Please use this identifier to cite or link to this item:
Title: Scatter correction algorithm without extra exposure for dual-energy digital mammography
Authors: Chen, XI
Mou, X
Yan, H
Yu, H
Zhang, L 
Keywords: Digital mammography
Issue Date: 2009
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2009, v. 7258, 725840 How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
Abstract: X-ray scatter leads to erroneous calculations of dual-energy digital mammography (DEDM). The existing methods for scatter correction in DEDM are using anti-scatter grids or the pinhole-array interpolation method which is complicated and impractical. In this paper, a scatter correction algorithm for DEDM is developed based on the knowledge that scatter radiation in mammograms varies slowly and most pixels in mammograms are non-microcalcification pixels. The proposed algorithm only uses the information of low-energy (LE) and high-energy (HE) images. And it doesn't need anti-scatter grids, lead sheet and extra exposures. Our results show that the proposed scatter correction algorithm is effective. When using the simple least-squares fit and linear interpolation, the scatter to primary ratio (SPR) can be decreased from ~33.4% to ~2.8% for LE image and from ~26.2% to ~0.8% for HE image. Applying scatter correction to LE and HE images, the resultant background signal in the DE (dual-energy) calcification image can be reduced significantly.
Description: Medical Imaging 2009 : Physics of Medical Imaging, San Diego, CA, 7-12 Feb 2009
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.813466
Appears in Collections:Conference Paper

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Jan 1, 2019

Page view(s)

Last Week
Last month
Citations as of Jan 15, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.