Title :
Phase retrieval for grating phase-contrast CT
Author :
Haiyang Li ; Weiguo Cao ; Siyuan Wang ; Shirui Li ; Hua Li
Author_Institution :
Comput. Applic. Res. Center, Inst. of Comput. Technol., Beijing, China
Abstract :
Grating phase-contrast CT obtains differential phase, which is different from conventional CT (absorb-contrast CT). How to retrieve phase of object becomes a new topic. Nowadays, many algorithms have appeared to retrieve and reconstruct materials´ phase information. We design a new filter to retrieve phase but not increase the dose of X-ray. The result of phase retrieved shows the validity and correctness of the filter.
Keywords :
computerised tomography; feature extraction; filters; image reconstruction; medical image processing; X-ray dose; absorb-contrast CT; conventional CT; differential phase; filter correctness; filter design; filter validity; grating phase-contrast CT; material phase information reconstruction; phase retrieval algorithms; Computed tomography; Gratings; Image reconstruction; Materials; Optical filters; X-ray imaging; Fourier transform; phase retrieval; phase-contrast; reconstruction;
Conference_Titel :
Medical Imaging Physics and Engineering (ICMIPE), 2013 IEEE International Conference on
Conference_Location :
Shenyang
Print_ISBN :
978-1-4799-6305-8
DOI :
10.1109/ICMIPE.2013.6864555
