多级图像对比度放大技术在膝关节摄影中的应用  

Application of multi-scale image contrast amplification in knee joint radiograph

作　　者：徐健[1] 丁忠祥[1] 张玉江[1] 陶越强[1] 狄幸波[1] 

机构地区：[1]浙江省人民医院放射科,浙江杭州310014

出　　处：《医学影像学杂志》2007年第9期977-979,共3页Journal of Medical Imaging

摘　　要：目的:分析评价膝关节摄影中多级图像对比度放大技术(MUSICA)参数设定的成像效果,为实际临床应用提供理论指导。方法:随机抽取膝关节侧位软拷贝图像70例,以骨皮质、骨小梁、肌间隙、髌上囊、皮下脂肪为比对目标,由三位观察者对其显示情况进行分析,并对结果进行统计分析。结果:MUSICA处于较小值(0～2)时,适合于软组织显示,但图像锐利度欠缺;处于较高值时(4～6)适合于观察骨皮质、小梁等细节信息,但较多地出现伪影,共25例;处于2～4时整体影像对比度适中,如实反映人体密度结构。结论:作图像处理时应将MUSICA为2～4设定为常规,实际应用通常情况下可以选择该处理方法,但应根据具体要求适当调整MUSICA参数值。Objective：To study the value of knee joint imaging produced by different setting of multi-scah image contrast amplification （MUSIC, A） parameter and to provide theoretical base for clinical appllcation.Methods：Knee joint lateral imaging in 70 cases were analyzed. Imaging data were visualized by three observers in tems of cortical bone, spongy bone, museulur interval, upper patella capsule, hypodermatic fat.Results：The setting MUSICA located between zero and two was suitable for displaing of soft tissue, although with the defect of lack of sharpness; the parameter located between four and six fitted for fine structure, such as cortical bone, spongy bone, while sometimes foUowed by artifacts; imaging with the parameter between two and four had moderate contrast and excellent response to raw dense structure. Conclusion： Values of MUSICA parameter between two and four should be taken as the general post processing, while, appropriate adjustment is necessary according to the anatomic structure,

关 键 词：膝关节 计算机X线摄影 伪影 后处理 

分 类 号：R681.8[医药卫生—骨科学] R812[医药卫生—外科学]