Abstract
We present 3D reconstruction algorithms that address fully 3D tomographic reconstruction using septaless, stationary, and rectangular cameras. The field of view (FOV) encompasses the entire volume enclosed by detector modules capable of measuring depth of interaction (DOI). The Filtered Backprojection based algorithms incorporate DOI, accommodate irregular sampling, and minimize interpolation in the data by defining lines of responses between the measured interaction points. We use fixed-width, evenly spaced radial bins in order to use the FFT, but use irregular angular sampling to minimize the number of unnormalizable zero efficiency sinogram bins (ZEB). To address persisting ZEBs, we perform 2D nearest neighbor radial smoothing, employ a semi-iterative procedure to estimate the unsampled data, and mash the "in plane" and the first oblique projections to reconstruct the 2D image in the 3DRP algorithm. We present artifact free, essentially spatially isotropic images of Monte Carlo data with FWHM resolutions of 1.50 mm, 2.25 mm, and 3.00 mm at the center, in the bulk, and at the edges and comers of the FOV respectively.
| Original language | English (US) |
|---|---|
| Title of host publication | IEEE Nuclear Science Symposium and Medical Imaging Conference |
| Editors | D. Merelli, J. Surget, M. Ulma |
| Volume | 2 |
| State | Published - 2000 |
| Event | 2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France Duration: Oct 15 2000 → Oct 20 2000 |
Other
| Other | 2000 IEEE Nuclear Science Symposium Conference Record |
|---|---|
| Country | France |
| City | Lyon |
| Period | 10/15/00 → 10/20/00 |
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ASJC Scopus subject areas
- Computer Vision and Pattern Recognition
- Industrial and Manufacturing Engineering
Cite this
3D reconstruction in PET cameras with irregular sampling and depth of interaction. / Virador, P. R G; Moses, W. W.; Huesman, R. H.; Qi, J.
IEEE Nuclear Science Symposium and Medical Imaging Conference. ed. / D. Merelli; J. Surget; M. Ulma. Vol. 2 2000.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - 3D reconstruction in PET cameras with irregular sampling and depth of interaction
AU - Virador, P. R G
AU - Moses, W. W.
AU - Huesman, R. H.
AU - Qi, J.
PY - 2000
Y1 - 2000
N2 - We present 3D reconstruction algorithms that address fully 3D tomographic reconstruction using septaless, stationary, and rectangular cameras. The field of view (FOV) encompasses the entire volume enclosed by detector modules capable of measuring depth of interaction (DOI). The Filtered Backprojection based algorithms incorporate DOI, accommodate irregular sampling, and minimize interpolation in the data by defining lines of responses between the measured interaction points. We use fixed-width, evenly spaced radial bins in order to use the FFT, but use irregular angular sampling to minimize the number of unnormalizable zero efficiency sinogram bins (ZEB). To address persisting ZEBs, we perform 2D nearest neighbor radial smoothing, employ a semi-iterative procedure to estimate the unsampled data, and mash the "in plane" and the first oblique projections to reconstruct the 2D image in the 3DRP algorithm. We present artifact free, essentially spatially isotropic images of Monte Carlo data with FWHM resolutions of 1.50 mm, 2.25 mm, and 3.00 mm at the center, in the bulk, and at the edges and comers of the FOV respectively.
AB - We present 3D reconstruction algorithms that address fully 3D tomographic reconstruction using septaless, stationary, and rectangular cameras. The field of view (FOV) encompasses the entire volume enclosed by detector modules capable of measuring depth of interaction (DOI). The Filtered Backprojection based algorithms incorporate DOI, accommodate irregular sampling, and minimize interpolation in the data by defining lines of responses between the measured interaction points. We use fixed-width, evenly spaced radial bins in order to use the FFT, but use irregular angular sampling to minimize the number of unnormalizable zero efficiency sinogram bins (ZEB). To address persisting ZEBs, we perform 2D nearest neighbor radial smoothing, employ a semi-iterative procedure to estimate the unsampled data, and mash the "in plane" and the first oblique projections to reconstruct the 2D image in the 3DRP algorithm. We present artifact free, essentially spatially isotropic images of Monte Carlo data with FWHM resolutions of 1.50 mm, 2.25 mm, and 3.00 mm at the center, in the bulk, and at the edges and comers of the FOV respectively.
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M3 - Conference contribution
VL - 2
BT - IEEE Nuclear Science Symposium and Medical Imaging Conference
A2 - Merelli, D.
A2 - Surget, J.
A2 - Ulma, M.
ER -