Prof. Taly Gilat Schmidt Profile

Prof. Taly Gilat Schmidt

Professor of Biomedical Engineering at Marquette Univ

SPIE Involvement:

Conference Program Committee | Author | Editor

Publications (37)

Proceedings Article | 7 April 2023 Poster + Paper

Material decomposition for photon-counting CT using a flux-independent neural network

James Castiglioni, Emil Sidky, Taly Gilat Schmidt

Proceedings Volume 12463, 124634A (2023) https://doi.org/10.1117/12.2655714

KEYWORDS: Polymethylmethacrylate, Aluminum, Neural networks, Diagnostics, Calibration, X-rays

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Proceedings Article | 7 April 2023 Poster + Paper

Experimental dual-kV reconstructions of objects containing metal using the cOSSCIR algorithm

Benjamin Rizzo, Emil Sidky, Taly Gilat Schmidt

Proceedings Volume 12463, 124634C (2023) https://doi.org/10.1117/12.2655724

KEYWORDS: X-rays, Reconstruction algorithms, Titanium, X-ray imaging, X-ray detectors, Spectral response, Image restoration, CT reconstruction, Spectral computed tomography

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Proceedings Article | 6 March 2023 Presentation + Paper

Analysis of deep ultraviolet fluorescence images for intraoperative breast tumor margin assessment

Tongtong Lu, Julie Jorns, Dong Hye Ye, Mollie Patton, Taly Gilat-Schmidt, Tina Yen, Bing Yu

Proceedings Volume 12368, 1236806 (2023) https://doi.org/10.1117/12.2649552

KEYWORDS: Tumors, Image classification, Feature extraction, Breast, Surgery, Image processing, Deep ultraviolet, Machine learning

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Proceedings Article | 18 October 2022 Open Access

Material decomposition from unregistered dual kV data using the cOSSCIR algorithm

Benjamin Rizzo, Emil Sidky, Taly Gilat Schmidt

Proceedings Volume 12304, 123042F (2022) https://doi.org/10.1117/12.2647034

KEYWORDS: Dual energy imaging, Image restoration, X-ray computed tomography, Spectral computed tomography

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Proceedings Article | 15 February 2021 Presentation + Paper

Stability of a spectral calibration model with non-linear intensity correction for photon-counting detectors

Emily Paul, Emil Sidky, Taly Gilat-Schmidt, Xiaochuan Pan

Proceedings Volume 11595, 115951Y (2021) https://doi.org/10.1117/12.2581246

KEYWORDS: Calibration, Spectral calibration, Sensors, Photodetectors, Spectral models, Zinc, Polymethylmethacrylate, Photons, Computed tomography, Biological research

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Proceedings Article | 15 February 2021 Presentation + Paper

Enhancing reproductive organ segmentation in pediatric CT via adversarial learning

Chi Nok Enoch Kan, Taly Gilat-Schmidt, Dong Hye Ye

Proceedings Volume 11596, 1159612 (2021) https://doi.org/10.1117/12.2582127

KEYWORDS: Image segmentation, Computed tomography, Uterus, Prostate, Ionizing radiation

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Proceedings Article | 15 February 2021 Presentation + Paper

Non-linear partial volume artifact reduction in spectral CT one step direct inversion reconstruction

Benjamin Rizzo, Emil Sidky, Taly Gilat Schmidt

Proceedings Volume 11595, 115951X (2021) https://doi.org/10.1117/12.2582236

KEYWORDS: Metals, Sensors, Data modeling, X-ray computed tomography, Photons, Signal attenuation, X-rays, Reconstruction algorithms, Pathology, Image restoration

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SPIE Journal Paper | 9 January 2021 Open Access

Experimental study of photon-counting CT neural network material decomposition under conditions of pulse pileup

Parker J. Jenkins, Taly Gilat Schmidt

JMI, Vol. 8, Issue 01, 013502, (January 2021) https://doi.org/10.1117/12.10.1117/1.JMI.8.1.013502

KEYWORDS: Sensors, Polymethylmethacrylate, Aluminum, Neural networks, Calibration, X-rays, X-ray computed tomography, Signal attenuation, Photodetectors, Data acquisition

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SPIE Journal Paper | 25 November 2020 Open Access

