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CT reconstruction by using the MLS-ART technique and the KCD imaging system. I. Low-energy X-ray studies

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4 Author(s)
Huaiqun Guan ; Dept. of Radiat. Oncology, St. Jude Children's Res. Hosp., Memphis, TN, USA ; M. Waleed Gaber ; F. A. DiBianca ; Yunping Zhu

The authors investigated the use of the kinestatic charge detector (KCD) combined with the multilevel scheme algebraic reconstruction technique (MLS-ART) for X-ray computer tomography (CT) reconstruction. The KCD offers excellent detective quantum efficiency and contrast resolution. These characteristics are especially helpful for applications in which a limited number of projections are used. In addition, the MLS-ART algorithm offers better contrast resolution than does the conventional convolution backprojection (CBP) technique when the number of projections is limited. Here, the authors present images of a Rando-head phantom that was reconstructed by using the KCD and MLS-ART. The authors also present, for comparison, the images reconstructed by using the CBP technique. The combination of MLS-ART and the KCD yielded satisfactory images after just one or two iterations.

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IEEE Transactions on Medical Imaging  (Volume:18 ,  Issue: 4 )