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MRI及1 H-MRS在癫痫 患者海马硬化诊断 中的应用价值

作者:张志强 杨明贵 王 东

所属单位:河南省南阳市南阳南石医院医学影 像科 (河南 南阳 473065)

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摘要

目的 探讨常规磁共振成像(MRI) 和氢质子磁共振波谱成像(1 H-MRS)在癫痫 海马硬化中的诊断价值。方法 选取2016 年2月至2017年11月在我院治疗的癫痫患 者50例,行常规MRI扫描、液体衰减反转 恢复序列(FLAIR)、T2W-FLAIR序列、GMonly序列及1 H-MRS扫描。结果 MRI检出异 常者共29例,检出率为58.00%,准确定位 率为68.97%;1 H-MRS检出异常者41例,检 出率为82.00%,准确定位率为90.24%, 1 H-MRS检出率和定位准确率明显高于 MRI(P<0.05);患侧海马NAA/(Cho+Cr)、 NAA/Cr和NAA/Cho分别为(0.44±0.12)、 (0.92±0.30)和(1.00±0.53),明显 低于对侧海马(P<0.05);患侧和对侧 海马Cho/Cr比较差异无统计学意义(P> 0.05)。结论 MRI和1 H-MRS在癫痫患者海 马硬化诊断中有较好的应用价值,其中 1 H-MRS检出率和定位准确率较高,可定量 分析患者脑组织生化代谢异常。

Objective To explore the value of conventional magnetic resonance imaging (MRI) and hydrogen proton magnetic resonance spectroscopy (1 H-MRS) in the diagnosis of hippocampal sclerosis in epileptic patients. Methods A total of 50 cases of epileptic patients who were treated in our hospital from February 2016 to November 2017 were selected, the routine MRI scan, fluid attenuated inversion recovery sequence (FLAIR), T2W-FLAIR sequence, GM-only sequence and 1 H-MRS scan were performed. Results A total of 29 cases of abnormal were detected by MRI, the detection rate was 58% and the accurate location rate was 68.97%. 41 cases of abnormal were detected by 1 H-MRS, the detection rate was 82.00%, the accurate location rate was 90.24%, and the detection rate and location accuracy of 1 H-MRS were significantly higher than that of the MRI (P<0.05). The NAA/(Cho+Cr), NAA/Cr and NAA/Cho in the affected side of the hippocampus were (0.44±0.12), (0.92±0.30) and (1.00±0.53), which were significantly lower than those in the contralateral hippocampus (P<0.05). There was no statistically significant difference in Cho/Cr between the affected side and the contralateral hippocampus (P>0.05). Conclusion MRI and 1 H-MRS has good application value in the diagnosis of hippocampal sclerosis in epileptic patients, of which 1 H-MRS detection rate and location accuracy rate are relatively high, which can quantitatively analyze brain tissue biochemical metabolism abnormalities.

【关键词】磁共振成像;氢质子磁共振波 谱;癫痫;海马硬化

【中图分类号】R742.1

【文献标识码】A

【DOI】 10.3969/j.issn.1672- 5131.2019.01.003

前言

癫痫是一种慢性反复发作的短暂脑功能失调现象,其主要特征为 脑神经元异常放电,进而引起反复痫性的一类神经系统常见疾病,患 病率仅次于脑卒中[1]。癫痫的发病率与年龄有关,在1岁内患病率较 高,在各种族中患病率无明显差异[2]。患者主要表现为全身肌肉抽动 及意识丧失,运动、感觉、自主神经、精神症状及体征异常,癫痫的 治疗主要包括控制发作、病因治疗、外科治疗、一般卫生及预防五个 方面,目前以药物治疗为主[3]。本研究选取在我院治疗的癫痫患者, 对所有患者采取常规MRI扫描、液体衰减反转恢复序列(FLAIR)、T2WFLAIR序列、GM-only序列及1 H-MRS扫描,探讨各类检测方法在癫痫患者 海马硬化诊断中的诊断结果,现报告如下。