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KMID : 0384620080190030186
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Korean Journal of Medical Physics
2008 Volume.19 No. 3 p.186 ~ p.190
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Cone-beam Reconstruction using Limited EPID Projections for Seeds Localization
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Chang Ji-Na
Jung Won-Gyun
Park Sung-Ho
Cheong Kwang-Ho
Suh Tae-Suk
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Abstract
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In this study, we describe the preliminary application for the delineation of a metal object using cone-beam reconstruction (CBR) based on limited electronic portal imaging device (EPID) projections. A typical Feldkamp, Davis and Kress (FDK) reconstruction algorithm accompanying the edge preserving smoothing filter was used as only a few projections are acquired for reconstruction. In a correlation study of the projection numbers, we found that the size of the seeds and their location depicted by these CBR images were almost identical. Limited views were used for CBR, and our method is inexpensive and competitive for use in clinical applications.
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KEYWORD
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Sone-beam reconstruction, Limited EPID projections, Seeds localization
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