Referenced Items are not available for this document.
Fan-beam collimators with spatially varying focal lengths are used in single photon emission computed tomography (SPECT) to improve the imaging sensitivity and to reduce the reconstruction artifacts resulting from the truncation of projection data. An angular representation of the detector coordinates for the projection data is adopted to investigate several aspects of the reconstruction problem for this type of collimation. A rebinning reconstruction algorithm is derived. We prove a conjecture posed by Zeng and Gullberg (1994) and obtain a simplified form of their backprojection filtering algorithm. Some computer simulations are presented to investigate the performance of the rebinning algorithm.
Published in:
Medical Imaging, IEEE Transactions on
(Volume:16
,
Issue:
5
)
Date of Publication: Oct. 1997
- Page(s):
- 527 - 531
- ISSN :
- 0278-0062
- INSPEC Accession Number:
- 5762756
- Digital Object Identifier :
- 10.1109/42.640742
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Oct. 1997
- Sponsored by :
- IEEE Engineering in Medicine and Biology Society
- PubMed ID :
- 9368108
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