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http://dx.doi.org/10.9718/JBER.2008.29.1.046

Backprojection Filtering Method for Limited Angle Tomography  

Cho, Min-Kook (School of Mechanical Engineering, Pusan National University)
Kim, Ho-Kyung (School of Mechanical Engineering, Pusan National University)
Yin, Z-Hye (Computed Tomography System and Application Laboratory, GE Global Research Center)
Kim, Tae-Woo (Advanced Medical Engineering Laboratory, Value Added Technologies, Co., Ltd.)
Publication Information
Journal of Biomedical Engineering Research / v.29, no.1, 2008 , pp. 46-51 More about this Journal
Abstract
We describe a backprojection filtering method for limited angle tomography. In order to reduce blur artifacts originated from the out-of-planes and control high-frequency noise, we employed two band-limited window functions, and which were realized by Hann filters in this study. Based on the experimentally measured data, the performance of the developed method is demonstrated by comparing with the conventional shift-and-add and filtered backprojection methods. Application of the developed method to the dental imaging has a potential to be used for the preoperative evaluation of the jaw for dental implants with much reduced patient dose instead of the conventional dental computed tomography.
Keywords
computed tomography; limited angle tomography; digital tomosynthesis;
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Times Cited By KSCI : 1  (Citation Analysis)
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