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Object-space interpolation of SPECT system matrices from point-source measurements

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Abstract
Because of its accuracy, the measurement of a point source throughout the field of view of a PET or SPECT camera has been an attractive approach to derive system response. The procedure however is tedious; Instead, a coarse grid of discrete point source measurements may be experimentally measured while interpolation is used to derive the system response on a finer grid. Existing techniques suffer from the parameterization of the system response to a discrete number of variables. Here we propose an object-space interpolation that imposes no prior knowledge on the the geometric system response and can be widely applied for SPECT imaging systems of any kind. When using graphics hardware, the computational performance of this method enables its use for on-the-fly interpolation in iterative reconstruction, substantially reducing memory and storage requirements.
Keywords
interpolation, GPU., system matrix, SPECT

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Please use this url to cite or link to this publication:

MLA
Van Holen, Roel, Brian W Miller, Jared W Moore, et al. “Object-space Interpolation of SPECT System Matrices from Point-source Measurements.” Fully 3D 2011 Proceedings. 2011. 419–422. Print.
APA
Van Holen, R., Miller, B. W., Moore, J. W., Vandenberghe, S., & Barrett, H. H. (2011). Object-space interpolation of SPECT system matrices from point-source measurements. Fully 3D 2011 proceedings (pp. 419–422). Presented at the 11th International meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine (Fully 3D 11).
Chicago author-date
Van Holen, Roel, Brian W Miller, Jared W Moore, Stefaan Vandenberghe, and Harrison H Barrett. 2011. “Object-space Interpolation of SPECT System Matrices from Point-source Measurements.” In Fully 3D 2011 Proceedings, 419–422.
Chicago author-date (all authors)
Van Holen, Roel, Brian W Miller, Jared W Moore, Stefaan Vandenberghe, and Harrison H Barrett. 2011. “Object-space Interpolation of SPECT System Matrices from Point-source Measurements.” In Fully 3D 2011 Proceedings, 419–422.
Vancouver
1.
Van Holen R, Miller BW, Moore JW, Vandenberghe S, Barrett HH. Object-space interpolation of SPECT system matrices from point-source measurements. Fully 3D 2011 proceedings. 2011. p. 419–22.
IEEE
[1]
R. Van Holen, B. W. Miller, J. W. Moore, S. Vandenberghe, and H. H. Barrett, “Object-space interpolation of SPECT system matrices from point-source measurements,” in Fully 3D 2011 proceedings, Potsdam, Germany, 2011, pp. 419–422.
@inproceedings{1957498,
  abstract     = {Because of its accuracy, the measurement of a point source throughout the field of view of a PET or SPECT camera has been an attractive approach to derive system response. The procedure however is tedious; Instead, a coarse grid of discrete point source measurements may be experimentally measured while interpolation is used to derive the system response on a finer grid. Existing techniques suffer from the parameterization of the system response to a discrete number of variables. Here we propose an object-space interpolation that imposes no prior knowledge on the the geometric system response and can be widely applied for SPECT imaging systems of any kind. When using graphics hardware, the computational performance of this method enables its use for on-the-fly interpolation in iterative reconstruction, substantially reducing memory and storage requirements.},
  author       = {Van Holen, Roel and Miller, Brian W and Moore, Jared W and Vandenberghe, Stefaan and Barrett, Harrison H},
  booktitle    = {Fully 3D 2011 proceedings},
  keywords     = {interpolation,GPU.,system matrix,SPECT},
  language     = {eng},
  location     = {Potsdam, Germany},
  pages        = {419--422},
  title        = {Object-space interpolation of SPECT system matrices from point-source measurements},
  year         = {2011},
}