A preliminary study of an image synthesis method to simulate the change in the incident X-ray spectrum by using thickness information

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• 作者：Seokmin Han ; Kihwan Choi ; Sang Wook Yoo
• 关键词：Image synthesis ; Imaging parameters ; Mmammography ; Calibration ; Thickness ; Additive noise
• 刊名：Journal of the Korean Physical Society
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：68
• 期：6
• 页码：815-820
• 全文大小：799 KB
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• 作者单位：Seokmin Han (1)
  Kihwan Choi (1)
  Sang Wook Yoo (1)
  
  1. Samsung Electronics, Suwon, 16677, Korea
  
• 刊物主题：Physics, general; Theoretical, Mathematical and Computational Physics; Particle and Nuclear Physics;
• 出版者：Springer Netherlands
• ISSN：1976-8524

文摘

The objective of this research is to suggest an image synthesis method to simulate the change in the incident X-ray spectrum, based on knowledge of the tissue thickness. The image of a reference phantom was acquired before acquiring the image of an object under the same condition. With knowledge of the thickness of an input pixel, the mapping region could be limited to a specific thickness region in the reference phantom. Taking advantage of the relation between the reference phantom and the imaging object mapped to a limited region, we could synthesize an image acquired at a different tube current and tube voltage. The noise difference was compensated for by the addition of zero-mean Gaussian noise, and RMSE(root mean-square error) between the synthesized image and the actual image was calculated. The average noise difference between the synthesized image and the actual image was about 4.5% (ranging from 0% to 7.7%). RMSE between those images was calculated to be about 1.4% of the average pixel intensity. The calculated results indicate that the proposed method can provide a synthesized image close to the actual image.