应用DWI鉴别系统性淋巴瘤与淋巴结转移瘤

摘要

目的：研究探讨扩散加权成像在淋巴结转移瘤和系统性淋巴瘤的鉴别中的应用价值与意义。方法选取我院收治的系统性淋巴瘤和淋巴结转移瘤各32例、29例分别进行常规核磁共振成像检查和不同b值下的磁共振扩散加权成像检查，测定患者的病变淋巴结的表观扩散系数值和指数表观扩散系数值，并对测定结果进行比较分析。结果通过对系统性淋巴瘤和淋巴结转移了的在DWI上淋巴瘤和淋巴结转移瘤的不同b值下的CNR进行比较可见，病变淋巴结CNR随b值得升高而降低，但无论b值取最高值还是最低值，其信噪比良好。b值相同的情况下，系统性淋巴瘤的ADC值显著低于淋巴结转移瘤，而eADC值高于后者，数据间均有显著差异，P＜0.05。结论DWI鉴别系统的病变淋巴结的表观扩散系数值和指数表观扩散系数值能够有效区分系统性淋巴瘤和淋巴结转移瘤，选择合适的b值有助于诊断率和鉴别率的提高。%Objective To study investigated diffusion weighted imaging in lymph node metastases and identiifcation of systemic lymphoma application value and signiifcance. Methods In our hospital systemic lymphoma and lymph node metastases of the 32 cases, 29 cases were routine MRI examination under different b-value diffusion-weighted magnetic resonance imaging examination, lesions in patients with lymph node measuring the apparent diffusion coefifcient value and the index of apparent diffusion coefifcient, and the measured results were compared. Results By systemic lymphoma and lymph node metastasis of lymphoma in DWI and lymph node metastases on different b values are compared under the CNR visible lesions lymph CNR decreases with increasing b worth, but whether to take the highest value b value or minimum value, the signal to noise ratio is good. under the same value of b, systemic lymphoma ADC value was signiifcantly lower than node metastases, and eADC value above the latter, there were signiifcant differences between the data, P<0.05. Conclusion DWI lymph node identiifcation system lesions apparent diffusion coefifcient and apparent diffusion coefifcient index can effectively distinguish systemic lymphoma and lymph node metastases, select the appropriate value of b to help diagnosis and differential rate of increase.