Dr. Xin Liu Profile

Dr. Xin Liu

Professor at Missouri Univ of Science and Technology

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Author

Publications (9)

Proceedings Article | 19 March 2014 Paper

Determination of minor and trace elements in kidney stones by x-ray fluorescence analysis

Anjali Srivastava, Brianne Heisinger, Vaibhav Sinha, Hyong-Koo Lee, Xin Liu, Mingliang Qu, Xinhui Duan, Shuai Leng, Cynthia McCollough

Proceedings Volume 9033, 90335R (2014) https://doi.org/10.1117/12.2043733

KEYWORDS: Renal calculi, Molybdenum, Germanium, Selenium, Strontium, Zirconium, Bromine, Copper, Niobium, Kidney

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Proceedings Article | 19 March 2014 Paper

Anti-scatter grid evaluation for wide-cone CT

Roman Melnyk, John Boudry, Xin Liu, Mark Adamak

Proceedings Volume 9033, 90332P (2014) https://doi.org/10.1117/12.2043619

KEYWORDS: Sensors, Computed tomography, Calcium, Prototyping, Scanners, Signal detection, Molybdenum, X-ray sources, Photons, X-ray computed tomography

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Proceedings Article | 29 May 2013 Paper

Feasibility studies on explosive detection and homeland security applications using a neutron and x-ray combined computed tomography system

V. Sinha, A. Srivastava, H. Lee, X. Liu

Proceedings Volume 8710, 87100W (2013) https://doi.org/10.1117/12.2017988

KEYWORDS: X-ray imaging, X-rays, Explosives detection, Image fusion, Homeland security, Sensors, Explosives, Expectation maximization algorithms, Imaging systems, X-ray detectors

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The successful creation and operation of a neutron and X-ray combined computed tomography (NXCT) system has been demonstrated by researchers at the Missouri University of Science and Technology. The NXCT system has numerous applications in the field of material characterization and object identification in materials with a mixture of atomic numbers represented. Presently, the feasibility studies have been performed for explosive detection and homeland security applications, particularly in concealed material detection and determination of the light atomic number materials. These materials cannot be detected using traditional X-ray imaging. The new system has the capability to provide complete structural and compositional information due to the complementary nature of X-ray and neutron interactions with materials. The design of the NXCT system facilitates simultaneous and instantaneous imaging operation, promising enhanced detection capabilities of explosive materials, low atomic number materials and illicit materials for homeland security applications. In addition, a sample positioning system allowing the user to remotely and automatically manipulate the sample makes the system viable for commercial applications. Several explosives and weapon simulants have been imaged and the results are provided. The fusion algorithms which combine the data from the neutron and X-ray imaging produce superior images. This paper is a compete overview of the NXCT system for feasibility studies of explosive detection and homeland security applications. The design of the system, operation, algorithm development, and detection schemes are provided.

This is the first combined neutron and X-ray computed tomography system in operation. Furthermore, the method of fusing neutron and X-ray images together is a new approach which provides high contrast images of the desired object. The system could serve as a standardized tool in nondestructive testing of many applications, especially in explosives detection and homeland security research.

Proceedings Article | 6 March 2013 Paper

Monte Carlo simulation of bowtie filter scatter on a wide-cone low-dose CT system

Xin Liu, Anjali Srivastava, Hyoung-Koo Lee, Jiang Hsieh

Proceedings Volume 8668, 86685W (2013) https://doi.org/10.1117/12.2006618

KEYWORDS: Monte Carlo methods, X-rays, Optical filters, Image filtering, X-ray computed tomography, Sensors, Aluminum, Scanners, Photon transport, X-ray detectors

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Proceedings Article | 22 March 2010 Paper

A super resolution technique for clinical multislice CT

Xin Liu, Lifeng Yu, Armando Manduca, Erik Ritman, Cynthia McCollough

Proceedings Volume 7622, 76221Q (2010) https://doi.org/10.1117/12.844831

KEYWORDS: Image resolution, Super resolution, Spatial resolution, Sensors, Image quality, Data processing, X-rays, Computed tomography, X-ray computed tomography, Detection and tracking algorithms

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Proceedings Article | 22 March 2010 Paper

In vivo measurement of iron concentration using dual-source dual-energy CT

Paul Weavers, Megan Jacobsen, Xin Liu, Richard Morin, Cynthia McCollough

Proceedings Volume 7622, 76223N (2010) https://doi.org/10.1117/12.845322

KEYWORDS: Iron, Dual energy imaging, Tin, In vivo imaging, Computed tomography, Iodine, X-ray computed tomography, Liver, X-rays, Optical filters

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Proceedings Article | 14 March 2009 Paper

Pre-reconstruction three-material decomposition in dual-energy CT

Lifeng Yu, Xin Liu, Cynthia McCollough

Proceedings Volume 7258, 72583V (2009) https://doi.org/10.1117/12.813686

KEYWORDS: Iron, Bone, Error analysis, Computed tomography, Chemical analysis, Calibration, X-rays, Calcium, Signal attenuation, Statistical analysis

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Proceedings Article | 13 March 2009 Paper

Quantitative evaluation of noise reduction algorithms for very low dose renal CT perfusion imaging

Xin Liu, Andrew Primak, Lifeng Yu, Hua Li, James Krier, Lilach Lerman, Cynthia McCollough

Proceedings Volume 7258, 72581T (2009) https://doi.org/10.1117/12.813777

KEYWORDS: Signal to noise ratio, Denoising, Image processing, Modulation transfer functions, Linear filtering, Spatial resolution, Computed tomography, Image filtering, Anisotropic diffusion, Anisotropic filtering

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Proceedings Article | 25 March 2008 Paper

Quantitative imaging of chemical composition using dual-energy, dual-source CT

Xin Liu, Andrew Primak, Lifeng Yu, Cynthia McCollough, Richard Morin

Proceedings Volume 6913, 69134Z (2008) https://doi.org/10.1117/12.773042

KEYWORDS: Iron, X-ray computed tomography, Chemical elements, Liver, X-rays, Signal attenuation, Mass attenuation coefficient, Tissues, Magnesium, In vivo imaging

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Showing 5 of 9 publications

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