Rapid assessment of breast tumor margins using deep ultraviolet fluorescence scanning microscopy

Tongtong Lu, Julie Jorns, Mollie Patton, Renee Fisher, Amanda Emmrich, Todd Doehring, Taly Gilat Schmidt, Dong Hye Ye, Tina Yen, Bing Yu

JBO, Vol. 25, Issue 12, 126501, (November 2020) https://doi.org/10.1117/12.10.1117/1.JBO.25.12.126501

KEYWORDS: Tissues, Breast, Luminescence, Tumors, Deep ultraviolet, Natural surfaces, Cancer, Visualization, Surgery, Tissue optics

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Proceedings Article | 16 March 2020 Presentation + Paper

Spectral CT metal artifact reduction using weighted masking and a one step direct inversion reconstruction algorithm

Taly Gilat Schmidt, Rina Foygel Barber, Emil Sidky

Proceedings Volume 11312, 113121F (2020) https://doi.org/10.1117/12.2550337

KEYWORDS: Metals, Sensors, Reconstruction algorithms, Binary data, Image filtering, X-ray computed tomography, Photon counting

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Proceedings Article | 16 March 2020 Paper

Evaluation of deep learning segmentation for rapid, patient-specific CT organ dose estimation using an LBTE solver

Michael Offe, David Fraley, Philip Adamson, Sara Principi, Adam Wang, Petr Jordan, Taly Gilat Schmidt

Proceedings Volume 11312, 113124O (2020) https://doi.org/10.1117/12.2550314

KEYWORDS: Computed tomography, Error analysis, Statistical analysis, Algorithm development, Data modeling, Network architectures, Heart, Image segmentation, Software development

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Proceedings Article | 1 March 2019 Presentation + Paper

Experimental study of neural network material decomposition to account for pulse-pileup effects in photon-counting spectral CT

Parker Jenkins, Taly Gilat Schmidt

Proceedings Volume 10948, 109481Y (2019) https://doi.org/10.1117/12.2513447

KEYWORDS: Polymethylmethacrylate, Neural networks, Aluminum, Sensors, Computed tomography, Calibration, Data acquisition, Signal attenuation, Photodetectors, X-rays

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Proceedings Article | 1 March 2019 Paper

Using one test bolus to monitor bolus arriving at two locations in CT angiography runoff scans: a feasibility simulation study

Hongfeng Ma, Mingye Wu, Christine Hammond, Taly Gilat Schmidt

Proceedings Volume 10948, 109482K (2019) https://doi.org/10.1117/12.2513292

KEYWORDS: Image contrast enhancement, Blood, Aorta, Monte Carlo methods, X-ray computed tomography, Arteries, Computer simulations, Angiography, Computed tomography, X-rays, Scanners

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Proceedings Article | 9 March 2018 Paper

Automated exposure control for CT using a task-based image quality metric

P. Khobragade, Jiahua Fan, Franco Rupcich, Dominic Crotty, Taly Gilat Schmidt

Proceedings Volume 10573, 1057316 (2018) https://doi.org/10.1117/12.2294625

KEYWORDS: Reconstruction algorithms, Image quality, Modulation transfer functions, Computed tomography, Spatial resolution, Radiology

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Proceedings Article | 10 March 2017 Paper

Fractal dimension metric for quantifying noise texture of computed tomography images

P. Khobragade, Jiahua Fan, Franco Rupcich, Dominic Crotty, Taly Gilat Schmidt

Proceedings Volume 10136, 101361F (2017) https://doi.org/10.1117/12.2255077

KEYWORDS: Fractal analysis, Computed tomography, Image quality, Reconstruction algorithms, Bone, Image quality standards, Optical filters, Image filtering, Spatial frequencies, Visualization, Medicine

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Proceedings Article | 10 March 2017 Paper

Effects of window width and window level adjustment on detection tasks in computed tomography images

P. Khobragade, Jiahua Fan, Franco Rupcich, Dominic Crotty, Taly Gilat Schmidt

Proceedings Volume 10136, 101361G (2017) https://doi.org/10.1117/12.2255575

KEYWORDS: Computed tomography, Image display, Image quality, Visualization, Optical filters, Image filtering, Bone, Image quality standards, Visual process modeling, Visual system, Modulation transfer functions, Medicine

