Title :
A Reconstruction Algorithm for Helical CT Imaging on PI-planes
Author :
Liang, Hongzhu ; Zhang, Cishen ; Yan, Ming
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ.
fDate :
Aug. 30 2006-Sept. 3 2006
Abstract :
In this paper, a Feldkamp type approximate reconstruction algorithm is presented for helical cone-beam Computed Tomography. To effectively suppress artifacts due to large cone angle scanning, it is proposed to reconstruct the object pointwisely on unique customized tilted PI-planes which are close to the data collecting helices of the corresponding points. Such a reconstruction scheme can considerably suppress the artifacts in the cone-angle scanning. Computer simulations show that the proposed algorithm can provide improved imaging performance compared with the existing approximate cone-beam reconstruction algorithms
Keywords :
computerised tomography; digital simulation; image reconstruction; medical image processing; Feldkamp type approximate reconstruction algorithm; artifact suppression; computer simulation; cone angle scanning; helical cone-beam computed tomography; helical multislice CT imaging; improved imaging performance; pointwise object reconstruction; unique customized tilted PI-planes; Biomedical engineering; Chemical technology; Computational efficiency; Computed tomography; Computer simulation; Detectors; Geometry; Image quality; Image reconstruction; Reconstruction algorithms; Feldkamp-type reconstruction; Half-scan CT; Helical multislice CT;
Conference_Titel :
Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0032-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2006.259791
