1988 …2019
If you made any changes in Pure, your changes will be visible here soon.

Research Output 1988 2019

Filter
Conference contribution
2019

Incorporating CT prior information in the robust fuzzy C-means algorithm for QSPECT image segmentation

Chen, J., Jha, A. K. & Frey, E. C., Jan 1 2019, Medical Imaging 2019: Image Processing. Angelini, E. D., Angelini, E. D., Angelini, E. D. & Landman, B. A. (eds.). SPIE, 109491W. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; vol. 10949).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Medical image processing
fuzzy systems
Nuclear medicine
Copying
nuclear medicine
2018

Short coherence dynamic Fizeau interferometer with internal path matching for radius of curvature measurement

North Morris, M. & Frey, E., Jan 1 2018, Interferometry XIX. Creath, K., Burke, J., Davies, A. D., North Morris, M. B. & Creath, K. (eds.). SPIE, Vol. 10749. 1074910

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fizeau Interferometer
Radius of curvature
Interferometers
interferometers
curvature
2017

No-gold-standard evaluation of image-acquisition methods using patient data

Jha, A. K. & Frey, E., 2017, Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment. SPIE, Vol. 10136. 101360L

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image acquisition
Gold
acquisition
gold
evaluation
2016

Applying the J-optimal channelized quadratic observer to SPECT myocardial perfusion defect detection

Kupinski, M. K., Clarkson, E., Ghaly, M. & Frey, E., 2016, Medical Imaging 2016: Image Perception, Observer Performance, and Technology Assessment. SPIE, Vol. 9787. 978708

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Single-Photon Emission-Computed Tomography
Area Under Curve
Perfusion
defects
Statistics

Development of a defect model for renal pediatric SPECT imaging research

Li, Y., O'Reilly, S., Plyku, D., Cao, X., Fahey, F., Bolch, W. E., Treves, S. T., Sgouros, G. & Frey, E., Oct 3 2016, 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015. Institute of Electrical and Electronics Engineers Inc., 7582174

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pediatrics
Single-Photon Emission-Computed Tomography
Nuclear medicine
nuclear medicine
Nuclear Medicine
2015

Estimating ROI activity concentration with photon-processing and photon-counting SPECT imaging systems

Jha, A. K. & Frey, E., 2015, Medical Imaging 2015: Physics of Medical Imaging. SPIE, Vol. 9412. 94120R

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Single photon emission computed tomography
Single-Photon Emission-Computed Tomography
Photons
Imaging systems
counting

Objective evaluation of reconstruction methods for quantitative SPECT imaging in the absence of ground truth

Jha, A. K., Song, N., Caffo, B. S. & Frey, E., 2015, Medical Imaging 2015: Image Perception, Observer Performance, and Technology Assessment. SPIE, Vol. 9416. 94161K

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Single photon emission computed tomography
ground truth
Single-Photon Emission-Computed Tomography
tomography
Imaging techniques

Optimization of energy window and evaluation of scatter compensation methods in MPS using the ideal observer with model mismatch

Ghaly, M., Links, J. M. & Frey, E., 2015, Medical Imaging 2015: Image Perception, Observer Performance, and Technology Assessment. SPIE, Vol. 9416. 94160N

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Single-Photon Emission-Computed Tomography
optimization
evaluation
Perfusion
Image processing

The effect of signal variability on the histograms of anthropomorphic channel outputs: Factors resulting in non-normally distributed data

Elshahaby, F. E. A., Ghaly, M., Jha, A. K. & Frey, E., 2015, Medical Imaging 2015: Image Perception, Observer Performance, and Technology Assessment. SPIE, Vol. 9416. 94160P

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nuclear Medicine
histograms
Nuclear medicine
Computer-Assisted Image Processing
output
2013

Evaluation of image quality using Channelized Hotelling observer for pediatric diagnostic imaging of 99mTc-dimercaptosuccinic acid

Lee, T-S., Bolch, W. E., Wayson, M. B., Treves, S. T., Sgouros, G. & Frey, E., 2013, IEEE Nuclear Science Symposium Conference Record. Institute of Electrical and Electronics Engineers Inc., 6829167

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Technetium Tc 99m Dimercaptosuccinic Acid
Diagnostic Imaging
Pediatrics
cut-off
acids

Model mismatch and the ideal observer in SPECT

Ghaly, M., Links, J. M., Du, Y. & Frey, E., 2013, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8673. 86730K

Research output: Chapter in Book/Report/Conference proceedingConference contribution

SPECT
Observer
acquisition
Model
human performance

Task-based evaluation of motion compensated reconstructed images using 4D channelized Hotelling observer in dual gated SPECT

