Scatter correction algorithm without extra exposure for dual-energy digital mammography

Xi Chen; Xuanqin Mou; Hao Yan; Hengyong Yu; Lei Zhang

doi:10.1117/12.813466

14 March 2009 Scatter correction algorithm without extra exposure for dual-energy digital mammography

Xi Chen, Xuanqin Mou, Hao Yan, Hengyong Yu, Lei Zhang

Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 725840 (2009) https://doi.org/10.1117/12.813466
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States

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.

Citation Download Citation

Xi Chen, Xuanqin Mou, Hao Yan, Hengyong Yu, and Lei Zhang "Scatter correction algorithm without extra exposure for dual-energy digital mammography", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 725840 (14 March 2009); https://doi.org/10.1117/12.813466

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available