腮腺恶性肿瘤CT影像色度学定量研究  

Colorimetric Quantitative Study on CT Images of Parotid Gland with Malignant Tumor

作　　者：蓝鹏[1] 云素珍 张凌[1] 金武龙[1] 崔彩荣[1] 申铁兵[1] 孟秀英[1] 李琼[1] 

机构地区：[1]内蒙古医科大学附属医院口腔科,内蒙古呼和浩特010050 [2]呼和浩特市口腔医院,内蒙古呼和浩特010030

出　　处：《内蒙古医学杂志》2013年第12期1416-1418,F0004,共4页Inner Mongolia Medical Journal

基　　金：内蒙古自然科学研基金资助项目(2011MS1163)

摘　　要：目的：探讨通过腮腺CT影像色度学定量分析,为腮腺CT图像和其它浓淡图像和彩色图像的定量诊断找到了途径.方法：选取30例经过病理确诊的罹患单侧恶性腮腺肿瘤的CT数字影像片,利用软件Photoshop Extended对患侧和健侧进行伪彩色处理并用直方图方法来测定其浓淡图像的灰度值,这些灰度值不同于CT值,分为0～255共256个灰度级,属于计算机图像灰度值,同时通过SPSS 17.0统计包对腮腺健侧、患侧灰度值进行统计比较.结果：对患侧和健侧进行伪彩色处理后,比较精确地测量得出正常腮腺及患恶性肿瘤腮腺的灰度值.结果显示,正常腮腺与罹患有恶性肿瘤的腮腺图像经过伪彩色处理后,进行数字化直方图测量灰度值存在明显差异,具有统计学意义（t=12.95,P＜0.05）,供鉴别诊断使用.结论：伪彩色可以对黑白图像进行分层,从而使得人眼能够从经过伪彩色处理的图像中提取更多的图像信息,达到降低人为测量误差、提高判读精度的目的.通过Photoshop Extended伪彩色处理并进行直方图测量后,可以得到正常腮腺及罹患恶性肿瘤腮腺的灰度值均值,临床上对腮腺恶性肿瘤的鉴别有一定指导意义,为腮腺CT图像和其它浓淡图像和彩色图像的定量诊断找到了方法.Objective： By making quantitative chromatics analyses of the parotid gland CT image, to explore a method of quantitative diagnosis of parotid gland CT images （not only black and white images but also colorful ones）. Method： 30 CT images of pathologically diagnosed malignant tumor of unilateral parotid gland were selected. Pseudo - color processing was made to both diseased and healthy sides by means of Photoshop Extended, and the grey scales value of black and white images were measured with histogram. Different from the CT values, the grey scales value belongs to the grey values of the computerized image ranging from 0 to 255, with 256 grey levels as total. At the same time, the grey values of both the diseased and healthy sides of parotid gland were compared by means of SPSS 17.0. Result：After pseudo- color processing to both diseased and healthy sides, a comparatively precise grey value of both the healthy parotid gland and the parotid gland with malignant tumor could be obtained. The digital histogram of the grey value shows that there exist obvious differences between the two groups, which is statistically significant, and could be applied to differential diagnosis. Conclusion：By means of the layered black and white images, human eyes could gain more information and reduce man - made measuring errors. Through Photoshop Extended pseudo - color processing and histogram pattern, a mean value between the healthy parotid gland and the parotid gland with malignant tumor could be obtained, which is clinically significant in the differential diagnosis of malignant parotid gland tumor. Meanwhile it provides a method to make quantitative diagnosis of parotid gland CT images and other black and white images and colorful ones.

关 键 词：腮腺 恶性肿瘤 伪彩色 定量研究 

分 类 号：R816.98[医药卫生—放射医学]