基于区域分割的DSA图像伪彩色处理技术的研究及应用

目的通过基于区域分割的DSA图像伪彩色处理系统，对心脏冠状动脉DSA图像进行处理，对比分析处理前后的图像质量，评价基于区域分割的DSA图像伪彩色处理系统在临床的应用价值。方法采用分水岭算法进行DSA血管图像区域分割，应用彩虹码做为伪彩色编码，以VB和Matlab做为开发平台，设计和开发DSA血管图像伪彩色处理系统，通过该系统对30例心脏冠状动脉DSA图像进行处理，对比分析处理前后的图像质量。结果30例图像经处理后有24例图像质量明显提高，4例有改善，有效率为93．33％。结论基于区域分割的DSA图像伪彩色处理系统能有效提高心脏冠状动脉DSA图像质量，且减少对比剂用量和曝光次数。

Regionally division-based DSA pseudo-color image processing technology and its application

Objective:To process the DSA coronary heart images through the regionally division-based DSA pseudo- color image processing system,to compare and analyze the image quality in the pre-and the post-processing,and evalu- ate the clinical application of the regionally division-based DSA pseudo-color image processing system.Methods:The DSA vascular imaging regional division was made through watershed algorithm,with the rainbow color codes for the pseudo -color codes,and VB and Matlab as a development platform,the vascular DSA pseudo-color image processing system was designed and developed,and the pre-and post-processing image quality of 30 cases was compared and analyzed in the coronary heart DSA image processing.Results:Of the 30 cases of the images processed,the quality of 24 images was significantly improved,that of the 4 cases was also improved,and the effective rate was 93.33%.Conclusion:The region- ally division-based DSA pseudo-color image processing ssytem can effectively improve the coronary heart DSA image quality,reduce the amount of contrast medium and the frequency of exposure.