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## Line-source based X-ray Tomography

Citations: | 2 - 2 self |

### Citations

124 | Simultaneous algebraic reconstruction technique (SART): A superior implementation of the art algorithm
- ANDERSEN, KAK
- 1984
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Citation Context ...eanwhile, there is a renewed interest in iterative algorithms due to the improvement in computational capabilities [5, 7]. It is well known that simultaneous algebraic reconstruction technique (SART) =-=[6, 7]-=- has remained a very powerful tool for iterative reconstruction since its introduction and it has been shown to converge to a weighted least squares solution from any initial guess [8]. Moreover, the ... |

111 |
Computerized transverse axial scanning (tomography): Part 1. description of system
- Hounsfield
- 1973
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Citation Context ...mography (CT), micro-CT, simultaneous algebraic reconstruction technique (SART), generalized SART, point source, line source. I. Introduction Since the first computed tomography (CT) scanner was made =-=[1]-=-, all the commercial scanners have been employing the x-ray source with a small focal spot, which can be mathematically modeled as a point source. In micro-CT and even nano-CT applications, the reduce... |

37 |
Convergence studies on iterative algorithms for image reconstruction
- Jiang, Wang
(Show Context)
Citation Context ...ior performance is well established when the data is incomplete, noisy and dynamic. Meanwhile, there is a renewed interest in iterative algorithms due to the improvement in computational capabilities =-=[5, 7]-=-. It is well known that simultaneous algebraic reconstruction technique (SART) [6, 7] has remained a very powerful tool for iterative reconstruction since its introduction and it has been shown to con... |

35 | Convergence of the Simultaneous Algebraic Reconstruction Technique (SART
- Jiang, Wang
- 2003
(Show Context)
Citation Context ...nique (SART) [6, 7] has remained a very powerful tool for iterative reconstruction since its introduction and it has been shown to converge to a weighted least squares solution from any initial guess =-=[8]-=-. Moreover, the SART method operates in the whole real space, while the other popular iterative algorithm expectation maximization is defined only for nonnegative space, although it does preserve data... |

19 | R.J.: Nonnegativity constraints in numerical analysis
- Chen, Plemmons
- 2009
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Citation Context ...ncorporated within our algorithm or other algorithms utilizing gradient information could be developed in the future. Some examples of prior information include support and non-negativity constraints =-=[11]-=-. In addition, investigation of regularization approaches to alleviate noise magnification and blurring artifacts [12] is an important research direction to pursue in future work. This is feasibility ... |

4 | 3D Iterative Restoration of Tomosynthetic Images
- Hemler, Persons, et al.
- 2001
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Citation Context ...Some examples of prior information include support and non-negativity constraints [11]. In addition, investigation of regularization approaches to alleviate noise magnification and blurring artifacts =-=[12]-=- is an important research direction to pursue in future work. This is feasibility study and there is not enough information to comment on scatter and its effects. Scattering is a real concern in compu... |

3 |
MOE-L100J-07: multiplexing radiography for ultra-fast computed tomography: a feasibility study
- Zhang, Yang, et al.
- 2007
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Citation Context ... and the temporal resolution is limited by the time necessary to acquire sufficient projection data over an angular range.In contrast to recently proposed source configurations, like the multiplexed =-=[2]-=- and multiple-source geometry [3] which utilize multiple point x-ray sources to reduce the acquisition time, our technique treats the entire line segment as a single x-ray source. Since a line source ... |

2 |
Multi-source inverse geometry CT: a new system concept for x-ray computed tomography
- Man, Basu, et al.
(Show Context)
Citation Context ...imited by the time necessary to acquire sufficient projection data over an angular range.In contrast to recently proposed source configurations, like the multiplexed [2] and multiple-source geometry =-=[3]-=- which utilize multiple point x-ray sources to reduce the acquisition time, our technique treats the entire line segment as a single x-ray source. Since a line source covers a wide angular range per v... |

2 |
High current, high current density field emitter array cathodes
- Schwoebel, Spindt, et al.
- 2005
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Citation Context ...be very densely packed. As a result, even though the current that can be obtained from a single tip is small, the total current that can be obtained from an array can be much larger. Schwoebel et al. =-=[4]-=- reported that they were able to obtain a current of 300mA by packing 50,000 tips into a circular area of a square millimeter, which is equivalent to 40A/cm 2 . Using the technique as described above,... |

2 |
Convergence of the simultaneous algebraic reconstruction technique (sart
- Ming, Ge
- 2003
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Citation Context ...s algorithm can be easily extended to more general 1D x-ray source shapes and even to 2D planar x-ray sources as well, which may have applications in dynamic imaging. Moreover, the OS-SART algorithms =-=[10]-=- can be similarly modified to obtain a generalized OS-SART algorithm with faster convergence. To the best of our knowledge, this is the first paper attempting to solve the contradiction between tempor... |

1 |
Thorax Phantom, Available at: http://www.imp.unierlangen.de/phantoms/thorax/thorax.htm. [cited 12/2/2007
- Sourbelle
(Show Context)
Citation Context ...thm. IV. Numerical Simulations To validate the feasibility of line-shaped x-ray source and demonstrate the merits of generalized SART algorithm, we developed a numerical simulator. The thorax Phantom =-=[9]-=- was used in our simulations. A 60 cm virtual linear detector was assumed and its detector element size was 0.1 cm. The center of the line source was at a perpendicular distance ( D ) (see Fig. 1) of ... |