摘要
目的:评价腮腺肿瘤双期相CT增强衰减和强化模式,预测腮腺常见良性肿瘤的组织学亚型。方法:选取医院收治的122例经手术病理证实的腮腺肿瘤患者资料,按照肿瘤性质将其分为多形性腺瘤(PA)组(59例)、Warthin瘤(WT)组(55例)和基底细胞腺瘤(BCA)组(8例)。所有患者均行双期CT扫描,扫描延迟时间分别为40 s和80 s,分析3组肿块的形态学特征,测量平扫和增强双期CT衰减值。通过测量各期相CT值,计算CT衰减增值,对所有肿瘤的增强模式进行分析。结果:注射对比剂后,3组肿瘤增强程度从高到低依次为BCA组、WT组和PA组;WT组为速升速降,PA组为轻度延迟强化,BCA组为速升缓变,3组强化模式不同,平扫CT衰减值(AP)、动脉期CT衰减值(AA)和静脉期CT衰减值(AV)比较差异有统计学意义(F=5.409,F=47.467,F=9.525;P<0.05);3组动脉期CT衰减值的增值(AAI)、静脉期CT衰减值的增值(AVI)和动静脉期CT衰减值增值(AWO)比较差异有统计学意义(F=35.219,F=21.784,F=79.875;P<0.05)。结论:在腮腺肿瘤的诊断及鉴别诊断中,双期相CT能为其定性诊断提供较多依据,增强扫描具有重要价值。
Objective:To evaluate attenuation and intensity mode of contrast-enhanced two–phase computed tomography(CT)on parotid gland tumor and to predict the histological subtypes of common benign tumor of parotid gland.Methods:The data of 122 patients with parotid tumors who were confirmed by operation and pathology were divided into pleomorphic adenoma(PA)group(n=59),Warthin tumor(WT)group(n=55)and basal cell adenoma(BCA)group(n=8)as the property of tumor.All patients underwent two-phase CT scan with a delay time of 40 s and 80 s,respectively.The morphological characteristics of the masses in the three groups were analyzed,and the attenuation values of plain scan and enhanced two-phase CT were measured.The enhancement modes of all tumors were analyzed through measured the CT value of various phase and calculated the added value of CT attenuation.Results:After contrast mediums were injected,the sequence of enhancement degrees of the tumors of 3 groups was BCA group,WT group and PA group,successively.The enhancement modes of 3 groups were different,and WT group was rapid increase and decrease,and PA group was mildly delayed enhancement,and BCA group was rapid increase and gradual change.And the differences of attenuation values of plain scan CT(Ap),arterial phase CT(AA)and venous phase CT(Av)among 3 groups were significant(F=5.409,F=47.467,F=9.525,P<0.05).And the differences of the increase values of attenuation values of arterial phase CT(AAI),venous phase CT(AVI)and arteriovenous phase CT(AWO)among 3 groups were significant(F=35.219,F=21.784,F=79.875,P<0.05).Conclusion:The appearances of CT on common benign tumors of parotid gland have certain characteristics,and enhanced scanning has great value.
作者
申娜
常俊琦
田晓娟
岳华杰
乔英
SHEN Na;CHANG Jun-qi;TIAN Xiao-juan(Department of Medical Imaging,Shanxi Medical University,Taiyuan 030001,China;不详)
出处
《中国医学装备》
2020年第10期45-49,共5页
China Medical Equipment
基金
工业和信息化部办公厅国家卫生健康委办公厅先进医疗装备应用示范项目(第二批)(2018MND102006)“X射线计算机断层摄影装备(CT)应用示范项目”。
关键词
腮腺肿瘤
计算机断层扫描(CT)
双期相CT
增强扫描
Parotid gland tumor
Computed tomography(CT)
Contrast-enhanced two-phase CT
Contrast-enhanced scanning
