摘要
目的：探讨螺旋ＣＴ三维容积重建（ｖｏｌｕｍｅ ｒｅｎｅｒｉｎｇ，简称 ＶＲ）的实用方法和技巧，扩大其临床应用范围。方 法：ＶＲ三维重建１００例包括：①血管组４９例，②骨关节组３０例，③其它部位组２１例。扫描层厚为１ｍｍ、２ｍｍ、３ｍｍ、５ｍｍ，重 建间隙０．９ｍｍ、１．４ｍｍ、２．３ｍｍ，螺距１～２，重建方式为容积重建。结果：全部病例三维立体显示良好，图像柔和自然，病变 整体形态及周围结构的关系明确，并可从不同的位置及角度行立体定位观察。应用范围涉及多个系统或器官。结论：高 质量的容积重建三维图像依赖于技术参数的合理选择和匹配，以及操作者的技巧及熟练程度。同时容积重建具有广泛的 应用范围。
Objective: To study the ways and techniques of three-dimensional reconstruction volume rendering(VR) ,and extent the range of its clinical applications. Methods: 100 cases were studied by three-dimensional reconstruction with volume rendering(VR) : ①49 blood vessels;②30 bony joints;③21 other parts.Collimation of 1mm^5mm,pitch of 1~2,reconstrction intervals of 0.9~2.4 were se- lected as the parameters of three-dimensional reconstruction with volume rendering. Results: All the 3D images with VR were clear, soft and natural. The shape of focus and its relationship with surroundings were clearly shown. Projection could be observed from different angles and in different directions.The application covered multi-systems and multi-organs. Conclusion: High-quality 3D image with VR is subject to the appropriate and reasonable technical parameters, and the proficiency of the operator. Also, 3D reconstruction with VR has a wide range of clinical application.
出处
《放射学实践》
2000年第6期434-437,共4页
Radiologic Practice
关键词
螺旋CT
容积重建
图像处理
临床应用
Tomography, X-ray computed Volume rendering Image processing Computer-assisted