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Proceedings Article | 9 March 2017 Presentation + Paper

Spectral CT metal artifact reduction with an optimization-based reconstruction algorithm

Taly Gilat Schmidt, Rina Barber, Emil Sidky

Proceedings Volume 10132, 101321B (2017) https://doi.org/10.1117/12.2249079

KEYWORDS: Metals, Reconstruction algorithms, Computer simulations, Computed tomography, Data modeling, Photon counting, CT reconstruction, Data acquisition, Algorithm development, Bone, Image filtering, Optimization (mathematics)

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SPIE Journal Paper | 29 November 2016

Accuracy of patient-specific organ dose estimates obtained using an automated image segmentation algorithm

Taly Gilat Schmidt, Adam S. Wang, Thomas Coradi, Benjamin Haas, Josh Star-Lack

JMI, Vol. 3, Issue 04, 043502, (November 2016) https://doi.org/10.1117/12.10.1117/1.JMI.3.4.043502

KEYWORDS: Image segmentation, Error analysis, Computed tomography, Monte Carlo methods, Lung, Image processing algorithms and systems, X-ray computed tomography, Bone, Tissues, Neck

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Proceedings Article | 25 March 2016 Paper

Comparison of quantitative k-edge empirical estimators using an energy-resolved photon-counting detector

Kevin Zimmerman, Taly Gilat Schmidt

Proceedings Volume 9783, 97831S (2016) https://doi.org/10.1117/12.2217233

KEYWORDS: Neural networks, Photon counting, Error analysis, Calibration, Data modeling, Photodetectors, X-ray computed tomography, X-ray detectors, X-rays, Gadolinium, Aluminum, Polymethylmethacrylate, Chest

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Proceedings Article | 24 March 2016 Paper

Task-based detectability comparison of exponential transformation of free-response operating characteristic (EFROC) curve and channelized Hotelling observer (CHO)

P. Khobragade, Jiahua Fan, Franco Rupcich, Dominic Crotty, Taly Gilat Schmidt

Proceedings Volume 9787, 97870C (2016) https://doi.org/10.1117/12.2216505

KEYWORDS: Systems modeling, Reconstruction algorithms, Computed tomography, Image quality, Imaging systems, Detector development, Image analysis, Signal detection, Image visualization, Medicine, Optical filters

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Proceedings Article | 22 March 2016 Paper

Accuracy of patient specific organ-dose estimates obtained using an automated image segmentation algorithm

Taly Gilat-Schmidt, Adam Wang, Thomas Coradi, Benjamin Haas, Josh Star-Lack

Proceedings Volume 9783, 978311 (2016) https://doi.org/10.1117/12.2217374

KEYWORDS: Image segmentation, Computed tomography, Monte Carlo methods, Algorithm development, Image processing algorithms and systems, Software development, Radiation dosimetry, Lung, Ions, Brain

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SPIE Journal Paper | 23 October 2015

Quantifying cross-scatter contamination in biplane fluoroscopy motion analysis systems

Janelle Cross, Ben McHenry, Taly Schmidt

JMI, Vol. 2, Issue 04, 043503, (October 2015) https://doi.org/10.1117/12.10.1117/1.JMI.2.4.043503

KEYWORDS: Fluoroscopy, Monte Carlo methods, Motion analysis, Imaging systems, Contamination, Bone, Signal detection, 3D modeling, Sensors, Model-based design

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Proceedings Article | 18 March 2015 Paper

Evaluation of spectral CT data acquisition methods via non-stochastic variance maps

Adrian Sanchez, Emil Sidky, Taly Gilat Schmidt, Xiaochuan Pan

Proceedings Volume 9412, 941211 (2015) https://doi.org/10.1117/12.2081965

KEYWORDS: Data acquisition, Sensors, Reconstruction algorithms, Computed tomography, X-rays, Photon counting, X-ray computed tomography, Statistical analysis, Polymethylmethacrylate, Medical imaging

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Proceedings Article | 18 March 2015 Paper

Investigation of a one-step spectral CT reconstruction algorithm for direct inversion into basis material images

