Image reconstruction algorithm for a rotating slat collimator.

@article{Zeng2002ImageRA,
  title={Image reconstruction algorithm for a rotating slat collimator.},
  author={Gengsheng Lawrence Zeng and Daniel Gagnon and Christopher G. Matthews and Jeffery A. Kolthammer and Jason D. Radachy and William G. Hawkins},
  journal={Medical physics},
  year={2002},
  volume={29 7},
  pages={
          1406-12
        }
}
A slat collimator in single photon emission computed tomography consists of a set of parallel slats. As the collimator spins, the detector measures a one-dimensional projection data set. A complete data set can be obtained by rotating the detector/collimator assembly around the object (patient) while the collimator spins continuously. The measured projection data are assumed to be weighted planar integrals of the object. This paper describes the development of an approximate three-dimensional… 
Image reconstruction algorithm for a SPECT system with a convergent rotating slat collimator
In this paper, we suggest the use of a convergent rotating slat collimator in a SPECT system that contains strip-shaped CdZnTe detectors. This CdZnTe imaging device is able to provide better energy
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  • Physics
    2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515)
  • 2003
TLDR
This paper suggests the use of a sparse parallel slat collimator in a rotating SPECT camera using a new design that significantly simplifies the detector's hardware and reduces the detector spinning angle from 360/spl deg/ to 180/ spl deg/ for acquiring a complete data set.
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  • Mathematics
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  • 2006
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TLDR
This paper proposes a 3D RBI-EM reconstruction algorithm with spherically-symmetric basis function, also called 'blobs', for the slat collimator, which has a closed and spheric symmetric analytical expression for the 3D Radon transform, which makes it easier to compute the plane integral than the voxel.
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TLDR
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Image reconstruction algorithm for a spinning strip CZT SPECT camera with a parallel slat collimator and small pixels.
TLDR
This paper discusses the use of small pixels in a spinning CdZnTe single photon emission computed tomography (SPECT) camera that is mounted with a parallel slat collimator that has an advantage over the older design that uses tilted slats.
System characteristics of SPECT with a slat collimated strip detector.
TLDR
The validity of the calculations is proven by measuring the sensitivity in the FOV of a prototype rotating slat gamma camera and it is shown that for equal collimator dimensions the same resolution-distance relationship is obtained as for parallel hole collimators.
Optimizing the acquisition time profile for a planar integral measurement system with a spinning slat collimator.
TLDR
This article considers a hypothetical imaging device with a spinning slat collimator that measures parallel-planar-integral data from an object that has an optimal dwell-time profile and uses Nelder-Mead's simplex method to search for this optimal distribution of the scanning time among the data measurement locations.
Comparing planar image quality of rotating slat and parallel hole collimation: influence of system modeling.
TLDR
A comparative study of image quality, achieved with system modeling, is presented and shows that cold spot imaging is slightly better for a RS collimator than a classical PHcollimator, while hot spot contrast improvement is revealed up to 54% compared to a classicalPH bone scan.
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