Dual energy computed tomography for explosive detection

By Zhengrong Ying, R. Naidu, C. Crawford. Journal of X-Ray Science and Technology, 2006

169 citations recorded by the source corpus.

Single energy computed tomography (CT) scanners use measurements of densities to detect explosives in luggage. It is desirable to apply dual energy techniques to these CT scanners to obtain atomic number measurements to reduce false alarm rates. However, the direct application of existing dual energy techniques has practical problems, such as, approximation errors and lack of boundary constraints in dual energy decomposition, image artifacts, and x-ray spectral drifts. In this paper, we present methods to reduce these problems. The methods include constrained dual energy decomposition, adaptive scatter correction, nonlinear filtering of decomposed projections, and real-time image-based correction for x-ray spectral drifts. We demonstrate the effectiveness of the methods using simulated data and real data obtained from a commercial dual energy CT scanner.

Subfields: Biomedical Engineering, Radiation, Radiology, Nuclear Medicine and Imaging

View Paper: https://www.semanticscholar.org/paper/90199ccccefb52a4071ca55ed9392d1697f5a5be

How researchers see this paper

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In Biomedical Engineering

1. Misha Elena Kilmer
2. Eric Lawrence Miller
3. Ning Hao
4. Oguz Semerci

In Radiology, Nuclear Medicine and Imaging

1. Misha Elena Kilmer
2. Eric Lawrence Miller
3. Ning Hao
4. Oguz Semerci
5. Yimin Wei
6. Liqun Qi
7. Yun Miao

Citations in the corpus

• Tensor-Based Formulation and Nuclear Norm Regularization for Multienergy Computed Tomography (2013, background): “The driving application of our work is security [5], [16], [17].”