Taly Gilat Schmidt, Emil Sidky

Proceedings Volume 9412, 94124Y (2015) https://doi.org/10.1117/12.2082057

KEYWORDS: Reconstruction algorithms, Detection and tracking algorithms, Gadolinium, CT reconstruction, Bone, Sensors, Computer simulations, Image analysis, Photodetectors, Computed tomography

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Proceedings Article | 19 March 2014 Paper

Experimental study of two material decomposition methods using multi-bin photon counting detectors

Kevin Zimmerman, Emil Sidky, Taly Gilat Schmidt

Proceedings Volume 9033, 90333G (2014) https://doi.org/10.1117/12.2043679

KEYWORDS: Calibration, Polymethylmethacrylate, Aluminum, Sensors, Photodetectors, Photon counting, Signal attenuation, X-rays, Nickel, Error analysis

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Photon-counting detectors with multi-bin pulse height analysis (PHA) are capable of extracting energy dependent information which can be exploited for material decomposition. Iterative decomposition algorithms have been previously implemented which require prior knowledge of the source spectrum, detector spectral response, and energy threshold settings. We experimentally investigated two material decomposition methods that do not require explicit knowledge of the source spectrum and spectral response. In the first method, the effective spectrum for each energy bin is estimated from calibration transmission measurements, followed by an iterative maximum likelihood decomposition algorithm. The second investigated method, first proposed and tested through simulations by Alvarez, uses a linearized maximum likelihood estimator which requires calibration transmission measurements. The Alvarez method has the advantage of being non-iterative. This study experimentally quantified and compared the material decomposition bias, as a percentage of material thickness, and standard deviation resulting from these two material decomposition estimators. Multi-energy x-ray transmission measurements were acquired through varying thicknesses of Teon, Delrin, and neoprene at two different flux settings and decomposed into PMMA and aluminum thicknesses using the investigated methods. In addition, a series of 200 equally spaced projections of a rod phantom were acquired over 360°. The multi-energy sinograms were decomposed using both empirical methods and then reconstructed using filtered backprojection producing two images representing each basis material. The Alvarez method decomposed Delrin into PMMA with a bias of 0.5-19% and decomposed neoprene into aluminum with a bias of less than 3%. The spectral estimation method decomposed Delrin into PMMA with a bias of 0.6-16% and decomposed neoprene into aluminum with a bias of 0.1-58%. In general, the spectral estimation method resulted in larger bias than the Alvarez method. Both methods demonstrated similar standard deviations of less than 1 mm. Both decomposition methods resulted in similar bias and standard deviation when comparing performance at the two flux levels. The results suggest preliminary feasibility of two empirical methods that use calibration measurements rather than prior knowledge of system parameters to estimate thicknesses of the basis materials.

Proceedings Article | 19 March 2014 Paper

Effects of energy-bin acquisition methods on noise properties in photon-counting spectral CT

Taly Gilat Schmidt, Kevin Zimmerman, Emil Sidky

Proceedings Volume 9033, 90331B (2014) https://doi.org/10.1117/12.2043932

KEYWORDS: X-rays, Sensors, Polymethylmethacrylate, Aluminum, Computer simulations, Photons, Data acquisition, X-ray imaging, Photodetectors, Spectral models

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Proceedings Article | 6 March 2013 Paper

Quantifying cross scatter in biplane fluoroscopy motion analysis systems

Janelle Cross, Ben McHenry, Taly Gilat Schmidt

Proceedings Volume 8668, 86685X (2013) https://doi.org/10.1117/12.2007045

KEYWORDS: Fluoroscopy, Motion analysis, X-rays, X-ray imaging, In vivo imaging, Soft tissue optics, Tissue optics, Contamination, Optical spheres, Tissues

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Proceedings Article | 6 March 2013 Paper

Experimental study of optimal energy weighting in energy-resolved CT using a CZT detector

Franco Rupcich, Taly Gilat-Schmidt

Proceedings Volume 8668, 86681X (2013) https://doi.org/10.1117/12.2008439

KEYWORDS: Sensors, Photons, Computed tomography, Breast, Electronic test equipment, Photon counting, Photodetectors, X-ray computed tomography, Calcium, Signal attenuation

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Proceedings Article | 3 March 2012 Paper

