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Fully three-dimensional reconstruction for a PET camera with retractable septa
Abstract
A fully 3-D reconstruction algorithm has been developed to reconstruct data from a 16 ring PET camera (a Siemens/CTI 953B) with automatically retractable septa. The tomograph is able to acquire coincidences between any pair of detector rings and septa retraction increases the total system count rate by a factor of 7.8 (including scatter) and 4.7 (scatter subtracted) for a uniform, 20 cm diameter cylinder. The reconstruction algorithm is based on 3-D filtered backprojection, expressed in a form suitable for the multi-angle sinogram data. Sinograms which are not measured due to the truncated cylindrical geometry of the tomograph, but which are required for a spatially invariant response function, are obtained by forward projection. After filtering, the complete set of sinograms is backprojected into a 3-D volume of 128x128x31 voxels using a voxel-driven procedure. The algorithm has been validated with simulation, and tested with both phantom and clinical data from the 953B.
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Cited by
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Friston, K. J., Holmes, A. P., Worsley, K. J., Poline, J. ‐., Frith, C. D., & Frackowiak, R. S. J. (1994) · Human Brain Mapping · doi:10.1002/hbm.460020402 · Cited by 9,688
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Paulesu, E., Frith, C. D., & Frackowiak, R. S. J. (1993) · Nature · doi:10.1038/362342a0 · Cited by 2,230
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Attenuation correction for a combined 3D PET/CT scanner
Kinahan, P. E., Townsend, D. W., Beyer, T., & Sashin, D. (1998) · Medical Physics · doi:10.1118/1.598392 · Cited by 946
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Metadata
- Authors
- Townsend, D. W., Geissbuhler, A., Defrise, M., Hoffman, E. J., Spinks, T. J., Bailey, D. L., Gilardi, M.-C., & Jones, T.
- Venue
- IEEE Transactions on Medical Imaging
- Published
- 1991
- Volume
- 10
- Issue
- 4
- Pages
- 505-512
- ISSN
- 0278-0062 (ISSN-L)
- OpenAlex
- W2098971073
- Cited by
- 193
- References
- 0
- FWCI
- 15.40
- Type
- journal article
- Language
- en
- Open access
- closed
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- Townsend, D. W., Geissbuhler, A., Defrise, M., Hoffman, E. J., Spinks, T. J., Bailey, D. L., Gilardi, M.-C., & Jones, T. (1991). Fully three-dimensional reconstruction for a PET camera with retractable septa. IEEE Transactions on Medical Imaging. https://doi.org/10.1109/42.108584
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