A Method for Sinogram Interpolation for Reducing X-ray Dose 


Vol. 37,  No. 7, pp. 601-609, Jul.  2012


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  Abstract

In this paper, a limited-view CT image reconstruction method was studied to reduce the scan times and the X-ray dose for the patients. To reduce streak artifacts which is caused by insufficient number of views, we introduce a sinogram interpolation method based on image matching. Image matching is achieved using the characteristics of the neighboring views including intensity, gradient and distance between the pixels. Interpolation is performed using the image matching results.. A numerical phantom and Al-acryl phantom were used for evaluating the effectiveness of the proposed interpolation method. The results showed that streak artifacts were reduced in the reconstructed images while the details of the images were preserved. Moreover, maximum 5% improvements in terms of PSNR were observed.

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  Cite this article

[IEEE Style]

J. Kim and K. Lee, "A Method for Sinogram Interpolation for Reducing X-ray Dose," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 7, pp. 601-609, 2012. DOI: .

[ACM Style]

Jae-Min Kim and Ki-Seung Lee. 2012. A Method for Sinogram Interpolation for Reducing X-ray Dose. The Journal of Korean Institute of Communications and Information Sciences, 37, 7, (2012), 601-609. DOI: .

[KICS Style]

Jae-Min Kim and Ki-Seung Lee, "A Method for Sinogram Interpolation for Reducing X-ray Dose," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 7, pp. 601-609, 7. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880