本文選題：紋理分析 + 磁共振成像�。� 參考：《中國醫(yī)學(xué)影像技術(shù)》2017年07期

【摘要】：目的探討常規(guī)MRI紋理分析在眼眶淋巴瘤和炎性假瘤鑒別診斷中的應(yīng)用價值。方法回顧性分析經(jīng)病理或治療隨訪證實的15例眼眶淋巴瘤及17例炎性假瘤患者的MRI資料。應(yīng)用MaZda軟件手工勾畫ROI,并提取T1WI、脂肪抑制T2WI及脂肪抑制T1WI增強掃描圖像中病變的紋理特征。通過Fisher系數(shù)、分類錯誤概率聯(lián)合平均相關(guān)系數(shù)(POE+ACC)、交互信息(MI)及三者聯(lián)合(FPM)的方法選擇最佳紋理參數(shù)集合。使用線性判別分析(LDA)和非線性判別分析(NDA)進行紋理分類。比較最佳分類序列上兩種病變的紋理特征差異。結(jié)果 T1WI及T2WI最佳紋理參數(shù)主要源于共生矩陣及游程矩陣,增強T1WI最佳紋理參數(shù)主要源于共生矩陣及直方圖。T2WI紋理特征鑒別眼眶淋巴瘤及炎性假瘤能力最佳,其中FPM選擇紋理特征聯(lián)合NDA分類的誤判率最低,為1.56%。眼眶淋巴瘤T2WI紋理特征參數(shù)中的能量及長游程補償均高于炎性假瘤(P均0.005),而熵及短游程補償均低于炎性假瘤(P均0.005)。結(jié)論常規(guī)MR圖像紋理分析可用于鑒別眼眶淋巴瘤和炎性假瘤。
[Abstract]:Objective to evaluate the value of routine MRI texture analysis in differential diagnosis of orbital lymphoma and inflammatory pseudotumor. Methods MRI findings of 15 cases of orbital lymphoma and 17 cases of inflammatory pseudotumor were retrospectively analyzed. MaZda software was used to manually draw ROI and extract T1WI, fat suppression T2WI and fat suppression T1WI to enhance the texture features of the lesions in the scanned images. The best texture parameter set is selected by Fisher coefficient, classification error probability and average correlation coefficient (Poe ACCA) and the combination of the three factors. Linear discriminant analysis (LDA) and nonlinear discriminant analysis (NDA) are used for texture classification. To compare the texture characteristics of the two lesions in the best classification sequence. Results the best texture parameters of T1WI and T2WI were mainly derived from symbiotic matrix and run matrix. The best texture parameters of enhanced T1WI were mainly derived from symbiotic matrix and histogram. T2WI texture features had the best ability to distinguish orbital lymphoma from inflammatory pseudotumor. Among them, FPM selection texture feature and NDA classification have the lowest misjudgment rate (1.56%). In T2WI texture parameters of orbital lymphoma, the compensation of energy and long walk length was higher than that of inflammatory pseudotumor (P 0.005), while the compensation of entropy and short run was lower than that of inflammatory pseudotumor (P 0.005). Conclusion conventional Mr image texture analysis can be used to differentiate orbital lymphoma from inflammatory pseudotumor.
【作者單位】： 上海交通大學(xué)醫(yī)學(xué)院附屬第九人民醫(yī)院放射科;
【分類號】：R445.2;R739.7

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