Dr. Georgia D. Tourassi Profile

Dr. Georgia D. Tourassi

SPIE Involvement:

Author | Editor

Area of Expertise:

Computer-Aided Diagnosis , Medical Imaging , Machine Learning

Websites:

Company Website

Publications (58)

Proceedings Article | 13 March 2019 Paper

Computer-aided detection using non-convolutional neural network Gaussian processes

Devanshu Agrawal, Hong-Jun Yoon, Georgia Tourassi, Jacob Hinkle

Proceedings Volume 10950, 109503N (2019) https://doi.org/10.1117/12.2513625

KEYWORDS: Data modeling, Performance modeling, Neural networks, Solid modeling, Computer-aided diagnosis, Computer aided diagnosis and therapy, Binary data, Image classification, Computer aided design, Process modeling

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Proceedings Article | 6 July 2018 Paper

Deep radiogenomics for predicting clinical phenotypes in invasive breast cancer

Hong-Jun Yoon, Arvind Ramanathan, Folami Alamudun, Georgia Tourassi

Proceedings Volume 10718, 107181H (2018) https://doi.org/10.1117/12.2318508

KEYWORDS: Breast cancer, Genomics, Receptors, Magnetic resonance imaging, Cancer, Tumors, Data archive systems, Breast, Oncology, Convolutional neural networks

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SPIE Journal Paper | 19 March 2018 Open Access

Modeling sequential context effects in diagnostic interpretation of screening mammograms

Folami Alamudun, Paige Paulus, Hong-Jun Yoon, Georgia Tourassi

JMI, Vol. 5, Issue 03, 031408, (March 2018) https://doi.org/10.1117/12.10.1117/1.JMI.5.3.031408

KEYWORDS: Diagnostics, Visualization, Mammography, Breast, Radiology, Data modeling, Statistical analysis, Visual analytics, Medical imaging, Fractal analysis

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Prior research has shown that physicians’ medical decisions can be influenced by sequential context, particularly in cases where successive stimuli exhibit similar characteristics when analyzing medical images. This type of systematic error is known to psychophysicists as sequential context effect as it indicates that judgments are influenced by features of and decisions about the preceding case in the sequence of examined cases, rather than being based solely on the peculiarities unique to the present case. We determine if radiologists experience some form of context bias, using screening mammography as the use case. To this end, we explore correlations between previous perceptual behavior and diagnostic decisions and current decisions. We hypothesize that a radiologist’s visual search pattern and diagnostic decisions in previous cases are predictive of the radiologist’s current diagnostic decisions. To test our hypothesis, we tasked 10 radiologists of varied experience to conduct blind reviews of 100 four-view screening mammograms. Eye-tracking data and diagnostic decisions were collected from each radiologist under conditions mimicking clinical practice. Perceptual behavior was quantified using the fractal dimension of gaze scanpath, which was computed using the Minkowski–Bouligand box-counting method. To test the effect of previous behavior and decisions, we conducted a multifactor fixed-effects ANOVA. Further, to examine the predictive value of previous perceptual behavior and decisions, we trained and evaluated a predictive model for radiologists’ current diagnostic decisions. ANOVA tests showed that previous visual behavior, characterized by fractal analysis, previous diagnostic decisions, and image characteristics of previous cases are significant predictors of current diagnostic decisions. Additionally, predictive modeling of diagnostic decisions showed an overall improvement in prediction error when the model is trained on additional information about previous perceptual behavior and diagnostic decisions.

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Proceedings Article | 24 March 2016 Paper

Shapelet analysis of pupil dilation for modeling visuo-cognitive behavior in screening mammography

Folami Alamudun, Hong-Jun Yoon, Tracy Hammond, Kathy Hudson, Garnetta Morin-Ducote, Georgia Tourassi

Proceedings Volume 9787, 97870M (2016) https://doi.org/10.1117/12.2217670

KEYWORDS: Mammography, Diagnostics, Eye models, Pathology, Breast, Visual process modeling, Visual analytics, Visualization, Eye, Optical tracking, Radiology, Data modeling, Cancer, Breast cancer, Nervous system

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SPIE Journal Paper | 25 June 2015 Open Access

