高鑫,程敬亮,文宝红,张勇.T2WI全域直方图分析鉴别诊断腮腺多形性腺瘤与腺淋巴瘤[J].中国医学影像技术,2018,34(12):1796~1800
T2WI全域直方图分析鉴别诊断腮腺多形性腺瘤与腺淋巴瘤
Whole-lesion histogram analysis of T2WI in identification of parotid gland pleomorphic adenoma from adenolymphoma
投稿时间:2018-04-06  修订日期:2018-09-17
DOI:10.13929/j.1003-3289.201804034
中文关键词:  腮腺  腺瘤,多形性  腺淋巴瘤  直方图  磁共振成像
英文关键词:Parotid gland  Adenoma, pleomorphic  Adenolymphoma  Histogram  Magnetic resonance imaging
基金项目:河南省医学科技攻关项目(201602085)。
作者单位E-mail
高鑫 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
程敬亮 郑州大学第一附属医院磁共振科, 河南 郑州 450052 cjr.chjl@vip.163.com 
文宝红 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
张勇 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
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中文摘要:
      目的 探讨T2WI全域直方图分析鉴别诊断腮腺多形性腺瘤和腺淋巴瘤的价值。方法 回顾性分析经手术病理证实的68例腮腺肿瘤患者的资料,其中多形性腺瘤35例(多形性腺瘤组)、腺淋巴瘤33例(腺淋巴瘤组)。术前行常规MR扫描,应用MaZda软件于轴位T2WI上肿瘤所有层面沿肿瘤边界勾画ROI,行直方图分析,所获参数包括平均值、方差、偏度、峰度和第1、10、50、90、99百分位数,比较2组间的差异,并绘制ROC曲线,评价各参数鉴别诊断2种肿瘤的价值。结果 多形性腺瘤组与腺淋巴瘤组间平均值、方差、偏度、峰度和第10、50、90、99百分位数差异有统计学意义(P均<0.05),ROC曲线下面积分别为0.769、0.757、0.771、0.776、0.661、0.780、0.781、0.738(P均<0.05)。以平均值鉴别2种肿瘤的敏感度、特异度分别为82.86%和72.73%;方差为72.73%和74.29%;偏度为84.85%和65.71%;峰度为69.70%和74.29%;第10百分位数为60.61%和82.86%;第50百分位数为72.73%和82.86%;第90百分位数为60.61%和94.29%;第99百分位数为85.71%和57.58%。结论 T2WI全域直方图分析鉴别腮腺多形性腺瘤和腺淋巴瘤具有较高价值,其中第50、90百分位数的诊断效能较高。
英文摘要:
      Objective To investigate the value of whole-lesion histogram analysis derived from T2WI in differential diagnosis of parotid gland pleomorphic adenoma from adenolymphoma. Methods Data of 68 patients with parotid tumors confirmed by operation and pathology were retrospectively analyzed, including 35 with pleomorphic adenoma (polymorphic adenoma group) and 33 with adenolymphoma (adenolymphoma group). Routine MR scanning was performed before operation. MaZda software was used to delineate the ROI along tumor boundary at all slices on axial T2WI, and histogram analysis was performed to obtain parameters including mean, variance, skewness, kurtosis, and the 1st, 10th, 50th, 90th and 99th percentiles. The parameters were compared between the two groups, and the ROC curve was drawn to explore the value of each parameter in differential diagnosis of the two tumors. Results The mean, variance, skewness, kurtosis, and the 10th, 50th, 90th and 99th percentiles were statistically significant between the pleomorphic adenoma group and the adenolymphoma group (all P<0.05), with the areas under ROC curve of 0.769, 0.757, 0.771, 0.776, 0.661, 0.780, 0.781 and 0.738 (all P<0.05), respectively. The sensitivity and the specificity of the mean in diagnosis of pleomorphic adenoma from adenolymphoma out were 82.86% and 72.73%, of the variance were 72.73% and 74.29%, of the skewness were 84.85% and 65.71%, of the kurtosis were 69.70% and 74.29%, of the 10th percentile were 60.61% and 82.86%, of the 50th percentile were 72.73% and 82.86%, of the 90th percentile were 60.61% and 94.29%, of the 99th percentile were 85.71% and 57.58%. Conclusion Whole-lesion histogram analysis of T2WI has great value in distinguishing parotid pleomorphic adenoma from adenolymphoma, and the 50th and 90th percentiles have high diagnostic efficacy.
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