表观扩散系数在判断颅内脑膜瘤致密程度的作用

Role of apparent diffusion coefficient for predicting the consistency of intracranial meningiomas

目的探讨最小表观扩散系数(ADC)值与不同部位不同性质脑膜瘤致密程度的相关性,为外科手术方式的选择提供影像学依据。方法回顾分析经外科手术和病理学检查证实为脑膜瘤的23例患者的25个脑膜瘤的常规磁共振影像、扩散加权成像影像(DWI)、ADC图及ADC值,与手术所见和病理学结果进行比较分析。结果致密度高的脑膜瘤的ADC值明显低于致密度低的脑膜瘤的ADC值,脑膜瘤的最低ADC值越低其致密程度越高。结论脑膜瘤致密程度是外科手术需要考虑的一个重要因素,最低ADC值可作为判断脑膜瘤致密程度的临床使用。

Objective To investigate the correlation between minimum apparent diffusion coefficient （ ADC） values and consistency of intracranial meningiomas of different parts and nature, providing radiographic evidence of selection for surgical approach. Methods The routine MRI, diffusion-weighted imaging imaging （DWI）, ADC maps and ADC value of 23 patients （25 cases） who were confirmed as men-ingiomas through surgery and pathology were retrospectively analyzed and compared with the surgical findings and pathology results. Results ADC values in meningiomas with a hard consistency were significantly lower than those with a soft consistency. Meningiomas with low mini-mum ADC were considered to have a hard consistency. Conclusion The consistency of meningiomas is an important factor in developing the strategy of surgical resection and predicting the degree of removal. The minimum ADC value might have clinical use as a predictor of menin-gioma consistency.