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3-D Image Reconstruction System of Blood Vessels Using a High-Speed X-ray Rotational Projection System

使用高速 X 射线旋转投影系统的血管 3D 图像重建系统

基本信息

批准号：
02558005
负责人：
NIKI Noboru
金额：
$ 5.31万
依托单位：
University of Tokushima
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02558005/
关键词：
X-Ray Rotational Projection System Image Intensifier Cone-Beam Projection Short-Scan 3-D Image Reconstruction of Blood Vessels 3-D Display of Blood Vessels Fabrication of Blood Vessel Model Quantitative Diagnosis 回転立体血管撮影装置血管内の3次元表示並

项目摘要

X-ray angiograms are usually used for inspection of the blood vessels because of their high resolution. To provide a more quantitative analysis of the information contained in angiograms, methods to reconstruct 3-D image of blood vessels have been developed. Conventional methods using X-ray angiograms utilize the biplane measurement system or the stereo measurement system. However, the information provided by only a few projections is insufficient for reconstructing 3-D image of blood vessels. Furthermore, conventional methods require extensive user interaction. Therefore, it is very difficult to reconstruct an accurate 3-D image of blood vessels.We develop a 3-D image processing system to reconstruct 3-D image of blood vessels using a high-speed X-ray rotational projection system. The measurement system, consisting of a cone beam X-ray source and an image intensifier (II), provides 512x512 projection images corresponding to 60 views of the blood vessel structure in a short measurement period (2 sec). The 3-D image processing method consists of correction of image distortion generated by II, estimation of the measurement system geometry, and 3-D image reconstruction of the blood vessels from short scan cone-beam projections. The 3-D reconstructed images can be visualized on a computer graphics, and are employed to fabricate a 3-D model of the blood vessel structure. From results of the application to the X-ray angiograms of patient blood vessels, we show that the proposed image processing system is effective for quantitative diagnosis and treatment planning.

由于x线血管造影分辨率高，通常用于血管检查。为了对血管图像中包含的信息进行更定量的分析，已经开发了重建血管三维图像的方法。传统的x线血管造影方法采用双翼测量系统或立体测量系统。然而，仅靠少量投影所提供的信息不足以重建血管的三维图像。此外，传统方法需要大量的用户交互。因此，重建精确的血管三维图像是非常困难的。我们开发了一个三维图像处理系统，利用高速x射线旋转投影系统重建血管的三维图像。测量系统由锥束x射线源和图像增强器（II）组成，在短的测量周期（2秒）内提供512 × 512投影图像，对应血管结构的60个视图。三维图像处理方法包括校正II产生的图像畸变、估计测量系统的几何形状以及利用短扫描锥束投影重建血管的三维图像。三维重建图像可以在计算机图形上可视化，并用于制作血管结构的三维模型。应用于患者血管x线图像的结果表明，所提出的图像处理系统对定量诊断和治疗计划是有效的。