significant difference among the volumes of lateral ventricles measured by casting, CT partial volume analysis or stereological method. Conclusion: Both CT partial volume analysis and stereological method are effective for quantitative measurement of lateral ventricles, thus they may be used in clinical practice with a theoretical base.