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磁共振波谱分析在颞叶癫痫的临床应用价值 被引量:4

Clinical value of ^1H-magnetic resonance spectroscopy on temporal lobe epilepsy
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摘要 目的评价氢质子磁共振波谱(^1HMRS)分析在颞叶癫痫(TLE)病灶术前评定中的价值。方法对45例手术证实为单侧TLE患者的单体素^1HMRS数据进行回顾性分析,并以日常检查中随机的14例健康志愿者为对照,计算代谢产物氮-乙酰天门冬氨酸(NAA)、肌酸(Cr)、胆碱复合物(Cho)、NAA/Cr、NAA/Cho、NAA/(Cr+Cho)的值,比较患者病变组与对侧组、病变组与对照组之间有否差异。结果患者病变组中NAA为(52.31±12.78)ppm,Cr为(40.36±8.06)ppm,Cho为(42.78±10.43)ppm,NAA/Cr为(1.29±0.15),NAA/Cho为(1.24±0.14),NAA/(Cr+Cho)为(0.63±0.05),对侧组分别为(58.04±13.25)ppm、(40.49±10.02)ppm、(42.42±10.68)ppm、(1.45±0.16)、(1.39±0.13)、(0.70±0.05);对照组分别为(59.86±11.28)ppm、(39.00±7.10)ppm、(40.43±6.61)ppm、(1.55±0.19)、(1.49±0.12)、(0.76±0.06);病变组NAA、NAA/Cr、NAA/Cho、NAA/(Cr+Cho)较对侧组及对照组明显降低(P〈0.05);cr值和Cho值差异不明显(P〉0.05),以NAA/(Cr+Cho)比值为参考值最可靠(CV在7.04%-7.93%)。NAA/(Cr+Cho)值取0.65,病变侧与对侧间差值取0.07为标准,对病变定侧诊断的准确率为86.67%,特异性为100%。结论’HMRS分析能够无创地定量反映颞叶生化代谢异常,是TLE患者术前评价的一种有用的辅助检查方法。 Objective To evaluate the value of preoperative lateralized ^1H-magnetic resonance spectroscopy (^1HMRS) on temporal lobe epilepsy (TLE). Methods ^1HMRS of 45 patients with unilateral TLE confirmed surgically and pathologically were retrospectively analyzed, and 10 patients without systemic disease and neurological symptoms served as control. The N-Acetyl L-Aspartic acid (NAA), Creatine (Cr), Choline (Cho), NAA/Cr, NAA/Cho, NAA/( Cr + Cho) were calculated respectively and compared among the lesion group, the contralateral group and control group. Results NAA, Cr, Cho, NAA/Cr, NAA/Cho, NAA/(Cr +Cho) were, respectively, (52.31 ±12.78) ppm, (40.36±8.06) ppm, (42.78±10.43) ppm, (1.29 ± 0.15), (1.24±0. 14) and (0.63±0.05) for the lesion group, and (58.04±13.25) ppm, (40.49± 10.02) ppm, (42.42±10.68) ppm, (1.45±0. 16), (1.39±0. 13), (0.70±0.05) for contralateral group, and (59.86 ±11.28) ppm, (39.00 ±7.10) ppm, (40.43 ±6.61) ppm, (1.55±0.19), (1.49±0.12) , (0.76 ±0.06) for control group. There was significant difference in NAA, NAA/Cr, NAA/Cho, NAA/( Cr + Cho) between hemispheres with and without lesions ( P 〈 0.05 ). The coefficient of variation of NAA/( Cr + Cho) ranged from 7.04% to 7.93% , and the diagnostic accuracy rate and specificity was 86.67% and 100% respectively when NAA/( Cr + Cho) ratio was 0. 65 and the margin was O. 07. Conclusion ^1HMRS can quantify biochemical metabolic disorders of temporal lobe and is a complementary modality for evaluating TLE.
出处 《第三军医大学学报》 CAS CSCD 北大核心 2008年第20期1883-1885,共3页 Journal of Third Military Medical University
关键词 磁共振波谱 癫痫 颞叶 诊断 magnetic resonance spectroscopy epilepsy brain temporal lobe diagnosis
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