X-ray scatter suppression algorithm for cone beam volume CT

被引：37

作者：

Ning, RL ^{[1
]}

Tang, XY ^{[1
]}

Conover, DL ^{[1
]}

机构：

[1] Univ Rochester, Dept Radiol, Rochester, NY 14642 USA

来源：

MEDICAL IMAGING 2002: PHYSICS OF MEDICAL IMAGING | 2002年 / 4682卷

关键词：

scatter; scatter correction; antiscatter grid; cone beam reconstruction; flat panel detector; cone beam volume CT;

D O I：

10.1117/12.465628

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 [生物医学工程];

摘要：

Developing and optimizing an x-ray scatter control and reduction technique is one big challenge for cone beam volume computed tomography (CBVCT) because CBVCT will be much less immune to scatter than fan-beam CT. X-ray Scatter reduces image contrast, increases image noise and introduces reconstruction error into CBVCT. To reduce scatter interference, a practical algorithm that is based upon the beam stop array technique and image sequence processing has been developed on a flat panel detector-based CBVCT prototype scanner. This paper presents beam stop array-based scatter correction algorithm and the evaluation results through phantom studies. The results indicate that the beam stop array-based scatter correction algorithm is practical and effective to reduce and correct x-ray scatter for a CBVCT imaging task.

引用

收藏

页码：774 / 781

页数：2

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