Special Section Guest Editorial: LUNGx Challenge for computerized lung nodule classification: reflections and lessons learned

Samuel Armato, Lubomir Hadjiiski, Georgia Tourassi, Karen Drukker, Maryellen Giger, Feng Li, George Redmond, Keyvan Farahani, Justin S. Kirby, Laurence Clarke

JMI, Vol. 2, Issue 02, 020103, (June 2015) https://doi.org/10.1117/12.10.1117/1.JMI.2.2.020103

KEYWORDS: Medical imaging, Lung, Cancer, Calibration, Computed tomography, Oncology, Lung cancer, Databases, Algorithm development, Radiology

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Proceedings Article | 17 March 2015 Paper

Fractal analysis of radiologists' visual scanning pattern in screening mammography

Folami Alamudun, Hong-Jun Yoon, Kathy Hudson, Garnetta Morin-Ducote, Georgia Tourassi

Proceedings Volume 9416, 94160T (2015) https://doi.org/10.1117/12.2082972

KEYWORDS: Visualization, Pathology, Fractal analysis, Mammography, Diagnostics, Visual analytics, Breast, Radiology, Image processing, Visual process modeling

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Proceedings Article | 17 March 2015 Paper

Temporal stability of visual search-driven biometrics

Hong-Jun Yoon, Tandy Carmichael, Georgia Tourassi

Proceedings Volume 9416, 94160U (2015) https://doi.org/10.1117/12.2082801

KEYWORDS: Visualization, Biometrics, Calibration, Glasses, Phase modulation, Eye, Data modeling, Visual process modeling, Cognitive modeling, Eye models

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Proceedings Article | 11 March 2014 Paper

Gaze as a biometric

Hong-Jun Yoon, Tandy Carmichael, Georgia Tourassi

Proceedings Volume 9037, 903707 (2014) https://doi.org/10.1117/12.2044303

KEYWORDS: Biometrics, Eye, Data modeling, Eye models, Visualization, Calibration, Data conversion, Radiology, Glasses, Profiling

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Proceedings Article | 28 March 2013 Paper

Investigating the association of eye gaze pattern and diagnostic error in mammography

Sophie Voisin, Frank Pinto, Songhua Xu, Garnetta Morin-Ducote, Kathy Hudson, Georgia Tourassi

Proceedings Volume 8673, 867302 (2013) https://doi.org/10.1117/12.2007908

KEYWORDS: Diagnostics, Eye, Mammography, Visualization, Radiology, Error analysis, Medical imaging, Calibration, Breast, Imaging systems

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Proceedings Article | 28 March 2013 Paper

A novel graphical user interface for high-efficacy modeling of human perceptual similarity opinions

James Kress, Songhua Xu, Georgia Tourassi

Proceedings Volume 8673, 867306 (2013) https://doi.org/10.1117/12.2007992

KEYWORDS: Data modeling, Visualization, Human-machine interfaces, Machine learning, Statistical analysis, Medical imaging, Image analysis, Radiology, Image retrieval, Feature extraction

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Proceedings Article | 18 March 2013 Paper

Automated assessment of bilateral breast volume asymmetry as a breast cancer biomarker during mammographic screening

Alex Williams, Austin Hitt, Sophie Voisin, Georgia Tourassi

Proceedings Volume 8670, 86701A (2013) https://doi.org/10.1117/12.2008019

KEYWORDS: Breast, Breast cancer, Cancer, Mammography, Image segmentation, Computer aided diagnosis and therapy, Databases, Genetics, Computing systems, Diagnostics

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Proceedings Article | 29 February 2012 Paper

Predictive modeling of human perception subjectivity: feasibility study of mammographic lesion similarity

Songhua Xu, Kathleen Hudson, Yong Bradley, Brian Daley, Katherine Frederick-Dyer, Georgia Tourassi

Proceedings Volume 8318, 83180M (2012) https://doi.org/10.1117/12.913639

KEYWORDS: Visualization, Machine learning, Visual process modeling, Image retrieval, Content based image retrieval, Mammography, Radiology, Surgery, Medical imaging, Feature extraction

