16层螺旋CT鼻窦区冠状位重组图像与扫描图像的对比研究

Comparative study of paranasai sinus between 16-slice spiral CT coronary reforming images and scanning images

目的对比分析16层螺旋CT不同扫描方法以及不同重建算法对鼻窦区解剖结构的显示。方法将56例鼻窦扫描患者分为正常组（34例）与炎症组（22例）。每组患者根据扫描方法不同分为轴位扫描冠状位重组组和直接冠状位扫描组,均用软组织算法重建。选取其中正常组18例、炎症组16例同时行高分辨率算法重建。评价不同扫描方法、不同重建算法时的图像质量。结果两组中冠状位重组图像与直接冠状位扫描图像的图像质量差异均无统计学意义。正常组中,高分辨率重建算法的图像质量均高于软组织重建算法,差异有统计学意义;炎症组中,高分辨率重建算法与软组织重建算法的图像质量的差异无统计学意义。结论利用16层螺旋CT轴位扫描图像并进行冠状位重组,所得信息明显优于只对患者进行一次冠状位扫描,且高分辨算法对正常组细小结构的显示优于软组织算法。

Objective To explore the effect of different scanning methods and different constructive arithmetic on displaying the anatomy of ostiomeatal complex （OMC）. Methods Fifty-six patients undergoing paranasal sinus CT were divided into normal group （34 cases） and inflammation group （22 cases）. According to scanning methods, all the cases reconstructed with soft tissue arithmetic were divided into coronary reforming group and coronary scanning group. Among 56 cases, 18 normal cases and 16 inflammation cases were reconstructed using high resolution arithmetic simultaneously. The imaging quality of OMC was assessed with different scanning methods and different constructive arithmetic. Results There are no significant difference between coronary reforming images and coronary scanning images in two groups. There are significant difference between high resolution arithmetic and soft tissue arithmetic in normal group, but not in inflammation group. Conclusions The information of axial images and coronary reforming images with 16-slice CT is superior to coronary scanning images on displaying the anatomy of OMC. High resolution arithmetic is better in displaying the tiny structure of OMC than soft tissue arithmetic in normal group.