Lee, T-S., Feng, T., Frey, E. & Tsui, B., 2013, IEEE Nuclear Science Symposium Conference Record. Institute of Electrical and Electronics Engineers Inc., 6829067

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Single-Photon Emission-Computed Tomography
evaluation
Noise
ROC Curve
Computer-Assisted Image Processing
2012

4D mathematical observer models for the task-based evaluation of gated myocardial perfusion SPECT images

Lee, T-S., Frey, E. & Tsui, B., 2012, IEEE Nuclear Science Symposium Conference Record. p. 2257-2260 4 p. 6551513

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Single-Photon Emission-Computed Tomography
Theoretical Models
Perfusion
evaluation
defects

The effect of non-rigid misregistration in sequential quantitative SPECT for targeted radionuclide therapy - A simulation study

Mok, G. S. P., Ao, E. C. I., Song, N. & Frey, E., 2012, IEEE Nuclear Science Symposium Conference Record. p. 2938-2941 4 p. 6551671

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Single-Photon Emission-Computed Tomography
Radioisotopes
organs
radioactive isotopes
therapy
2011

Material separation in x-ray CT with energy resolved photon-counting detectors

Wang, X., Meier, D., Taguchi, K., Wagenaar, D. J., Patt, B. E. & Frey, E., 2011, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7961. 79611V

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photons
counting
X-Rays
Detectors
X rays
2010

An analytical model of the effects of pulse pileup on the energy spectrum recorded by energy resolved photon counting x-ray detectors

Taguchi, K., Frey, E., Wang, X., Iwanczyk, J. S. & Barber, W. C., 2010, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 ed. Vol. 7622. 76221C

Research output: Chapter in Book/Report/Conference proceedingConference contribution

x ray detectors
Photons
Analytical models
counting
energy spectra

Binary ROC curve and three-class 2-D ROC surface

He, X. & Frey, E., 2010, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7627. 762710

Research output: Chapter in Book/Report/Conference proceedingConference contribution

ROC Curve
curves
Task Performance and Analysis
likelihood ratio
figure of merit

Microcomputed tomography with a second generation photon-counting x-ray detector - Contrast analysis and material separation

Wang, X., Meier, D., Oya, P., Maehlum, G. E., Wagenaar, D. J., Tsui, B., Patt, B. E. & Frey, E., 2010, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 ed. Vol. 7622. 76221B

Research output: Chapter in Book/Report/Conference proceedingConference contribution

x ray detectors
X-Ray Microtomography
Photons
Contrast Media
Tomography

Modeling spectral distortions in energy resolved photon-counting x-ray detector

Wang, X., Meier, D., Hugg, J., Chowdhury, S., Wagenaar, D., Patt, B. & Frey, E., 2010, IEEE Nuclear Science Symposium Conference Record. p. 3054-3057 4 p. 5874360

Research output: Chapter in Book/Report/Conference proceedingConference contribution

x ray detectors
Photons
counting
X-Rays
photons
2009

A digital line-camera for energy resolved x-ray photon counting

Wang, X., Meier, D., Sundal, B. M., Oya, P., Maehlum, G. E., Wagenaar, D. J., Patt, B. E., Tsui, B. & Frey, E., 2009, IEEE Nuclear Science Symposium Conference Record. p. 3453-3457 5 p. 5401785

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photons
counting
cameras
X-Rays
photons

Characterization of a novel photon counting detector for clinical CT: Count rate, energy resolution, and noise performance

Barber, W. C., Nygard, E., Iwanczyk, J. S., Zhang, M., Frey, E., Tsui, B., Wessel, J. C., Malakhov, N., Wawrzyniak, G., Hartsough, N. E., Gandhi, T. & Taguchi, K., 2009, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7258. 725824

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photons
Tomography
Noise
counting
tomography

Enhanced discrimination of calcified and soft arterial plaques using computed tomography with a multi-energy-Window photon counting X-ray detector

Wang, X., Xu, J., Taguchi, K., Frey, E., Patt, B. E. & Wagenaar, D. J., 2009, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7258. 72583W

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photons
Tomography
discrimination
counting
tomography
2008

Angular response function parameterization for collimator/detector in SPECT simulations within the GATE toolkit

Descourt, P., Du, Y., Song, X., Frey, E., Tsui, B. & Visvikis, D., 2008, IEEE Nuclear Science Symposium Conference Record. p. 4969-4971 3 p. 4774355

Research output: Chapter in Book/Report/Conference proceedingConference contribution

GARP Atlantic Tropical Experiment
collimators
Single-Photon Emission-Computed Tomography
Photons
parameterization

Instantaneous phase-shift Fizeau interferometer utilizing a synchronous frequency shift mechanism

