EXPERIMENTAL SCATTER CORRECTION METHODS IN INDUSTRIAL X-RAY CONE-BEAM CT

被引：0
|
作者：
Schoerner, K. [1 ]
Goldammer, M. [1 ]
Stephan, J. [1 ]
机构：
[1] Siemens AG, Corp Technol, D-81739 Munich, Germany
来源：
REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 30A AND 30B | 2011年 / 1335卷
关键词：
X-ray Cone-Beam Computed Tomography; Scatter; Artifact Removal; Beam-Stop Array;
D O I：
10.1063/1.3591891
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Scattered radiation presents a major source of image degradation in industrial cone-beam computed tomography systems. Scatter artifacts introduce streaks, cupping and a loss of contrast in the reconstructed CT-volumes. In order to overcome scatter artifacts, we present two complementary experimental correction methods: the beam-stop array (BSA) and an inverse technique we call beam-hole array (BHA). Both correction methods are examined in comparative measurements where it is shown that the aperture-based BHA technique has practical and scatter-reducing advantages over the BSA. The proposed BHA correction method is successfully applied to a large-scale industrial specimen whereby scatter artifacts are reduced and contrast is enhanced significantly.
引用
收藏
页码：485 / 492
页数：8
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