Abstract
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.
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