Improvement of image performance in digital breast tomosynthesis (DBT) by incorporating a compressed-sensing (CS)-based deblurring scheme. (October 2016)

• Record Type: Journal Article
• Authors: Kim, Kyuseok; Park, Yeonok; Cho, Heemoon; Cho, Hyosung; Je, Uikyu; Park, Chulkyu; Lim, Hyunwoo; Park, Soyoung; Woo, Taeho; Choi, Sungil
• Is Part Of: Radiation physics and chemistry. Volume 127(2016:Oct.)
• Page Start: 147
• Page End: 154
• Publication Date: 2016-10
• Subjects: Deblurring -- Compressed-sensing (CS) -- Digital breast tomosynthesis (DBT) -- Filter kernel; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2016.06.025
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: In this work, we investigated a compressed-sensing (CS)-based deblurring scheme incorporated with the total-variation (TV) regularization penalty for image deblurring of high accuracy and adopted it into the image reconstruction in conventional digital breast tomosynthesis (DBT). We implemented the proposed algorithm and performed a systematic simulation to demonstrate its viability for improving the image performance in DBT as well as two-dimensional (2D) mammography. In the simulation, blurred noisy projection images of a 3D numerical breast phantom were generated by convolving their original (or exact ) version by a designed 2D Gaussian filter kernel (standard deviation=2 in pixel unit, kernel size=11×11), followed by adding Gaussian noise (mean=0, variance=0.05), and deblurred by using the algorithm before performing the DBT reconstruction procedure. Here the projection images were taken with a half tomographic angle of θ=20° and an angle step of Δθ=2°. We investigated the image performance of the reconstructed DBT images quantitatively in terms of the modulation and the slice-sensitive profile (SSP). Highlights: A compressed-sensing (CS)-based deblurring scheme is performed. We implement the proposed algorithm and performed a systematic simulation. A blurred noisy projection images of a 3D numerical breast phantom is generated. The improving of the image performance is done in DBT as well as 2D mammography.