目的:探讨腮腺造影后锥形束CT(CBCT)在慢性腮腺炎诊断中的应用.方法:对20例可疑慢性腮腺炎症的患者行腮腺造影术后进行CBCT检查,对多平面重建(MPR)横断面、冠状面、矢状面及三维重建图像进行分析.结果:MPR横断面、冠状面、矢状面和三维重建图像均可以从任意方向显示腺体和导管,6例慢性复发性腮腺炎腮腺造影CBCT表现为腺体实质内末梢导管呈现大量点球状扩张为特征,其中4例主导管系统未见异常,2例呈现管炎表现;14例慢性阻塞性腮腺炎腮腺造影CBCT表现为主导管不规则扩张及狭窄,3例出现腺体内“点扩”,2例查及阴性涎石.结论:腮腺造影CBCT检查能清晰立体地显示腮腺导管系统和腺体影像,可以作为临床检查慢性腮腺炎的有效方法,对指导临床治疗有重要意义.%Objective:To explore the value of cone beam CT(CBCT) scanning following parotid sialography in the diagnosis of chronic parotitis.Methods:20 cases of suspected chronic parotitis patients underwent parotid gland sialography followed by CBCT scanning.The images were observed by transverse plane,coronal plane,sagittal plane of multiplanar reconstruction (MPR) and 3D reconstruction.Results:The acinus and ducts system of parotid were clearly displayed from any orientation by MPR and 3D-reconstructed images.The images of 6 cases of chronic recurrent parotitis in CBCT sialography were charactered by punctiform dilatation in whole parotid gland,4 of them showed a normal ductal system,while 2 exhibited expression of ductal inflammation.The images of 14 cases of chronic obstructive parotitis showed irregular ductal dilatations and stenosis.Punctiform dilatations were found in 2 cases,and small filling defects (negative salivary calculi) in 3 cases.Conclusion:CBCT sialography is an effective clinical examination for the diagnosis and treatment chronic parotitis.
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