Title :
A study on spiral cone beam scanning mode for preclinical micro-CT
Author :
Deng, Junjun ; Yan, Shikui ; Yu, Hengyong ; Wang, Ge ; Chen, Mu
Author_Institution :
Mol. Imaging, Siemens Med. Solutions, USA, Inc., Knoxville, TN, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
In preclinical micro-CT, a circular scanning trajectory is widely used, and the Feldkamp algorithm is usually the standard reconstruction method to recover the images. This imaging mode has the advantages of fast reconstruction speed and good intra-slice resolution for images near the central plane. However, it shows cone-beam artifacts for images at relatively large cone angles. To address this problem, a spiral scanning trajectory is employed for the micro-CT. Spiral reconstruction algorithms were utilized to reconstruct the images and compared with the standard Feldkamp algorithm. The results show that the spiral approach delivers images with reduced cone beam artifacts.
Keywords :
computerised tomography; image reconstruction; image resolution; medical image processing; Feldkamp algorithm; circular scanning trajectory; imaging mode; intraslice resolution; preclinical microCT; spiral cone beam scanning mode; spiral reconstruction algorithms; spiral scanning trajectory; Biomedical imaging; Computed tomography; Image reconstruction; Nuclear and plasma sciences; Particle beams; Reconstruction algorithms; Spirals; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401850