Kimbrough, B., Frey, E. & Millerd, J., 2008, Interferometry XIV: Techniques and Analysis. Vol. 7063. 706307

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fizeau Interferometer
Phase Shift
Phase shift
Interferometers
frequency shift

Three-class ROC analysis - A sequential decision model developed for the diagnostic task rest-stress myocardial perfusion SPECT imaging

He, X. & Frey, E., 2008, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6917. 69170E

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Imaging techniques
Defects

Uniformity correction in photon-counting X-ray detector based on basis material decomposition

Wang, X., He, X., Taguchi, K., Patt, B. E., Wagenaar, D. J. & Frey, E., 2008, IEEE Nuclear Science Symposium Conference Record. p. 4902-4905 4 p. 4774338

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photons
counting
X-Rays
decomposition
detectors
2007

A Poisson likelihood iterative reconstruction algorithm for material decomposition in CT

Xu, J., Frey, E., Taguchi, K. & Tsui, B., 2007, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 2 ed. Vol. 6510. 65101Z

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Decomposition
Photons
Photoelectricity
Bins
Fans

Comparative assessment of ESSE and DEW scatter compensation methods for myocardial perfusion SPECT

Devakumar, D., He, X. & Frey, E., 2007, IEEE Nuclear Science Symposium Conference Record. Vol. 6. p. 4472-4474 3 p. 4437104

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Compensation and Redress
Detectors
Cutoff frequency
Full width at half maximum
Pixels

Describing three-class task performance: Three-class linear discriminant analysis and three-class ROC analysis

He, X. & Frey, E., 2007, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6515. 651502

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Discriminant analysis
Eigenvalues and eigenfunctions
Decision theory
Signal to noise ratio

Image-domain material decomposition using photon-counting CT

Taguchi, K., Zhang, M., Frey, E., Xu, J., Segars, W. P. & Tsui, B., 2007, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 ed. Vol. 6510. 651008

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bins
Tomography
Photons
Decomposition
X rays

Investigation of effects of volume-of-interest mis-registration on accuracy of organ activity estimates obtained with quantitative planar processing

Song, N., He, B. & Frey, E., 2007, IEEE Nuclear Science Symposium Conference Record. Vol. 4. p. 3105-3108 4 p. 4436787

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Processing
Planning
Image registration
Radioisotopes
Tumors

Investigation of the use of photon counting X-ray detectors with energy discrimination capability for material decomposition in micro-computed tomography

Frey, E., Wang, X., Du, Y., Taguchi, K., Xu, J. & Tsui, B., 2007, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 ed. Vol. 6510. 65100A

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tomography
Photons
Detectors
Decomposition
X rays

Markov chain Monte Carlo (MCMC) based ideal observer estimation using a parameterized phantom and a pre-calculated dataset

He, X., Caffo, B. S. & Frey, E., 2007, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6515. 651516

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Markov processes
Imaging techniques
Sampling
Imaging systems
Image processing

MicroComputed tomography with a photon-counting X-ray detector

Frey, E., Taguchi, K., Kapusta, M., Xu, J., Orskaug, T., Ninive, I., Wagenaar, D., Patt, B. & Tsui, B., 2007, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 ed. Vol. 6510. 65101R

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tomography
Photons
Detectors
X rays
Pixels

Optimization of energy window widths in basis material decomposition using a multi-window photon counting X-ray detector

Wang, X., Xu, J. & Frey, E. C., 2007, IEEE Nuclear Science Symposium Conference Record. Vol. 5. p. 3826-3829 4 p. 4436955

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Photons
Detectors
Decomposition
X rays
Chemical analysis

Optimization of gated liver FDG PET with non-uniform respiration

Shilov, M. A., Frey, E., Segars, W. P., Xu, J. & Tsui, B., 2007, IEEE Nuclear Science Symposium Conference Record. Vol. 4. p. 2594-2596 3 p. 4179552

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liver
Full width at half maximum
Monte Carlo simulation

Optimizing sensitivity-resolution trade-off using generalized detection/discrimination task and three-class ROC analysis

Volokh, L., He, X., Frey, E. & Tsui, B., 2007, IEEE Nuclear Science Symposium Conference Record. Vol. 3. p. 1692-1695 4 p. 4179337

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Imaging systems
Imaging techniques
Design of experiments

Simultaneous 99mTc/201Tl/123i triple-isotope cardiac SPECT imaging

Du, Y. & Frey, E., 2007, IEEE Nuclear Science Symposium Conference Record. Vol. 6. p. 4213-4216 4 p. 4437047

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Crosstalk
Isotopes
Imaging techniques
Contamination
Image acquisition

