CAJ | 학술논문

针对我们研制的小动物活体成像的X射线显微CT系统,研究了显微CT成像的图像实时校正问题,分别对探测器固有缺陷引起的像素响应失真及锥形成像几何造成的光照不均匀进行了分析,提出了校正方案,并实现了图像实时在线校正.初步的实验结果显示,该方案有很好的校正效果,取得了满意的成像质量,能满足实时性工作需求,可以推广应用于其它类似显微CT成像的图像实时校正.
침대아문연제적소동물활체성상적X사선현미CT계통,연구료현미CT성상적도상실시교정문제,분별대탐측기고유결함인기적상소향응실진급추형성상궤하조성적광조불균균진행료분석,제출료교정방안,병실현료도상실시재선교정.초보적실험결과현시,해방안유흔호적교정효과,취득료만의적성상질량,능만족실시성공작수구,가이추엄응용우기타유사현미CT성상적도상실시교정.
The aim of the study was to investigate the online image distortion corrections for our X-ray mi-cro-CT system for high-resolution small animal imaging. The distortions of micro-CT imaging due to the detectors intrinsic defects and the nonuniform irradiation of the cone-beam geometry were analyzed. The correction method for those image distortions was then developed and implemented with online image ac-quisition. The preliminary experiments show that our correction method is reliable and effective to correct those image distortions from the projection images. This image correction method could be utilized for ther similar micro-CT systems.