【摘要】 目的为了更好地区分内耳精细的解剖结构,借助于数字图像处理的方法对内耳CT图像进行后处理使其进一步改善图像细节的显示能力,提高CT图像的质量。方法对40幅内耳CT图像,用小波变换的方法来估计CT成像系统的点扩散函数的参数,再用期望最大化迭代图像复原方法对CT图像进行复原。结果处理前后图像进行比较,有明显差异。结论实验表明,应用这种复原算法对CT图像进行复原处理作用于Gaussian模糊是有效的,内耳CT图像经处理后可更清楚的显示内耳重要细节,获得客观准确的影像学信息。更多还原

【Abstract】 Objective:To improve the spiral CT image quality in discriminating fine anatomical features in inner ears with the aid of digital image processing techniques.Methods:Wavelet transform was applied to estimate the point spread function of the imaging system,and then expectation-maximization algorithm was used to restore temporal CT images.Re- sults:By comparing original images with images processed,the inner image quality has been improved.Conclusion:The results show that this method can reduce blur and improve image quality of CT images.更多还原