Unmatched projector/backprojector pairs in an iterative reconstruction algorithm
GL Zeng, GT Gullberg - IEEE transactions on medical imaging, 2000 - ieeexplore.ieee.org
Computational burden is a major concern when an iterative algorithm is used to reconstruct
a three-dimensional (3-D) image with attenuation, detector response, and scatter corrections…
a three-dimensional (3-D) image with attenuation, detector response, and scatter corrections…
Implementation of simultaneous attenuation and detector response correction in SPECT
…, HB Hu, DR Gilland, GT Gullberg - IEEE Transactions on …, 1988 - ieeexplore.ieee.org
Simultaneous correction of nonuniform attenuation and detector response was implemented
in single-photon-emission computed tomography (SPECT) image reconstruction. A ray-…
in single-photon-emission computed tomography (SPECT) image reconstruction. A ray-…
Three-dimensional reconstruction in nuclear medicine emission imaging
TF Budinger, GT Gullberg - IEEE Transactions on Nuclear …, 1974 - ieeexplore.ieee.org
The study presents application of methods of ascertaining the three-dimensional distribution
of isotope concentration or density in nuclear medicine, and differs from previous three-…
of isotope concentration or density in nuclear medicine, and differs from previous three-…
Reconstruction and visualization of fiber and laminar structure in the normal human heart from ex vivo diffusion tensor magnetic resonance imaging (DTMRI) data
Objective: The human heart is composed of a helical network of muscle fibers organized to
form sheets that are separated by cleavage planes responsible for the orthotropic mechanical …
form sheets that are separated by cleavage planes responsible for the orthotropic mechanical …
Emission computed tomography
TF Budinger, GT Gullberg, RH Huesman - Image reconstruction from …, 1979 - inis.iaea.org
[en] This chapter is devoted to the methods of computer assisted tomography for determination
of the three-dimensional distribution of gamma-emitting radionuclides in the human body. …
of the three-dimensional distribution of gamma-emitting radionuclides in the human body. …
[PDF][PDF] Correction of nonuniform attenuation in cardiac SPECT imaging
BMW Tsui, GT Gullberg, ER Edgerton… - Journal of Nuclear …, 1989 - Soc Nuclear Med
J Nuci Med 30: 497— 507, 1989 hile single photon emission computed tomogra phy (SPECT)
imaging has become a routine clinical procedure in nuclear medicine, the problem of …
imaging has become a routine clinical procedure in nuclear medicine, the problem of …
Dynamic single photon emission computed tomography—basic principles and cardiac applications
GT Gullberg, BW Reutter, A Sitek… - Physics in Medicine …, 2010 - iopscience.iop.org
The very nature of nuclear medicine, the visual representation of injected radiopharmaceuticals,
implies imaging of dynamic processes such as the uptake and wash-out of radiotracers …
implies imaging of dynamic processes such as the uptake and wash-out of radiotracers …
Estimation of geometrical parameters and collimator evaluation for cone beam tomography
GT Gullberg, BMW Tsui, CR Crawford… - Medical …, 1990 - Wiley Online Library
A method is presented for estimating the geometrical parameters for a cone beam detector
geometry from the coordinates of the centroid of a projected point source sampled over 360. …
geometry from the coordinates of the centroid of a projected point source sampled over 360. …
Application of spherical harmonics to image reconstruction for the Compton camera
R Basko, GL Zeng, GT Gullberg - Physics in Medicine & Biology, 1998 - iopscience.iop.org
The Compton camera can collect SPECT data with high efficiency due to electronic collimation.
The data acquired from a Compton camera are projections of source activity along cones …
The data acquired from a Compton camera are projections of source activity along cones …
An attenuated projector-backprojector for iterative SPECT reconstruction
GT Gullberg, RH Huesman, JA Malko… - Physics in Medicine …, 1985 - iopscience.iop.org
A new ray-driven projector-backprojector which can easily be adapted for hardware
implementation is described and simulated in software. The projector-backprojector discretely …
implementation is described and simulated in software. The projector-backprojector discretely …