NDLI: A three-dimensional linear model for breast tomosynthesis

Content Provider	IEEE Xplore Digital Library
Author	Bo Zhao Wei Zhao
Copyright Year	2007
Description	Author affiliation: State Univ. of New York-Stony Brook, Stony Brook (Bo Zhao)
Abstract	Breast tomosynthesis alleviates the obscuring effects of overlapping breast tissue overlap in the diagnosis of breast cancer in screening mammography. In breast tomosynthesis, multiple projection images are acquired when the X-ray tube travels within a limited angular range, typically < 50deg. The projection images are reconstructed into tomographic slices that are parallel to the detector surface. Factors affecting the image quality of breast tomosynthesis include detector performance, acquisition geometry and reconstruction method. To investigate the impact of each factor, we built a three dimensional linear system model for breast tomsynthesis, validated it using experimental measurements of linear system parameters including noise power spectrum (NPS) and presampling modulation transfer function (MTF). Experiments were performed on a prototype breast tomosynthesis system equipped with an amorphous selenium (a-Se) digital mammography detector. Filtered backprojection (FBP) method was used for image reconstruction. Due to the limited angular range, the reconstructed 3D volume (512x512x40) had an anisotropic voxel size $(0.085x0.085x1mm^{3}).$ Scatter free uniform images were acquired for NPS analysis and an edge phantom was imaged for MTF measurements. It was found that the model agreed well with measurement, hence can be used to predict the imaging performance with different parameters and lead to optimization of breast tomosynthesis.
Starting Page	163
Ending Page	164
File Size	326315
Page Count	2
File Format	PDF
ISBN	9781424410323
DOI	10.1109/NEBC.2007.4413329
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image reconstruction Detectors Mammography Linear systems Breast tissue Breast cancer X-ray imaging Tomography Surface reconstruction Image quality
Content Type	Text
Resource Type	Article

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