| 王克扬,贺文,何茜,王涛,赵丽琴,李晓强,李晨,李辉,肖国文.胸部DR影像后处理对肺结节检出的影响[J].中国医学影像技术,2007,23(11):1727~1729 |
| 胸部DR影像后处理对肺结节检出的影响 |
| Effect of image processing in digital chest radiographon pulmonary nodules detection |
| 投稿时间：2007-05-12 修订日期：2007-08-12 |
| DOI： |
| 中文关键词: 数字化放射影像 图像后处理 多频域后处理 肺结节 ROC曲线 |
| 英文关键词:Digital radiography Image processing Multiscale processing Pulmonary nodule Receiver operating characteristic curve |
| 基金项目: |
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| 中文摘要: |
| 目的 评价DR影像多频域后处理方式对肺内结节检出的影响。 方法 选取经胸部CT证实的50例有肺内结节和50例正常者的DR正位胸片,采用多频域后处理得到标准、高通过及低通过3组图像,由低、中、高年资医师各2名进行评价,评价结果用受试着工作特征(ROC)曲线进行统计分析。 结果 标准、高通过及低通过3组图像ROC曲线下面积分别为0.739±0.019、0.697±0.020、0.789±0.017(P＜0.05),三组中,低通过组结节检出率最高,高通过组结节检出率最低、假阴性率最高,标准组假阳性率最高。 结论 DR影像多频域后处理对肺结节的检出有影响,低频增强处理可以提高肺结节的检出率,高频增强处理漏诊率增加。 |
| 英文摘要: |
| [Abstract] Objective To evaluate the effect of multiscale processing in digital chest radiography on pulmonary nodules detection. Methods Fifty normal cases and fifty small nodule patient cases confirmed by chest CT were selected. Each case had been taken a chest radiograph obtained with a digital radiography system, and the acquired image was processed by three types of multiscale processing with different structure preference values. Three groups of different experienced radiologists independently reviewed and recorded the Results of pulmonary nodules detection. All observations were evaluated by the receiver operating characteristic (ROC) analysis. Results The mean area under the ROC curve values of default images, high-pass images and low-pass images were 0.739±0.019, 0.697±0.020, 0.789±0.017 (P＜0.05), respectively. Among the three kinds of different processing images, the Az value of low-pass was highest. The high-pass images had the lowest Az value and highest false negative rate, and the false positive rate of default images was highest. Conclusion Multiscale processing in digital chest radiography affects the pulmonary nodules detection. The low-pass processing increased the relevance rate of the pulmonary nodules detection, while the high-pass processing increased the omission rate. Digital radiography; Image processing; Multiscale processing; Pulmonary nodule; Receiver operating characteristic curve |
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