The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Simultaneous maximum a posteriori reconstruction of attenuation and activity distributions from emission sinograms
Abstract
In order to perform attenuation correction in emission tomography an attenuation map is required. We propose a new method to compute this map directly from the emission sinogram, eliminating the transmission scan from the acquisition protocol. The problem is formulated as an optimization task where the objective function is a combination of the likelihood and an a priori probability. The latter uses a Gibbs prior distribution to encourage local smoothness and a multimodal distribution for the attenuation coefficients. Since the attenuation process is different in positron emission tomography (PET) and single photon emission tomography (SPECT), a separate algorithm for each case is derived. The method has been tested on mathematical phantoms and on a few clinical studies. For PET, good agreement was found between the images obtained with transmission measurements and those produced by the new algorithm in an abdominal study. For SPECT, promising simulation results have been obtained for nonhomogeneous attenuation due to the presence of the lungs.
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Citations
Cites
Maximum Likelihood Reconstruction for Emission Tomography
Shepp, L. A., & Vardi, Y. (1982) · IEEE Transactions on Medical Imaging · doi:10.1109/tmi.1982.4307558 · Cited by 4,429
Cited by
Aide, N., Lasnon, C., Veit-Haibach, P., Sera, T., Sattler, B., & Boellaard, R. (2017) · European Journal of Nuclear Medicine and Molecular Imaging · doi:10.1007/s00259-017-3740-2 · Cited by 344
Hofmann, M., Bezrukov, I., Mantlik, F., Aschoff, P., Steinke, F., Beyer, T., Pichler, B. J., & Schölkopf, B. (2011) · Journal of Nuclear Medicine · doi:10.2967/jnumed.110.078949 · Cited by 288
Simultaneous Reconstruction of Activity and Attenuation in Time-of-Flight PET
Rezaei, A., Defrise, M., Bal, G., Michel, C., Conti, M., Watson, C., & Nuyts, J. (2012) · IEEE Transactions on Medical Imaging · doi:10.1109/tmi.2012.2212719 · Cited by 261
Self-citationMehranian, A., Arabi, H., & Zaidi, H. (2016) · Medical Physics · doi:10.1118/1.4941014 · Cited by 152
Boellaard, R., Rausch, I., Beyer, T., Delso, G., Yaqub, M., Quick, H. H., & Sattler, B. (2015) · Medical Physics · doi:10.1118/1.4930962 · Cited by 62
Metadata
- Authors
- Nuyts, J., Dupont, P., Stroobants, S., Benninck, R., Mortelmans, L., & Suetens, P.
- Venue
- IEEE Transactions on Medical Imaging
- Published
- 1999-05
- Volume
- 18
- Issue
- 5
- Pages
- 393-403
- ISSN
- 0278-0062 (ISSN-L)
- OpenAlex
- W2145537745
- Cited by
- 362
- References
- 1
- FWCI
- 6.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Nuyts, J., Dupont, P., Stroobants, S., Benninck, R., Mortelmans, L., & Suetens, P. (1999). Simultaneous maximum a posteriori reconstruction of attenuation and activity distributions from emission sinograms. IEEE Transactions on Medical Imaging. https://doi.org/10.1109/42.774167
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