Toward time resolved cardiac CT images with patient dose reduction: Image-based motion estimation

Taguchi, K., Segars, W. P., Kudo, H., Frey, E., Fishman, E. K. & Tsui, B., 2007, IEEE Nuclear Science Symposium Conference Record. Vol. 4. p. 2029-2032 4 p. 4179426

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Motion estimation
Imaging techniques
Image reconstruction
Electrocardiography
Dosimetry
2006

Optimal observer framework and categorization observer framework for three-class ROC analysis

He, X. & Frey, E., 2006, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6146. 61460B

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Medical imaging
2005

Practical improvement of geometric parameter estimation for cone beam microCT imaging

Sawyer, S. A. & Frey, E., 2005, IEEE Nuclear Science Symposium Conference Record. Vol. 4. p. 2315-2319 5 p. 1596797

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Parameter estimation
Cones
Imaging techniques
Curve fitting
Pixels

Validation of the 4D NCAT simulation tools for use in high-resolution x-ray CT research

Segars, W. P., Mahesh, M., Beck, T., Frey, E. & Tsui, B., 2005, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Flynn, M. J. (ed.). II ed. Vol. 5745. p. 828-834 7 p. 94

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Quantum noise
X rays
Physiology
Dosimetry
Geometry
2004

An investigation of noise characteristics in OSEM reconstruction of fan beam SPECT using a rotating/warping projector/backprojector

Stumpf, M. J., Frey, E., Tsui, B. & Gullberg, G. T., 2004, IEEE Nuclear Science Symposium Conference Record. Seibert, J. A. (ed.). Vol. 6. p. 3948-3952 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bins
Fans
Convolution
Interpolation
Pixels

Development and validation of a Monte Carlo simulation tool for multi-pinhole microSPECT

Mok, S. P., Tsui, B., Wang, Y., Qi, Y., Du, Y., Segars, W. P., Yoder, B. C. & Frey, E., 2004, IEEE Nuclear Science Symposium Conference Record. Seibert, J. A. (ed.). Vol. 6. p. 3440-3444 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Imaging techniques
Image reconstruction
Data acquisition
Animals
Photons

Evaluation of rotating slant hole SPECT mammography with respect to planar scintimammography using Monte Carlo simulation methods

Liu, C., Tsui, B., Baird, W. H., Xu, J., Wang, Y. & Frey, E., 2004, IEEE Nuclear Science Symposium Conference Record. Seibert, J. A. (ed.). Vol. 7. p. 4063-4067 5 p. M10-308

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mammography
Full width at half maximum
Image quality
Iterative methods
Monte Carlo simulation
2003

A mathematical observer study for evaluation of a model-based compensation method for crosstalk in simultaneous dual isotope SPECT

Song, X., Frey, E., He, X., Segars, W. P. & Tsui, B., 2003, IEEE Nuclear Science Symposium Conference Record. Metzler, S. D. (ed.). Vol. 4. p. 2521-2525 5 p. M9-4

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Crosstalk
Isotopes
Set theory
Defects
Cutoff frequency

Comparison of penetration and scatter effects on defect contrast for GE and Siemens LEHR collimators in myocardial perfusion SPECT - A simulation study

He, X., Frey, E., Tsui, B., Song, X. & Tsui, B. M. W., 2003, IEEE Nuclear Science Symposium Conference Record. Metzler, S. D. (ed.). Vol. 4. p. 2905-2909 5 p. M11-263

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Defects
Photons
Computer aided manufacturing
Image quality
Imaging techniques

Extension of the 4D NCAT phantom to dynamic X-ray CT simulation

Segars, W. P., Tsui, B., Frey, E. & Fishman, E. K., 2003, IEEE Nuclear Science Symposium Conference Record. Metzler, S. D. (ed.). Vol. 5. p. 3195-3199 5 p. M14-315

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Imaging techniques
X rays
Physiology
Fans
Cones

Implementation of short-scan reconstruction with compensation for geometric alignment for a micro-CT system

Sawyer, S. A., Frey, E., He, B., Wang, Y. & Tsui, B., 2003, IEEE Nuclear Science Symposium Conference Record. Metzler, S. D. (ed.). Vol. 4. p. 2981-2984 4 p. M11-332

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Image quality
Animals
Detectors
Imaging techniques
X rays

Measurement and deconvolution of glare in a microCT scanner for in vivo small animal imaging

He, B., Frey, E., Song, X., Beck, T. J., Sawyer, S. A. & Tsui, B., 2003, IEEE Nuclear Science Symposium Conference Record. Metzler, S. D. (ed.). Vol. 4. p. 2764-2766 3 p. M10-337

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Glare
Deconvolution
Tomography
Animals
Imaging techniques