基于高分辨率CT图像的肺结节检测

An Algorithm of Nodule Detection Based on High Resolution CT Images

结合二维检测的快速性和三维检测的准确性,提出了一种基于高分辨率CT图像的肺结节自动检测算法,即先用二维收敛度滤波器产生候选肺结节,再用三维Hessian矩阵检测滤波器去除假阳性肺结节。用病理CT数据验证,检测灵敏度达到90%,每层图片的平均假阳性结节数为0.33。

Combining the speed of two-dimensional detection with the precision of three-dimensional detection, an automatic algorithm based on high resolution CT images is proposed to identify nodules in this paper. Nodule candidates are extracted by a two-dimensional convergence index （CI） filter, then a three-dimensional Hessian matrix detection filter is introduced to reduce false positive lung nodules, Experiments show that the algorithm is effective with a sensitivity of 90% and the false positive lung nodules per slice is 0.33.