Digital tomosynthesis aided by low-resolution exact computed tomography.
Tomosynthesis reconstructs 3-dimensional images of an object from a significantly fewer number of projections as compared with that required by computed tomography (CT). A major problem with tomosynthesis is image artifacts associated with the data incompleteness. In this article, we propose a hybrid tomosynthesis approach to achieve higher image quality as compared with competing methods. In this approach, a low-resolution CT scan is followed by a high-resolution tomosynthesis scan. Then, both scans are combined to reconstruct images. To evaluate the image quality of the proposed method, we design a new breast phantom for numerical simulation and physical experiments. The results show that images obtained by our approach are clearly better than those obtained without such a CT scan.
VT-WFU School of Biomedical Engineering & Sciences, Virginia Polytechnic Institute & State University, Blacksburg, VA, USA.
Kai
K
Zeng
Hengyong
H
Yu
Shiying
S
Zhao
Laurie Lee
LL
Fajardo
Christopher
C
Ruth
Zhenxue
Z
Jing
Ge
G
Wang
D000465:Algorithms; D001940:Breast / Q000033:anatomy & histology; D003198:Computer Simulation; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008327:Mammography / Q000379:methods; D008962:Models, Theoretical; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*