Comparative studies of the value of 18F-FDG PET and EEG in temporal epilepsy patients

ZHAO Chun-lei; CHEN Zi-qian; LIU Yao; QIAN Gen-nian; YANG Zhong-dong; WANG Kai-tang; LI Ming-shan

Journal of China Clinic Medical Imaging ›› 2012, Vol. 23 ›› Issue (9) : 613-616.

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Comparative studies of the value of 18F-FDG PET and EEG in temporal epilepsy patients

ZHAO Chun-lei1, CHEN Zi-qian1, LIU Yao2, QIAN Gen-nian1，YANG Zhong-dong1, WANG Kai-tang1, LI Ming-shan1

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Abstract

Objective: To prospectively evaluate the efficacy of 18F-FDG PET/CT brain imaging and electroencephalogram(EEG) in preoperative localization of temporal lobe epileptic focus in 62 patients. Methods: Sixty-two patients who were clinically diagnosed as temporal lobe epilepsy and received surgical treatment were prospectively studied. All of those patients underwent interictal PET-CT brain imaging examination and long-range/video EEG examination prior to surgery. The researchers analyzed all the images and test results obtained and compared with postoperative pathology. The diagnostic accuracy between the two methods were compared and analyzed using statistical methods. Results: The rate of accuracy in locating epileptic focus was 67.7%(42/62) for PET/CT brain imaging and 48.4%(30/62) for long-range or video EEG, there was significant difference of accurate localization rate between the two methods(P<0.05). Conclusion: Interictal PET-CT brain imaging is better than long-distance/video EEG examination in preoperative localization of temporal lobe epileptic focus. PET-CT brain imaging is too expensive, so EEG can be used as the preferred method in the clinical application. PET imaging can significantly improve the rate of accuracy in locating epileptic focus when there are difficulties in the localization of temporal lobe epileptic focus with EEG.

Key words

Epilepsy / temporal lobe / Positron-emission tomography / Electroencephalography

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ZHAO Chun-lei;CHEN Zi-qian;LIU Yao;QIAN Gen-nian;YANG Zhong-dong;WANG Kai-tang;LI Ming-shan. Comparative studies of the value of 18F-FDG PET and EEG in temporal epilepsy patients[J]. Journal of China Clinic Medical Imaging. 2012, 23(9): 613-616