| Title | Differential phase-contrast interior tomography |
| Authors | Cong, Wenxiang Yang, Jiangsheng Wang, Ge |
| Affiliation | Virginia Tech, Biomed Imaging Div, Sch Biomed Engn & Sci, Blacksburg, VA 24061 USA. Peking Univ, Sch Math Sci, Beijing 100871, Peoples R China. |
| Keywords | RAY TALBOT INTERFEROMETRY IMAGE-RECONSTRUCTION HILBERT TRANSFORM |
| Issue Date | 2012 |
| Publisher | 物理学在医学与生物学中应用 |
| Citation | PHYSICS IN MEDICINE AND BIOLOGY.2012,57,(10),2905-2914. |
| Abstract | Differential phase-contrast interior tomography allows reconstruction of a refractive index distribution over a region of interest (ROI) for visualization and analysis of structures inside a large biological specimen. In the imaging mode, x-ray scanning only targets an ROI in an object and a narrow beam passes through the object, allowing a significant reduction of both radiation dose and system cost. Inspired by recently developed compressive sensing theory, in a numerical analysis framework we show that accurate interior reconstruction can be achieved on an ROI from truncated differential projection data through the ROI via the total variation minimization, assuming a piecewise constant distribution of the refractive indices in the ROI. Then, we develop a practical iterative algorithm for such an interior reconstruction and perform numerical experiments to demonstrate the feasibility of the proposed approach. |
| URI | http://hdl.handle.net/20.500.11897/393372 |
| ISSN | 0031-9155 |
| DOI | 10.1088/0031-9155/57/10/2905 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 数学科学学院 |
