Keywords:
radiography, field emission x-ray source array, image restoration, projection rebinning
Field emission x-ray source array is an emerging technology with some advantages compared with conventional xray source. In this work, a radiographic scheme based on field emission x-ray source array was proposed to study its possible application in radiation imaging. Each x-ray source in the array emits a cone beam x-ray through part of the object, and all the sources are overlapped to cover the whole object. Two x-ray source scan strategies, grouped scan strategy and simultaneous scan strategy, were studied. A projection rebinning based image restoration algorithm was introduced for the imaging schemes. Numerical simulations demonstrated that both scan strategies were effective for image restoration. Specifically, the grouped scan strategy produced fewer artifacts than the simultaneous scan strategy due to the non-overlap projections, while the simultaneous scan strategy enables faster imaging considering the inherent simultaneous data collection mode. This feasibility study illustrated that the field emission x-ray source array based radiographic scheme may offer a promising image modality.
- Kai Wang
- Institute of Image Processing and Pattern Recognition, Xi'an Jiaotong University, China
- Qinrong Qian
- Institute of Image Processing and Pattern Recognition, Xi'an Jiaotong University, China
- Xi Chen
- Institute of Image Processing and Pattern Recognition, Xi'an Jiaotong University, China
- Xuanqin Mou
- Institute of Image Processing and Pattern Recognition, Xi'an Jiaotong University, China
- Haitao Cheng
- Institute of Image Processing and Pattern Recognition, Xi'an Jiaotong University, China
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