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Proceedings Article | 23 February 2012 Paper

A novel local learning based approach with application to breast cancer diagnosis

Songhua Xu, Georgia Tourassi

Proceedings Volume 8315, 83151Y (2012) https://doi.org/10.1117/12.912194

KEYWORDS: Breast cancer, Machine learning, Breast, Data modeling, Performance modeling, Stochastic processes, Databases, Fourier transforms, Biopsy, Medical imaging

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Proceedings Article | 3 March 2011 Paper

Modeling error in assessment of mammographic image features for improved computer-aided mammography training: initial experience

Maciej Mazurowski, Georgia Tourassi

Proceedings Volume 7966, 796607 (2011) https://doi.org/10.1117/12.878737

KEYWORDS: Mammography, Solid modeling, Radiology, Systems modeling, Computing systems, Error analysis, Medical imaging, Breast imaging, Diagnostics, Breast

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Proceedings Article | 9 March 2010 Paper

Perception-driven IT-CADe analysis for the detection of masses in screening mammography: initial investigation

Georgia Tourassi, Maciej Mazurowski, Elizabeth Krupinski

Proceedings Volume 7624, 762406 (2010) https://doi.org/10.1117/12.845495

KEYWORDS: Computer aided diagnosis and therapy, Mammography, Visualization, Cancer, Diagnostics, Radiology, Target recognition, Imaging systems, Computer aided design, Digital imaging

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Proceedings Article | 27 February 2010 Paper

User modeling for improved computer-aided training in radiology: initial experience

Maciej Mazurowski, Joseph Lo, Georgia Tourassi

Proceedings Volume 7627, 762713 (2010) https://doi.org/10.1117/12.843863

KEYWORDS: Radiology, Solid modeling, Mammography, Error analysis, Diagnostics, Computer simulations, Breast, Mathematical modeling, Breast cancer, Data modeling

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Proceedings Article | 14 March 2009 Paper

Detection of iron overload through neutron stimulated emission computed tomography: a sensitivity analysis study

Anuj Kapadia, Greeshma Agasthya, Georgia Tourassi

Proceedings Volume 7258, 725811 (2009) https://doi.org/10.1117/12.811737

KEYWORDS: Iron, Liver, Sensors, Monte Carlo methods, Tissues, Gamma radiation, Germanium, Calibration, Computed tomography, Signal attenuation

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Proceedings Article | 3 March 2009 Paper

Information-theoretic CAD system in mammography: improved mass detection by incorporating a Gaussian saliency map

Georgia Tourassi, Brian Harrawood

Proceedings Volume 7260, 726017 (2009) https://doi.org/10.1117/12.812966

KEYWORDS: Mammography, Databases, Computer aided diagnosis and therapy, Diagnostics, Electronic filtering, CAD systems, Digital mammography, Image segmentation, Information technology, Imaging systems

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Proceedings Article | 28 February 2009 Paper

A comparative study of database reduction methods for case-based computer-aided detection systems: preliminary results

Maciej Mazurowski, Jordan Malof, Jacek Zurada, Georgia Tourassi

Proceedings Volume 7260, 72600F (2009) https://doi.org/10.1117/12.812442

KEYWORDS: Databases, Computing systems, Machine learning, Computer aided diagnosis and therapy, Mammography, Tissues, Imaging systems, Library classification systems, Classification systems

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Proceedings Article | 28 February 2009 Paper

Relational representation for improved decisions with an information-theoretic CADe system: initial experience

Maciej Mazurowski, Georgia Tourassi

Proceedings Volume 7260, 726018 (2009) https://doi.org/10.1117/12.812965

KEYWORDS: Computer aided diagnosis and therapy, Computing systems, Databases, Imaging systems, Mammography, Machine learning, Image segmentation, Algorithm development, Data modeling

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Proceedings Article | 19 March 2008 Paper

GEANT4 simulation of NSECT for detection of iron overload in the liver

Anuj Kapadia, Brian Harrawood, Georgia Tourassi

Proceedings Volume 6913, 691309 (2008) https://doi.org/10.1117/12.773245

KEYWORDS: Liver, Iron, Tomography, Tissues, Sensors, Monte Carlo methods, Gamma radiation, Statistical analysis, Reconstruction algorithms, Computed tomography

