Information analysis of single photon emission computed tomography with count losses.

@article{Hero1990InformationAO,
  title={Information analysis of single photon emission computed tomography with count losses.},
  author={Alfred O. Hero and Lingxiong Shao},
  journal={IEEE transactions on medical imaging},
  year={1990},
  volume={9 2},
  pages={
          117-27
        }
}
  • A. Hero, L. Shao
  • Published 1990
  • Physics
  • IEEE transactions on medical imaging
An analysis is presented of the information transfer from emitter-space to detector-space in single photon emission computed tomography (SPECT) systems. The analysis takes into account the fact that count loss side information is generally not available at the detector. Side information corresponds to the number gamma-rays lost deleted due to lack of interaction with the detector data. It is shown that the information transfer depends on the structure of the likelihood function of the emitter… 

Figures from this paper

Information gain from count corrections in SPECT image reconstruction and classification
TLDR
Results of analysis and numerical study indicate that the information gain associated with using count correction data is much more significant for reconstruction of the emitters than for classification of the emitter density when the total detected fluence is low.
Information analysis for 3D SPECT imaging of radionuclide distributions in attenuating objects
The existing communication model of SPECT studies is extended by including the attenuating medium in the communication channel. Based on the extended model two fundamental theorems are presented to
Objective assessment of image quality. II. Fisher information, Fourier crosstalk, and figures of merit for task performance.
TLDR
The figures of merit for detection tasks are shown to be closely related to the concepts of noise-equivalent quanta (NEQ) and generalized NEQ, originally derived for linear, shift-invariant imaging systems and stationary noise.
Fluorescence optical diffusion tomography using multiple-frequency data.
  • A. Milstein, J. Stott, K. Webb
  • Physics
    Journal of the Optical Society of America. A, Optics, image science, and vision
  • 2004
A method is presented for fluorescence optical diffusion tomography in turbid media using multiple-frequency data. The method uses a frequency-domain diffusion equation model to reconstruct the
Collimator design for single photon emission tomography
TLDR
The well-known imaging performance parameters of parallel-hole collimators are compared with those of fan-beam collimulators, which have enjoyed considerable success in recent years, particularly for brain SPET.
Imaging of near-infrared fluorescence, absorption, and scatter in turbid media
Milstein, Adam B. Ph.D., Purdue University, August, 2004. Imaging of near-infrared fluorescence, absorption, and scatter in turbid media. Major Professor: Charles A. Bouman and Kevin J. Webb. A
A recursive algorithm for computing Cramer-Rao- type bounds on estimator covariance
TLDR
A statistical approach to selecting the splitting matrix based on a "complete-data-incomplete- data" formulation similar to that of the well-known EM parameter estimation algorithm is presented.
A Recursive Algorithm for Computing Cr-type Bounds on Estimator Covariance 1
TLDR
An iterative algorithm is derived that calculates submatrices of the Cram er-Rao (CR) matrix bound on the covariance of any unbiased estimator of a vector parameter bound with exponential speed of convergence.

References

SHOWING 1-10 OF 17 REFERENCES
The mutual information criterion for SPECT aperture evaluation and design.
TLDR
An aperture performance criterion for single-photon-emission computed tomography (SPECT) that is based on the mutual information (MI) between the source and detector processes is proposed and takes account of the inherent tradeoffs between the effects of sensitivity and resolution on source estimation accuracy.
The effect of detector performance on high count rate PET imaging with a tomograph based on position-sensitive detectors
Emission-computed tomography systems using large position-sensitive detectors must handle high event rates per detector during dynamic studies. To determine the ability of their positron-emission
Maximum Likelihood Reconstruction for Emission Tomography
TLDR
A more accurate general mathematical model where an unknown emission density ¿ = x, y, z generates, and is to be reconstructed from, the number of counts n*(d) in each of D detector units d is given.
Application of information theory to the assessment of computed tomography.
TLDR
Examples are drawn from first and second generation CT, demonstrating that thye are nearly quantum limited for large signals, indicating how their algorithms are matched or mismatched to the geometry, and calculating the contrast-detail diagrams for those decision makers.
The information content of MR images.
  • M. Fuderer
  • Physics
    IEEE transactions on medical imaging
  • 1988
The theoretical information content, defined by C.E. Shannon (1948), is proposed as an objective measure of MR (magnetic resonance) image quality. This measure takes into account the
Inverse problems = Quest for information
TLDR
The inverse problem may be formulated as a problem of combination of information: the experimental information about data, the a priori information about parameters, and the theoretical information, and it is shown that the general solution of the non-linear inverse problem is unique and consistent.
Information rates for Poisson sequences
  • I. Rubin
  • Computer Science
    IEEE Trans. Inf. Theory
  • 1973
TLDR
The rate-distortion function of a Poisson sequence, under a single-letter magnitude-error distortion measure, is derived and an upper bound is generated by a simple instrumentable coding scheme.
; 0 ;
! " # $% & ' $ ( #) % ( ) %*+, -. ) / 0 1 ' 2 ( 3 '4 $ $ 5 2 6 "7 8 8 9:/ ( ; <= 6 1 ( > 9: ? =: 0 $ > 0:/5 ? <:/5 2 / $ ) /== @ 9@=== @ 9@/== @ @=== $ @/== A 1 2 B ; B# '2 ) ; ( ; % ( > <:< ? :< @
...
...