摘要
目的 探讨用个人电脑对 (CT)断层图像三维重建的方法。方法 扫描仪将连续断层图像输入计算机 ,用IDL 5 2可视化语言编写的“医学断层片立体成像系统”进行三维成像。对喉癌2 3例 ,下咽癌 3例的喉部CT断层进行三维成像观查。结果 成像有以下几个特点 :①扫描时采用2 5 6级灰度 ,使用自动亮部和暗部均衡设置。可以较准确地反映CT片的细节。扫描后可以对图像进行二维图像均衡化、增强。滤波和假色彩表灰度赋值并以基准定标方法或图 图定标方法对各层图像定位。②实体重建 :利用特征查询法 ,重构中间层的结构和灰度变化 ,实体重建后可以从不同的侧面观察 ,任意切取一部分或剥除一部分来观察内部 ,内部的图像显示依然有丰富的灰度变化。③肿瘤标识 :根据每一层CT片上肿物的侵蚀范围 ,标识出肿瘤的大小 ,重建后可以观察肿瘤的整体形态。④可选灰度值显示、半透明显示、旋转和自由切取。⑤模拟内窥镜 :观察喉腔内的形态。⑥测量。结论 在个人电脑上实现三维重建 ,不需添加任何图像加速装置 ,便于普及。临床医师容易掌握 ,对术前明确肿瘤范围 ,正确选择手术术式和预想手术进程有一定帮助。
Objective To study the value of the clinical application of stereography in laryngology Methods Taken by Microtek E6 scanner, the CT faultage images were inputted in personal computer and reconstructed to a three dimensional stereograph by “the three dimensional reconstruction system of medical faultage photograph”. The software was compiled using IDL5 2, a complete, integrated software environment for data analysis, visualization and application Results The three dimensional laryngeal graph could be incised in random, displayed in optional degree, and was rotatable,semitransparent and measurable The tumor could identified be identified by a special color and revealed through translucent parenchyma and cartilage Reconstruction stereographs of laryngeal and hypopharyngeal cancer of 26 patients were investigated Conclusion It is convenient for popularization because the three reconstruction process is built on a personal computer without the need of any equipment for image acceleration It is very helpful for ENT surgeon to define the range of the tumor, to fix on surgical pattern accurately and to anticipate the operational course
出处
《中华耳鼻咽喉科杂志》
CSCD
2000年第1期45-47,I003,共4页
Chinese Journal of Otorhinolaryngology
基金
中国人民解放军总后科研基金!( 96D0 5 9)
关键词
喉肿瘤
下咽肿瘤
三维重建
CT
Laryngeal neoplasms
Hypopharyngeal neoplasms
Image processing, computer assisted
Three dimensional reconstruction
