| 吕增波,郭大静,陈婷,张瑜,赵建农.扩散加权成像在诊断静脉性脑梗死及随访中的应用[J].中国医学影像技术,2011,27(2):277~280 |
| 扩散加权成像在诊断静脉性脑梗死及随访中的应用 |
| Application of diffusion weighted imaging in diagnosis and following-up of cerebral venous infarction |
| 投稿时间：2010-09-29 修订日期：2010-10-26 |
| DOI： |
| 中文关键词: 脑梗死 扩散磁共振成像 随访研究 |
| 英文关键词:Brain infarction Diffusion magnetic resonance imaging Follow-up studies |
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| 中文摘要: |
| 目的 探讨扩散加权成像(DWI)在静脉性脑梗死(CVI)诊断及随访中的应用价值。方法 收集经临床及影像学检查证实的CVI患者15例,对所有患者于治疗前、后行常规MR、对比增强磁共振静脉显像(CE-MRV)和DWI检查,分析CVI的DWI表现及其演变规律。结果 常规MRI和DWI共发现15例患者26个CVI病灶。治疗前DWI表现为高信号病灶8个,稍高信号13个,混杂信号3个,等信号2个,治疗后DWI表现为高信号病灶2个,稍高信号6个,混杂信号4个,等信号14个,治疗前、治疗后DWI信号差异有统计学意义(P＜0.05)。治疗前表观扩散系数(ADC)值为(5.09±2.04)×10-4 mm2/s,治疗后ADC值为(6.25±0.76)×10-4 mm2/s(t=-2.72,P＜0.05)。结论 DWI能够早期发现CVI病灶,判断脑水肿的性质。DWI结合常规MRI和CE-MRV在CVI的诊断及其随访中有重要临床价值。 |
| 英文摘要: |
| Objective To explore the value of diffusion weighted imaging (DWI) in the diagnosis and following-up of cerebral venous infarction (CVI). Methods Fifteen patients with clinically or radiologically proved CVI underwent conventional MRI, contrast enhanced magnetic resonance venography (CE-MRV) and DWI before and after treatment. The DWI findings and changes during following-up were analyzed. Results Twenty-six lesions were detected in 15 patients with conventional MRI and DWI. DWI showed hyperintensity (8 lesions), mild hyerintensity (13 lesions), mixed intensity (3 lesions) and isointensity (2 lesions) before treatment, while hyperintensity (2 lesions), slightly hyerintensity (6 lesions), mixed intensity (4 lesions) and isointensity (14 lesions) after treatment. The difference of signal intensity on DWI had statistical significance (P＜0.05) before and after treatment. The ADC values were (5.09±2.04)×10-4 mm2/s before treatment and (6.25±0.76)×10-4 mm2/s after treatment (t=-2.72, P＜0.05). Conclusion DWI can demonstrate CVI early, define the type of edema, therefore has important clinical value in the diagnosis and following-up of CVI combined with conventional MRI and CE-MRV. |
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