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目的:通过对获得的额隐窝区域的CT影像学数据进行三维重构,力求对于该区域重要的解剖结构进行客观、真实的再现。方法:选择接受鼻窦检查的5例患者,对其头部行多排螺旋CT扫描(螺距1mm,扫描层厚2mm,层距-1mm),然后在图像工作站上进行三维图像重建,并形成3D模型。观察该模型上鼻丘气房、额气房、眶上气房、额泡气房等解剖标志的形态、相对空间排列以及其相应的引流途径,并对额窦和鼻腔气房的几何尺寸以及两者之间的空间距离进行精确测量。结果:经过上述处理得到非常接近真实状态的鼻腔-鼻窦气房结构模型,在其额隐窝部位可以清晰地辨识出鼻丘气房、额气房等重要结构,并对所有患者额窦、鼻丘气房以及两者之间的垂直距离做了较为精确的测量。结论:借助三维重建技术可以得到鼻腔-鼻窦内气房3D结构模型;同时可对其中的重要结构进行空间定位,并对其相互之间的距离进行精确测量,为手术提供了可靠指导。
OBJECTIVE: To reconstruct the three-dimensional CT images of the frontal crypt area objectively and truthfully, and to seek the important anatomical structures in this area. Methods: Five patients who underwent nasal sinus surgery were screened by multi-slice spiral CT (pitch 1mm, thickness of scan layer 2mm, layer thickness -1mm) on the head. Then the three-dimensional images were reconstructed on the image workstation and a 3D model . Observe the morphological and relative spatial arrangement of the nasal cavity, frontal air chamber, supraorbital atrium, frontal foramina and other anatomical landmarks on the model and the corresponding drainage ways. The geometric dimensions of frontal and nasal atrium, Accurate measurement of the spatial distance between the two. Results: After the above-mentioned treatment, the nasal-sinonasal air-space structure model was obtained which was very close to the true state. The nasal cavity and anterior chamber were clearly identified in the frontal crypt, and the frontal sinus, Room and the vertical distance between the two made a more accurate measurement. CONCLUSION: The 3D reconstruction model of nasal cavity and nasal cavity can be obtained by 3D reconstruction technique. At the same time, the spatial structure of the nasal cavity and the nasal cavity in the nasal cavity can be obtained. The accurate measurement of the distance between them can provide a reliable guide for surgery.