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Proceedings Article | 18 March 2008 Paper

Validation of a GEANT4 simulation of neutron stimulated emission computed tomography

Anuj Kapadia, Brian Harrawood, Georgia Tourassi

Proceedings Volume 6913, 69133H (2008) https://doi.org/10.1117/12.773196

KEYWORDS: Iron, Sensors, Monte Carlo methods, Computer simulations, Germanium, Gamma radiation, Computed tomography, Liver, Tissues, Tomography

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Proceedings Article | 17 March 2008 Paper

Database decomposition of a knowledge-based CAD system in mammography: an ensemble approach to improve detection

Maciej Mazurowski, Jacek Zurada, Georgia Tourassi

Proceedings Volume 6915, 69151K (2008) https://doi.org/10.1117/12.771556

KEYWORDS: Databases, Mammography, CAD systems, Computing systems, Machine learning, Feature extraction, Computer aided design, Computer aided diagnosis and therapy, Imaging systems, Digital mammography

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Proceedings Article | 17 March 2008 Paper

Computer-aided detection of breast masses in tomosynthesis reconstructed volumes using information-theoretic similarity measures

Swatee Singh, Georgia Tourassi, Amarpreet Chawla, Robert Saunders, Ehsan Samei, Joseph Lo

Proceedings Volume 6915, 691505 (2008) https://doi.org/10.1117/12.772978

KEYWORDS: Computer aided diagnosis and therapy, Breast, Reconstruction algorithms, Databases, Computer aided design, Computing systems, Image filtering, Breast cancer, Human subjects, Gaussian filters

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Proceedings Article | 17 March 2008 Paper

Effect of ROI size on the performance of an information-theoretic CAD system in mammography: multi-size fusion analysis

Robert Ike, Swatee Singh, Brian Harrawood, Georgia Tourassi

Proceedings Volume 6915, 691527 (2008) https://doi.org/10.1117/12.772678

KEYWORDS: CAD systems, Mammography, Computer aided design, Databases, Computer aided diagnosis and therapy, Statistical analysis, Digital mammography, Breast, Image fusion, Solid modeling

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Proceedings Article | 6 March 2008 Paper

Toward perceptually driven image retrieval in mammography: a pilot observer study to assess visual similarity of masses

Maciej Mazurowski, Brian Harrawood, Jacek Zurada, Georgia Tourassi

Proceedings Volume 6917, 69170I (2008) https://doi.org/10.1117/12.772125

KEYWORDS: Visualization, Image retrieval, Mammography, Feature extraction, Computer aided diagnosis and therapy, Medical imaging, Human-machine interfaces, Analytical research, Diagnostics, Content based image retrieval

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Proceedings Article | 30 March 2007 Paper

Cross-digitizer robustness of a knowledge-based CAD system for mass detection in mammograms

Georgia Tourassi, Brian Harrawood, Carey Floyd

Proceedings Volume 6514, 65141Y (2007) https://doi.org/10.1117/12.711481

KEYWORDS: Databases, CAD systems, Mammography, Computer aided design, Digital mammography, Scanners, Computer aided diagnosis and therapy, Medical imaging, Computing systems, Imaging systems

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Proceedings Article | 30 March 2007 Paper

Breast mass detection in tomosynthesis projection images using information-theoretic similarity measures

Swatee Singh, Georgia Tourassi, Joseph Lo

Proceedings Volume 6514, 651415 (2007) https://doi.org/10.1117/12.713004

KEYWORDS: Computer aided diagnosis and therapy, Image filtering, Breast, Mammography, Databases, Algorithm development, Reconstruction algorithms, Breast cancer, Computer aided design, Human subjects

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Proceedings Article | 29 March 2007 Paper

Particle swarm optimization of neural network CAD systems with clinically relevant objectives

Piotr Habas, Jacek Zurada, Adel Elmaghraby, Georgia Tourassi

Proceedings Volume 6514, 65140M (2007) https://doi.org/10.1117/12.713829

KEYWORDS: Particle swarm optimization, Neural networks, Particles, CAD systems, Evolutionary algorithms, Algorithm development, Cancer, Electronic filtering, Neurons, Solid modeling

