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1 March 2019 Improved wedge scatter correction for multi-slice CT system
Yang Wang, Karl Stierstorfer, Martin Petersilka, Yi Tian
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Proceedings Volume 10948, Medical Imaging 2019: Physics of Medical Imaging; 109482B (2019) https://doi.org/10.1117/12.2511910
Event: SPIE Medical Imaging, 2019, San Diego, California, United States
Abstract
In modern multi-slice CT systems, bowtie shape wedge filter is widely used for optimizing patient received radiation dose distribution. Since wedge filter is usually fixed in the path of X-ray, the induced scatter radiation could give impact on image quality under certain cases. In order to compensate this extra scatter radiation and improve the image quality, we introduced a wedge scatter correction algorithm integrated in the raw data pre-processing workflow. After the algorithm is implemented on our latest CT systems, the improvement can be seen from both water phantom images and clinical patient images.
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Yang Wang, Karl Stierstorfer, Martin Petersilka, and Yi Tian "Improved wedge scatter correction for multi-slice CT system", Proc. SPIE 10948, Medical Imaging 2019: Physics of Medical Imaging, 109482B (1 March 2019); https://doi.org/10.1117/12.2511910
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KEYWORDS
Image quality
X-ray computed tomography
Scattering compensation
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