基于CT影像的额筛气房三维可视化重建研究

Three-dimensional reconstruction and visualization of the fronto-ethmoidal cells based on CT images

目的:基于鼻窦CT轴位断面连续影像,利用Intage Realia 2011软件对额筛气房进行三维可视化重建,为准确理解额筛气房解剖结构提供模型。方法:对50例进行鼻部CT扫描的无鼻窦炎患者的资料进行回顾分析,采用鼻窦CT轴位扫描DICOM图像,利用Intage Realia 2011软件在个人计算机上分别采用Achilles tendon模式和Nasal passage模式进行鼻窦三维可视化重建,对重建后的鼻窦进行二次分割,对鼻丘、额气房、眶上气房的结构,额窦引流通道与气房的相对位置关系进行观察。结果:成功重建了三维可视化的额筛气房、额窦引流通道,可以准确观察额筛气房的解剖特点。结论:基于鼻窦CT轴位断面连续影像可以对额筛气房进行三维可视化重建,为准确理解额筛气房解剖结构及制定额窦手术规划奠定基础。

Objective：Based on contiguous axial computed tomography（CT）images of the frontal sinus,a three-dimensional（3D）visualization and reconstruction of fronto-ethmoidal cells was performed using Intage Realia（version 2011）software to generate a model to accurately understand the anatomical structure of fronto-ethmoidal cells.Method：Retrospective analyses of nose CT scan data of 50 patients without sinusitis were performed.Using Digital Imaging and Communications in Medicine（DICOM）images of sinus axial CT scans,the 3Dvisualization and reconstruction of the sinus was performed using the Achilles tendon and nasal passage modes in Intage Realia（version 2011）software on personal computers.Two segmentations were performed on the reconstructed sinus,and the structures of the agger nasi,frontal cells,and supraorbital cells and the relative locations of the frontal sinus drainage pathway and cells were observed.Result：The 3Dvisualization of the fronto-ethmoidal cells and frontal sinus drainage pathway was successful,allowing accurate observation of the anatomical characteristics of the fronto-ethmoidal cells.Conclusion：The 3Dvisualization of fronto-ethmoidal cells can be reconstructed based on contiguous axial CT images of the sinus,allowing an accurate understanding of the anatomical structure of frontoethmoidal cells and is well prepared for frontal sinus surgeries.