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Proceedings Article | 29 March 2007 Paper

Incorporation of a multiscale texture-based approach to mutual information matching for improved knowledge-based detection of masses in screening mammograms

Georgia Tourassi, Anna Bilska-Wolak, Piotr Habas, Carey Floyd

Proceedings Volume 6514, 651403 (2007) https://doi.org/10.1117/12.711474

KEYWORDS: Computer aided diagnosis and therapy, Mammography, Databases, Image processing, Image filtering, Medical imaging, Computing systems, Image enhancement, Statistical analysis, Prototyping

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Proceedings Article | 29 March 2007 Paper

Contribution of Haar wavelets and MPEG-7 textural features for false positive reduction in a CAD system for the detection of masses in mammograms

Nevine Eltonsy, Georgia Tourassi, Adel Elmaghraby

Proceedings Volume 6514, 651404 (2007) https://doi.org/10.1117/12.713524

KEYWORDS: Wavelets, CAD systems, Mammography, Feature extraction, Databases, Computer aided diagnosis and therapy, Breast, Cancer, Neural networks, Artificial neural networks

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Proceedings Article | 28 March 2007 Paper

On the development of a Gaussian noise model for scatter compensation

Jessie Xia, Georgia Tourassi, Joseph Lo, Carey Floyd

Proceedings Volume 6510, 65102M (2007) https://doi.org/10.1117/12.712515

KEYWORDS: Expectation maximization algorithms, Image processing, Radiography, Photons, Breast, Sensors, Digital mammography, Algorithm development, X-ray computed tomography, Scattering

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Proceedings Article | 16 March 2007 Paper

Elemental spectrum of a mouse obtained via neutron stimulation

Amy Sharma, Georgia Tourassi, Anuj Kapadia, Alexander Crowell, Matthew Kiser, Anthony Hutcheson, Brian Harrawood, Calvin Howell, Carey Floyd

Proceedings Volume 6510, 65100K (2007) https://doi.org/10.1117/12.713731

KEYWORDS: Chemical elements, Imaging spectroscopy, In vivo imaging, Germanium, Sensors, Gamma radiation, Tomography, Calcium, Gadolinium, Spectroscopy

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Proceedings Article | 16 March 2006 Paper

Confidence-based stratification of CAD recommendations with application to breast cancer detection

Piotr Habas, Jacek Zurada, Adel Elmaghraby, Georgia Tourassi

Proceedings Volume 6144, 61445G (2006) https://doi.org/10.1117/12.653961

KEYWORDS: Computer aided diagnosis and therapy, Computer aided design, Solid modeling, Neural networks, CAD systems, Data modeling, Breast cancer, Visualization, Error analysis, Cancer

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Proceedings Article | 2 March 2006 Paper

Rotating slat collimator design for high-energy near-field imaging

Amy Sharma, Carey Floyd, Brian Harrawood, Georgia Tourassi, Anuj Kapadia, Janelle Bender, Joseph Lo, Calvin Howell

Proceedings Volume 6142, 614217 (2006) https://doi.org/10.1117/12.653929

KEYWORDS: Collimators, Sensors, Spectroscopy, Reconstruction algorithms, Near field, Imaging spectroscopy, Gamma radiation, Modulation, MATLAB, Solar energy

