Search Results - "Manglos, S H"

Transmission maximum-likelihood reconstruction with ordered subsets for cone beam CT by Manglos, S H, Gagne, G M, Krol, A, Thomas, F D, Narayanaswamy, R

“…An iterative algorithm is presented for accelerated reconstruction of cone beam transmission CT data (CBCT). CBCT supplies an attenuation map for SPECT…”
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Truncation artifact suppression in cone-beam radionuclide transmission CT using maximum likelihood techniques: evaluation with human subjects by Manglos, S H

“…Transverse image truncation can be a serious problem for human imaging using cone-beam transmission CT (CB-CT) implemented on a conventional rotating gamma…”
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Persistent pain inhibits contralateral somatosensory cortical activity in humans by Apkarian, A V, Stea, R A, Manglos, S H, Szeverenyi, N M, King, R B, Thomas, F D

“…To assess cortical activity during pain perception, regional cerebral blood flow (rCBF) studies were done in humans using single photon emission computed…”
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Phantom Study of Breast Tissue Attenuation in Myocardial Imaging by Manglos, Stephen H, Thomas, F. Deaver, Gagne, George M, Hellwig, Bradford J

“…The attenuation of photons by the breasts and other soft tissue overlying the chest may decrease the diagnostic accuracy of SPECT myocardial imaging. In this…”
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Maximum likelihood reconstruction for cone beam SPECT: development and initial tests by Manglos, S H, Jaszczak, R J, Floyd, C E

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Experimentally measured scatter fractions and energy spectra as a test of Monte Carlo simulations by Manglos, S H, Floyd, C E, Jaszczak, R J, Greer, K L, Harris, C C, Coleman, R E

“…A method for the validation of Monte Carlo photon transport calculations is presented, with particular emphasis on the scatter component of such calculations…”
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Cone-Beam Transmission Computed Tomography for Nonuniform Attenuation Compensation of SPECT Images by Manglos, Stephen H, Bassano, Daniel A, Thomas, F. Deaver

“…This paper develops and tests cone-beam transmission computed tomography (CB-CT) for attenuation compensation of SPECT images. CB-CT was implemented on a…”
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Imaging of the Human Torso Using Cone-Beam Transmission CT Implemented on a Rotating Gamma Camera by Manglos, Stephen H, Bassano, Daniel A, Thomas, F. Deaver, Grossman, Zachary D

“…Radionuclide transmission CT generated on a rotating gamma camera can improve SPECT imaging by providing attenuation maps for attenuation compensation and for…”
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Cone beam SPECT reconstruction with camera tilt by Manglos, S H, Jaszczak, R J, Greer, K L

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Nonisotropic Attenuation in SPECT: Phantom Tests of Quantitative Effects and Compensation Techniques by Manglos, Stephen H, Jaszczak, Ronald J, Floyd, Carey E, Hahn, Leszek J, Greer, Kim L, Coleman, R. Edward

“…A quantitative study of nonisotropic attenuation in SPECT imaging is presented. The study includes a case where the spatial distribution of the attenuation…”
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An EM algorithm for estimating SPECT emission and transmission parameters from emission data only by Krol, A., Bowsher, J.E., Manglos, S.H., Feiglin, D.H., Tornai, M.P., Thomas, F.D.

“…A maximum-likelihood (ML) expectation-maximization (EM) algorithm (called EM-IntraSPECT) is presented for simultaneously estimating single photon emission…”
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Cone beam collimation for single photon emission computed tomography: analysis, simulation, and image reconstruction using filtered backprojection by Jaszczak, R J, Floyd, Jr, C E, Manglos, S H, Greer, K L, Coleman, R E

“…This paper presents an analysis of two cone beam configurations (having focal lengths of 40 and 60 cm) for the acquisition of single photon emission computed…”
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Noise characteristics for cone beam collimators: a comparison with parallel hole collimator by Hahn, L J, Jaszczak, R J, Gullberg, G T, Floyd, C E, Manglos, S H, Greer, K L, Coleman, R E

“…In order to evaluate the properties of a cone beam (CB) collimator and three-dimensional filtered backprojection algorithm, the noise characteristics of this…”
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Practical evaluation of several cone beam orbits for SPECT by Manglos, S.H., Smith, B.D.

“…Several alternative orbits have been suggested for cone beam single photon emission computed tomography (SPECT), since the standard circular orbit provides…”
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Detection nonuniformity measurements and corrections for cone beam transmission CT on a gamma camera by Manglos, S H, Capone, R B, Bassano, D A

“…Cone beam transmission CT (CB-CT) improves SPECT imaging by providing high-quality attenuation maps for attenuation compensation and for correlated SPECT and…”
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Attenuation compensation of cone beam SPECT images using maximum likelihood reconstruction by Manglos, S.H., Thomas, F.D., Capone, R.B.

“…Attenuation compensation for cone beam single-photon emission computed tomography (SPECT) imaging is performed by cone beam maximum likelihood reconstruction…”
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Weighted backprojection implemented with a non-uniform attenuation map for improved SPECT quantitation by Manglos, S.H., Jaszczak, R.J., Floyd, C.E.

“…A method is developed to improve quantitation in single-photon-emission computed tomography (SPECT) imaging by using an attenuation compensation method that…”
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Compensation for collimator divergence in SPECT using inverse Monte Carlo reconstruction by Floyd, C.E., Jaszczak, R.J., Manglos, S.H., Coleman, R.E.

“…The inverse Monte Carlo (IMC) reconstruction algorithm achieved compensation for two degrading collimator effects in SPECT (single-photon-emission computed…”
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Maximum likelihood reconstruction for cone beam SPECT with camera tilt by Manglos, S.H., Jaszczak, R.J., McAfee, J.G.

“…Iterative maximum-likelihood (ML) reconstruction techniques are extended to the cone-beam SPECT (single-photon-emission computed tomography) geometry with the…”
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Attenuation maps for SPECT determined using cone beam transmission computed tomography by Manglos, S.H., Bassano, D.A., Duxbury, C.E., Capone, R.B.

“…A novel method for measuring nonuniform attenuation maps is presented. A cone beam geometry CT (computed tomography) scan acquired on a standard rotating gamma…”
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