线性时序采样投影的时变目标层析重建

Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing Pub Date : 1994-04-19 DOI:10.1109/ICASSP.1994.389470

Y. Chiu, S. Yau

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引用次数: 1

摘要

本文研究了时变物体的计算机断层扫描重建问题。实际上，在不同方向上的投影是依次测量的。因此，当物体时变时，在不同的时间得到不同方向的投影，不会对应相同分布的投影。因此，重建的图像将具有运动伪影。为了解决这一问题，提出了一种基于先验投影知识的图像重建方法。提出了一种新的迭代算法，计算机仿真结果验证了该算法的有效性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Tomographic reconstruction of time-varying object from linear time-sequential sampled projections

This paper considers the reconstruction of time-varying object by computer tomography. In practice, projections at different directions are measured in sequence. Thus, when the object is time-varying, the projections at different directions are obtained at different time and will not correspond to those of the same distribution. The reconstructed images will therefore have motion artifacts. A new image reconstruction method based on a priori knowledge of the projections is introduced to solve this problem. A novel iterative algorithm is developed and its validity is demonstrated by computer simulation results.<>

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Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing

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