The dynamic correction of collimation errors of CT slicing pictures

2006年第1卷第2期

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《机械工程前沿（英文）》 >> 2006年第1卷第2期 doi: 10.1007/s11465-006-0016-0

The dynamic correction of collimation errors of CT slicing pictures

1.The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Xi′an Jiaotong University, Xi′an 710049, China; 2.The Institute of Advanced Manufacturing Technology, Xi′an Jiaotong University, Xi′an 710049, China;

发布日期： 2006-06-05

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摘要

To eliminate the motion artifacts of CT images caused by patient motions and other related errors, two kinds of correctors (A type and U type) are proposed to monitor the scanning process and correct the motion artifacts of the original images via reverse geometrical transformation such as reverse scaling, moving, rotating and offsetting. The results confirm that the correction method with any of the correctors can improve the accuracy and reliability of CT images, which facilitates in eliminating or decreasing the motion artifacts and correcting other static errors and image processing errors. This provides a foundation for the 3D reconstruction and accurate fabrication of the customized implants.