An empirical method for correcting the detector spectral response in energy-resolved CT

Taly Gilat Schmidt

Proceedings Volume 8313, 831312 (2012) https://doi.org/10.1117/12.912136

KEYWORDS: Gadolinium, Sensors, Calibration, Photodetectors, Aluminum, Polymethylmethacrylate, Data modeling, Synchrotrons, X-rays, Blood

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Proceedings Article | 17 March 2011 Paper

Energy deposition in the breast during CT scanning: quantification and implications for dose reduction

Franco Rupcich, Iacovos Kyprianou, Andreu Badal, Taly Schmidt

Proceedings Volume 7961, 796128 (2011) https://doi.org/10.1117/12.878861

KEYWORDS: Breast, Monte Carlo methods, Photon transport, Computed tomography, Sensors, Bismuth, Cancer, X-rays, Tissues, Tissue optics

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Proceedings Article | 19 March 2010 Paper

Multi-pinhole dynamic SPECT imaging: simulation and system optimization

Dan Ma, Anne Clough, Taly Gilat Schmidt

Proceedings Volume 7622, 76220U (2010) https://doi.org/10.1117/12.844106

KEYWORDS: Collimators, Single photon emission computed tomography, Monte Carlo methods, Signal to noise ratio, Imaging systems, Spatial resolution, Sensors, Cameras, Computer simulations, Radon

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Proceedings Article | 13 March 2009 Paper

Preliminary feasibility of dedicated breast CT with an inverse geometry

Taly Gilat Schmidt

Proceedings Volume 7258, 72582Y (2009) https://doi.org/10.1117/12.811772

KEYWORDS: Breast, Sensors, X-ray computed tomography, Time correlated photon counting, Mammography, Photodetectors, X-rays, Photon counting, X-ray detectors, Tissues

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Proceedings Article | 20 April 2005 Paper

MTF analysis of a prototype table-top inverse-geometry volumetric CT system

Taly Schmidt, N. Robert Bennett, Samuel Mazin, Josh Star-Lack, Edward Solomon, Norbert Pelc

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.596083

KEYWORDS: Modulation transfer functions, Sensors, Prototyping, Reconstruction algorithms, Detector arrays, X-rays, Calibration, Point spread functions, 3D metrology, Data acquisition

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Proceedings Article | 20 April 2005 Paper

2D simulations of an inverse-geometry volumetric CT system with multiple detector arrays

Samuel Mazin, Josh Star-Lack, Taly Schmidt, Norbert Pelc

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.595947

KEYWORDS: Modulation transfer functions, Detector arrays, Sensors, Radon, Imaging systems, Reconstruction algorithms, Convolution, Computer simulations, Medical imaging, 3D vision

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Proceedings Article | 6 May 2004 Paper

Noise simulations for an inverse-geometry volumetric CT system

Taly Schmidt, Rebecca Fahrig, Norbert Pelc

Proceedings Volume 5368, (2004) https://doi.org/10.1117/12.535932

KEYWORDS: Sensors, Reconstruction algorithms, X-ray computed tomography, Scanners, Computer simulations, Monte Carlo methods, X-rays, Signal attenuation, Data acquisition, Detector arrays

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Proceedings Article | 6 May 2004 Paper

Geometry analysis of an inverse-geometry volumetric CT system with multiple detector arrays

Samuel Mazin, Taly Schmidt, Edward Solomon, Rebecca Fahrig, Norbert Pelc

Proceedings Volume 5368, (2004) https://doi.org/10.1117/12.536032

KEYWORDS: Detector arrays, Sensors, Radon, Imaging systems, Data acquisition, Computed tomography, Fluctuations and noise, Medical imaging, 3D vision, Radiology

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Proceedings Article | 5 June 2003 Paper

Three-dimensional reconstruction algorithm for a reverse geometry volumetric CT system with a large-array scanned source

Taly Gilat, Rebecca Fahrig, Norbert Pelc

Proceedings Volume 5030, (2003) https://doi.org/10.1117/12.480386

KEYWORDS: Reconstruction algorithms, Sensors, Radon, Data acquisition, Detection and tracking algorithms, Optical spheres, X-ray computed tomography, Image filtering, Fourier transforms, Computer simulations

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