Demonstration of a scatter correction technique in digital breast tomosynthesis

We have recently developed a method of using a distributed x-ray source array to obtain images with scatter correction for tomographic reconstruction of an object. The method consists of obtaining x-ray images of the object with and without the primary beam sampling apparatus. In this study, we report the results of applying the scatter correction method for breast tomosynthesis imaging using the carbon nanotube x-ray based stationary Digital Breast Tomosynthesis (s-DBT) system developed at UNC. The unique design of s-DBT system makes it possible to estimate the image of the scatter profile of the object with very low dose, and without significant increase in acquisition time. An anthropomorphic breast phantom was used for quantitative analysis of the change in contrast and scatter-to-primary ratio. Our results suggest that the scatter correction method is effective and can be used for enhanced contrast.

[1]  Otto Zhou,et al.  Optimizing configuration parameters of a stationary digital breast tomosynthesis system based on carbon nanotube x-ray sources , 2012, Medical Imaging.

[2]  Ian Shaw,et al.  Design and performance of the prototype full field breast tomosynthesis system with selenium based flat panel detector , 2005, SPIE Medical Imaging.

[3]  Lei Zhu,et al.  Scatter correction for full-fan volumetric CT using a stationary beam blocker in a single full scan. , 2011, Medical physics.

[4]  John M. Boone,et al.  An object-specific and dose-sparing scatter correction approach for a dedicated cone-beam breast CT system using a parallel-hole collimator , 2012, Medical Imaging.

[5]  Tuyen Phan,et al.  Design and characterization of a spatially distributed multibeam field emission x-ray source for stationary digital breast tomosynthesis. , 2009, Medical physics.

[6]  Andrew D. A. Maidment,et al.  Optimization of continuous tube motion and step-and-shoot motion in digital breast tomosynthesis systems with patient motion , 2012, Medical Imaging.

[7]  W Huda,et al.  Scattered radiation in scanning slot mammography. , 1998, Medical physics.

[8]  Björn Cederström,et al.  Scatter rejection in multislit digital mammography. , 2006, Medical physics.

[9]  Andrew D. A. Maidment,et al.  Dynamic reconstruction and rendering of 3D tomosynthesis images , 2011, Medical Imaging.

[10]  Yiheng Zhang,et al.  High resolution stationary digital breast tomosynthesis using distributed carbon nanotube x-ray source array. , 2012, Medical physics.