腭部肿瘤的多排螺旋CT诊断

目的探讨腭部恶性肿瘤的多排螺旋CT（multi-slice spiral CT,MSCT）的检查方法和诊断价值。方法通过调整舌和口腔的位置对28例研究对象进行常规法、伸舌法、抵舌法和发音法MSCT扫描,并进行容积再现、多平面重建、最大密度投影及CT仿真内窥镜重建。结果合理选择常规法、伸舌法、抵舌法和发音法MSCT扫描检查可获得符合诊断的影像图像,18例腭部病变者经MSCT检查发现病变位于软腭10例,硬腭7例,软腭及硬腭交界处1例,MSCT的定位诊断与临床符合率为100%。15例恶性腭部肿瘤的MSCT表现为腭部局限性肿块者15例,腭骨质破坏6例,邻近结构受累及者5例,颈部淋巴结转移4例。3例腭部良性病变者MSCT表现为腭部软组织弥漫性增厚。结论 MSCT有利于显示腭部肿瘤的形态特征以及侵犯途径,并有利于临床治疗和预后评估。

Diagnostic Value of Multi-slice Spiral CT in the Palatal Tumors

Objective To assess the examinational method and diagnostic value of multi-slice spiral CT （MSCT） in palatal tumors. Methods Twenty-eight cases were scanned by MSCT with the conventional method,extending-tongue method,colliding-tongue method and pronouncing method. All reconstructed images were reformed by volume rendering （VR）,multiplanar reconstruction （MPR）,maximum intensity projection （MIP） and CT virtual endoscope （CTVE）.Results The images in accordance with diagnoses could be obtained through the onventional method,extending-tongue method,colliding-tongue method and pronouncing method. The lesions were found to locate in soft palate in 10 cases,in hard palate in 7 cases and in the junction region between soft and hard palates in 1 case through MSCT. The coincidence rate of lesion location between the MSCT and clinic diagnosis was 100%. The main MSCT signs of palatal malignant tumors were as follows：masses in palate in 15 cases,palate bone destruction in 6 cases,involving of the adjacent structures and organs in 5 cases,neck lymph node metastasis in 4 cases. In 3 cases of palatal benign tumors the main MSCT signs were thickened palatal soft tissue.Conclusion MSCT can avail to exhibit the morphological features and the invasion pathway of palatal tumors,and provide the important information for the clinical treatment and prognosis.