时域方法检测组织运动的匹配函数研究  

Research of match function to detect tissue motion with time-domain method

作　　者：罗建[1] 曹培杰[2] 李鲁平[3] 程敬之 

机构地区：[1]第四军医大学西京医院设备科 [2]第四军医大学西安交通大学生物医学工程系 [3]第四军医大学空军医学系航空生理学教研室,西安710033

出　　处：《第四军医大学学报》1998年第4期406-408,共3页Journal of the Fourth Military Medical University

摘　　要：研究从B超二维回声图检测组织运动的时域分析方法，比较了4种匹配函数的性能特点．方法：通过对二维B超序列心动图的计算机处理和超声水槽模型实验，观察图像帧间相关性．结果：从跟踪精度和运算速度等方面比较，均方差匹配函数性能优于其它匹配函数．结论：使用均方差匹配函数和塔形数据结构的时域方法跟踪组织运动速度是可行的，方向分辨率优于频域法．Aim: The purpose of this study was to detect tissue motion from B-mode two-dimension ultrasonic order images with time domain method and compare the property of4 match functions. Methods: Two-dimension ultrasonic echo images were processed through experiments of computersimulation and ultrasonic water groove, the relationshipsproperty between frames were observed. Results: Themean square error match function was better than othermatch functions in the detecting precision and the algorithmvelocity. Conclusion: The results suggest that it is able todetect tissue motion with time domain method using pagodadata structure and mean square error match function. Its direction resolution is better than frequency domain method.

关 键 词：回声图 时域检测 模板匹配 B超 图像处理 

分 类 号：R445.1[医药卫生—影像医学与核医学]