A three-dimensional linear model for breast tomosynthesis

Bo Zhao, Wei Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 < 50°. 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 (0.085x0.085x1mm3). 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.

Original languageEnglish (US)
Title of host publication33rd Annual Northeast Bioengineering Conference - Engineering Innovations in Life Sciences and Healthcare, NEBC
Pages163-164
Number of pages2
DOIs
StatePublished - Dec 1 2007
Event33rd Annual Northeast Bioengineering Conference, NEBC - Stony Brook, NY, United States
Duration: Mar 10 2007Mar 11 2007

Publication series

NameBioengineering, Proceedings of the Northeast Conference
ISSN (Print)1071-121X

Other

Other33rd Annual Northeast Bioengineering Conference, NEBC
CountryUnited States
CityStony Brook, NY
Period3/10/073/11/07

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ASJC Scopus subject areas

  • Bioengineering

Cite this

Zhao, B., & Zhao, W. (2007). A three-dimensional linear model for breast tomosynthesis. In 33rd Annual Northeast Bioengineering Conference - Engineering Innovations in Life Sciences and Healthcare, NEBC (pp. 163-164). [4413329] (Bioengineering, Proceedings of the Northeast Conference). https://doi.org/10.1109/NEBC.2007.4413329