Search Results - "Reutter, B.W"

Scintillator Non-Proportionality: Present Understanding and Future Challenges by Moses, W.W., Payne, S.A., Choong, W.-S., Hull, G., Reutter, B.W.

“…Scintillator non-proportionality (the fact that the conversion factor between the energy deposited in a scintillator and the number of visible photons produced…”
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Measurements of NaI(Tl) Electron Response: Comparison of Different Samples by Hull, G., Woon-Seng Choong, Moses, W.W., Bizarri, G., Valentine, J.D., Payne, S.A., Cherepy, N.J., Reutter, B.W.

“…This paper measures the sample to sample variation in the light yield proportionality of NaI(Tl), and so explores whether this is an invariant characteristic…”
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List-mode maximum-likelihood reconstruction applied to positron emission mammography (PEM) with irregular sampling by Huesman, R.H., Klein, G.J., Moses, W.W., Jinyi Qi, Reutter, B.W., Virador, P.R.G.

“…Presents a preliminary study of list-mode likelihood reconstruction of images for a rectangular positron emission tomograph (PET) specifically designed to…”
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Direct least-squares estimation of spatiotemporal distributions from dynamic SPECT projections using a spatial segmentation and temporal B-splines by Reutter, B.W., Gullberg, G.T., Huesman, R.H.

“…Artifacts can result when reconstructing a dynamic image sequence from inconsistent, as well as insufficient and truncated, cone beam single photon emission…”
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Comparison of rectangular and dual-planar positron emission mammography scanners by Jinyi Qi, Kuo, C., Huesman, R.H., Klein, G.J., Moses, W.W., Reutter, B.W.

“…Breast imaging using dedicated positron emission tomography (PEM) has gained much interest in the medical imaging field. In this paper, we compare the…”
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Accuracy and precision of compartmental model parameters obtained from directly estimated dynamic SPECT time-activity curves by Reutter, B.W., Gullberg, G.T., Huesman, R.H.

“…Quantitative kinetic analysis of dynamic cardiac single photon emission computed tomography (SPECT) data has the potential to provide better contrast between…”
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A study of changes in deformation and metabolism in the left ventricle as a function of hypertrophy in spontaneous hypertensive rats using microPET technology by Gullberg, G.T. Grant, Huesman, R.H., Reutter, B.W., Sitek, A., Veress, A.I., Weiss, J.A., Qi, J., Yang, Y.

“…Problem: In the case of hypertrophy caused by pressure overload (hypertension) there is an increase in cardiac mass and modification cardiac metabolism. Aim:…”
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8.24 by Gullberg, G.T., Boutchko, R., Sitek, A., Reutter, B.W., Botvinick, E.H.

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8.24: Dynamic cardiac SPECT with slow camera rotation by Gullberg, G.T., Boutchko, R., Sitek, A., Reutter, B.W., Botvinick, E.H.

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Real-time system for respiratory-cardiac gating in positron tomography by Klein, G.J., Reutter, B.W., Ho, M.H., Reed, J.H., Huesman, R.H.

“…A Macintosh-based signal processing system has been developed to support simultaneous respiratory and cardiac gating on the ECAT EXACT HR PET scanner. Using…”
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Non-rigid summing of gated PET via optical flow by Klein, G.J., Reutter, B.W., Huesman, R.H.

“…A method for summing together datasets from gated cardiac PET acquisitions is described. Optical flow techniques are used to accurately model non-rigid motion…”
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Patient motion correction in computed tomography by reconstruction on a moving grid by Boutchko, R., Balakrishnan, K., Reutter, B.W., Gullberg, G.T.

“…This work describes a method of motion correction in image reconstruction for both emission computed tomography and X-ray CT. The method assumes that moving…”
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Tissue spillover correction for dynamic pinhole SPECT studies of fatty acid metabolism in the rat heart by Reutter, B.W., Boutchko, R., Huesman, R.H., Sauve, A.C., Gullberg, G.T.

“…The goal of this research is to quantitatively compare fatty acid metabolism in the hearts of Wistar-Kyoto (WKY) normal rats and spontaneously hypertensive…”
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Kinetic parameter estimation from attenuated SPECT projection measurements by Reutter, B.W., Gullberg, G.T., Huesman, R.H.

“…Conventional analysis of dynamically acquired nuclear medicine data involves fitting kinetic models to time-activity curves generated from regions of interest…”
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Development of a high-sensitivity radiation detector for chromatography by Huber, J.S., Hanrahan, S.M., Moses, W.W., Derenzo, S.E., Reutter, B.W., O'Neil, J.P., Gullberg, G.T.

“…Radionuclide techniques will be increasingly important for the development of biofuels, since they can both uniquely characterize metabolic pathways and image…”
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Analysis of dynamic SPECT/CT measurements of the arterial input function in human subjects by Winant, C.D., Zelnik, Y.R., Reutter, B.W., Sitek, A., Bacharach, S.L., Gullberg, G.T., Aparici, C.M.

“…Measurement of the arterial input function (AIF) is essential to deriving quantitative estimates of regional myocardial blood flow using kinetic models…”
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Fully 4-D dynamic cardiac SPECT image reconstruction using spatiotemporal B-spline voxelization by Reutter, B.W., Gullberg, G.T., Boutchko, R., Balakrishnan, K., Botvinick, E.H., Huesman, R.H.

“…We developed fully 4-D penalized least-squares reconstruction methods that use overlapping multiresolution B-splines to represent radiopharmaceutical…”
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Radiotracer medical imaging technologies applied to environmental remediation systems by Boutchko, R., Reutter, B.W., Budinger, T.F., Taylor, S., O'Neil, J., Moses, W.W., Gullberg, G.T.

“…We demonstrate an alternate application of high-sensitivity radiotracer imaging technologies developed for nuclear medical imaging. There are several available…”
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Kinetic Parameter Estimation from Attenuated SPECT ProjectionMeasurements by Reutter, B.W., Gullberg, G.T., Huesman, R.H.

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Small animal imaging with attenuation correction using clinical SPECT/CT scanners by Boutchko, R., Balakrishnan, K., Reutter, B.W., Sauve, A., Gullberg, G.T.

“…Our group has previously reported on performing single photon emission tomography (SPECT) studies on rats, using a GE Hawkeye millennium SPECT-CT scanner with…”
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