Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2002.07a
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- Pages.184-187
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- 2002
3-D Inverse Radon Transform by Use of Tree-Structured Filter Bank
- Morikawa, Yoshitaka (Department of Communication Network Engineering, Faculty of Engineering, Okayama University) ;
- Murakami, Junichi (Department of Control Engineering, Takuma National College of Technology)
- Published : 2002.07.01
Abstract
Two-dimensional (2-D) X-ray computerized tomography (CT) equipments are widely used in industrial and medical fields, and nowadays studies on reconstruction algorithm for 3-D cone-beam acquisition systems are active for better utilization. The authors recent-By have proposed a fast reconstruction aigorithm using tree-structured filter bank for 2-D C1, and shown the algorithm is applicable to an approximate reconstruction of 3-D CT. For exact 3-D CT reconstruction, however, we have to backproject 1-D signal into 3-D space. This paper proposes a fast implementation method for this back-projection by use of tree-structured filter bank. and shows the proposed method works approximately 700 times faster than the direct one with almost same reconstruction image quality.
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