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
A sparse collimator for a rotating strip SPECT camera
  • G. Zeng, D. Gagnon
  • Physics
    2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515)
  • 2003
TLDR
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A single photon emission computed tomography (SPECT) rotating slat collimator with strip detector acquires distance-weighted plane integral data, along with the attenuation factor and
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Comparing planar image quality of rotating slat and parallel hole collimation: influence of system modeling
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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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A Rotating Scatter Mask for Inexpensive Gamma-Ray Imaging in Orphan Source Search: Simulation Results
TLDR
The Rotating Scatter Mask system is an inexpensive retrofit that provides imaging capabilities to scintillating detectors that was designed to search for lost or stolen radioactive material, also known as the orphan source problem.
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The substantially improved geometric efficiency of the slat collimator translated to improvements in reconstructed signal-to-noise ratio (SNR) by, at best, up to a factor of 2.0 with respect to standard parallel-hole collimation.
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Improved noise behaviour was observed for images acquired with the slat collimators compared to those acquired with a low-energy high-resolution (LEHR) collimator for small distributions of activity and improved contrast was observed in images of small hot regions.
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This paper presents an alternative to a conventional gamma camera. The proposed system is based on the combination of a new detection material - CZT - and a new acquisition geometry - 1D detector
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