PET在小儿癫痫定位诊断上的应用

目的　评价PET在小儿癫痫定位诊断中的应用价值。方法　对 2 0例小儿癫痫分别进行 18F FDGPET、EEG和MRI检查 ,并对其定位诊断阳性率进行比较。结果　PET显像阳性率 90 % ,其中低代谢灶 7例 ,高代谢灶 10例 ,低代谢灶和高代谢灶共存 1例。EEG检查阳性率 80 % ,在病灶诊断上与PET检查完全一致和部分一致占 70 % ,完全不一致 3 0 %。MRI检查阳性率 3 8.89% ,与PET检查完全一致占 16.67% ,完全不一致占 83 .3 3 %。PET、EEG与MRI比较完全一致和部分一致占 16.67% ,完全不一致占 83 .3 3 %。结论　PET显像对小儿癫痫病灶的探测敏感性高于EEG、MRI。

The Use of Locating Diagnosis of PET in Children with Epilepsy

Objective To evaluate the significance of PET in locating diagnosis of epilepsy in children. Methods Twenty children undergone PET, EEG and MRI were analyzed and compared with positive rate in locating diagnosis of epilepsy. Results PET positive rate was 90%, with low metabolic foci in 7 cases, high metabolic foci in 10 cases, and both in 1 case. EEG positive rate was 80%, complete and partial consistency with PET was 70% in foci locating diagnosis, complete inconsistency was 30%. MRI positive rate was 38.89%, complete consistency with PET was 16.67%, complete inconsistency 83.33%. Complete and partial consistency for PET, EEG, and MRI is 16.67%, complete inconsistency 83.33%. Conclusion PET imaging is more sensitive than EEG and MRI in locating diagnosis of epileptic foci of children.