多排螺旋CT及重组技术对肝胆管囊腺瘤的特征分析

The Characteristic Analysis to Hepatobiliary Cystadenoma by Multidetector-row CT and Reconstruction Technique

目的探讨多排螺旋CT及重组技术对肝胆管囊腺瘤的诊断价值,分析其影像特征,以提高肝胆管囊腺瘤的诊断准确率。方法回顾性分析5例经病理证实为肝胆管囊腺瘤的多排螺旋CT平扫及增强影像,并行多平面重组(MPR)、冠状面和矢状面最大密度投影(MIP)及容积再现(VR)图像重组。结果 5例肝胆管囊腺瘤的多排螺旋CT影像均表现为多房囊性病变,囊内有分隔,囊壁光滑,部分囊壁均匀增厚,部分较薄、不规则、呈结节状。增强后囊壁及分隔不同程度强化,延迟期大部呈等密度,其中1例延迟强化。MPR及MIP图像上清晰显示不同角度多房分隔的形态及壁结节形状,VR图像清晰显示门脉血管受压及移位程度。结论肝胆管囊腺瘤的多排螺旋CT影像具有一定的特征性表现,结合动态增强扫描及三维重组图像对诊断有重要价值,提高了和其他肝脏肿瘤的鉴别诊断能力。

Objective To explore the value of Multidetector-row CT and reconstruction technique in hepatobiliary cystadenoma,analyzes the characteristics of image,to improve the diagnostic accuracy.Methods CT scan and enhance materials from 5 cases of hepatobiliary cystadenoma,which proved by surgery and pathology,were retrospectively analyzed.The reconstruction technique included multiple planar reconstruction（MPR）,coronal and sagittal most density projection（MIP） and volume rendering（VR）.Results 5 cases were polycystic form structure tumor,there were space capsule,bursa wall is smooth,part bursa wall thickening,some even thinner,irregular nodules.Capsule wall and septation were enhanced with different extent on contrast scan,delay different degree of the density of most such as cases,enhancement can be seen in delay phase in 1 cases.MPR and MIP image clear display different angles of form and space more room wall nodules shape,VR image clear display portal pressure vessels and shift degree.Conclusion The Multidetector-row CT appearance of hepatobiliary cystadenoma are characteristics,combine with three dimensional reconstruction image and dynamic enhanced,improve the differential diagnosis ability with other liver tumor.