基于超声图像分析的肝癌射频治疗效果定量评价  

The Ultrasound Image Based Quantitative Evaluation on the Effects of Radiofrequency Treatment for the Liver Cancer

作　　者：高嵩[1] 赵林[1] 邱天爽[1] 刘颖[2] 肖新华[1] 

机构地区：[1]大连理工大学电子与信息工程学院,大连116024 [2]大连医科大学附属第二医院,大连116023

出　　处：《中国生物医学工程学报》2009年第3期332-337,共6页Chinese Journal of Biomedical Engineering

基　　金：国家自然科学基金资助项目(60872122,30570474);大连理工大学大学生创新性实验计划项目

摘　　要：医学超声图像对于肝癌射频治疗后的评估具有重要作用。作为一种"姑息性"疗法,射频治疗不能保证肿瘤生长部位经治疗后没有癌细胞残留。为了使医生能够准确地评估肝癌射频治疗后的效果,需要建立一种定量评价体系。采用Gabor变换提取图像纹理特征,计算各阶段图像的特征距离,并采用特征距离的立方对图像矩阵的2范数加权,从而构造出肝癌射频治疗后复查的定量评价体系。该定量评价体系与病理检查结果相一致,对于辅助医生更加准确地评估出肝癌射频治疗后的效果具有潜在的应用价值。Medical ultrasound images are of great importance in evaluating the radiofrequency treatment of liver cancer. As a kind of palliative therapy, radiofrequency treatment itself can not make sure if there are no residuary cancer cells after the treatment. A quantitative evaluation method was established in this paper. Gabor transform was used to extract texture features of the images, and feature-distance of each stage was calculated. Then a quantitative evaluation system was established using the cube of feature-distance to weight the 2-norm of image matrix. The testing results were consistent with that from the pathological tests. This kind of quantitative evaluation has great potential value in helping the doctors evaluate the effects of radiofrequeney treatment more accurately.

关 键 词：射频治疗 超声图像 GABOR变换 矩阵2范数 定量评价 

分 类 号：R318[医药卫生—生物医学工程]