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Certain elements (such as Fe, Cu, Zn, etc.) are vital to the body and an imbalance of such elements can either be a symptom or cause of certain pathologies. Neutron Stimulated Emission Computed Tomography (NSECT) is a spectroscopic imaging technique whereby the body is illuminated via a beam of neutrons causing elemental nuclei to become excited and emit characteristic gamma radiation. Acquiring the gamma energy spectra in a tomographic geometry allows reconstruction of elemental concentration images. Previously we have demonstrated the feasibility of NSECT using first generation CT approaches; while successful, the approach does not scale well and has limited resolution. Additionally, current gamma cameras operate in an energy range too low for NSECT imaging. However, the orbiting Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) captures and images gamma rays over the high-energy range equivalent to NSECT's (3 keV to 17 MeV) by utilizing Collimator-based Fourier transform imaging. A High Purity Germanium (HPGe) detector counts the number of energy events per unit of time, providing spectroscopic data. While a pair of rotating collimators placed in front of the detector modulates the number of gamma events, providing spatial information. Knowledge of the number of energy events at each discrete collimator angle allows for 2D image reconstruction. This method has proven successful at a focus of infinity in the RHESSI application. Our goal is to achieve similar results at a reasonable near-field focus. Here we describe the results of our simulations to implement a rotating modulation collimator (RMC) gamma imager for use in NSECT using simulations in Matlab. To determine feasible collimator setups and the stability of the inverse problem a Matlab environment was created that uses the geometry of the system to generate 1D observation data from 2D images and then to reconstruct 2D images using the MLEM algorithm. Reasonable collimator geometries were determined, successful reconstruction was achieved and the inverse problem was found to be stable.

Proceedings Article | 2 March 2006 Paper

Breast cancer diagnosis using neutron stimulated emission computed tomography: dose and count requirements

Carey Floyd Jr., Janelle Bender, Brian Harrawood, Amy Sharma, Anuj Kapadia, Georgia Tourassi, Joseph Lo, Calvin Howell

Proceedings Volume 6142, 61421O (2006) https://doi.org/10.1117/12.656045

KEYWORDS: Breast, Tissues, Bromine, Zinc, Breast cancer, Cesium, Rubidium, Mammography, Cobalt, Tumor growth modeling

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Proceedings Article | 29 April 2005 Paper

Detection of architectural distortion in mammograms using fractal analysis

Georgia Tourassi, Nevine Eltonsy, Adel Elmaghraby, Carey Floyd

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.593823

KEYWORDS: Fractal analysis, Breast, Mammography, Architectural distortion, Computer aided diagnosis and therapy, Digital mammography, Databases, Breast cancer, Statistical analysis, Computer aided design

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Proceedings Article | 29 April 2005 Paper

A novel technique for assessing the case-specific reliability of decisions made by CAD tools

Piotr Habas, Georgia Tourassi, Nevine Eltonsy, Adel Elmaghraby, Jacek Zurada

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.595597

KEYWORDS: Reliability, Computer aided design, Neural networks, Computer aided diagnosis and therapy, Solid modeling, Neurons, Performance modeling, Computer engineering, Databases, Detector development

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Proceedings Article | 29 April 2005 Paper

Automated detection of mammographic masses: preliminary assessment of an information-theoretic CAD scheme for reduction of false positives

Georgia Tourassi, Nevine Eltonsy, Adel Elmaghraby, Carey Floyd

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.595696

KEYWORDS: Computer aided diagnosis and therapy, Mammography, Computer aided design, Breast, Databases, Detection and tracking algorithms, CAD systems, Digital mammography, Algorithm development, Cancer

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Proceedings Article | 29 April 2005 Paper

DNA: directional neighborhood analysis for detection of breast masses in screening mammograms

Nevine Eltonsy, Georgia Tourassi, Piotr Habas, Adel Elmaghraby

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.593962

KEYWORDS: Mammography, Breast, Databases, Computer aided diagnosis and therapy, Feature extraction, CAD systems, Cancer, Visualization, Tissues, Breast cancer

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Proceedings Article | 15 April 2005 Paper

Knowledge-based detection of mammographic masses: analysis of the impact of database comprehensiveness

Georgia Tourassi, Carey Floyd

Proceedings Volume 5748, (2005) https://doi.org/10.1117/12.595574

KEYWORDS: Databases, Mammography, Breast, CAD systems, Digital mammography, Computer aided diagnosis and therapy, Breast cancer, Computer aided design, Digital imaging, Diagnostics

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Proceedings Article | 12 April 2005 Paper

Adapted morphing model for 3D volume reconstruction applied to abdominal CT images

Aleksey Fadeev, Nevine Eltonsy, Georgia Tourassi, Robert Martin, Adel Elmaghraby

Proceedings Volume 5744, (2005) https://doi.org/10.1117/12.595434

KEYWORDS: Computed tomography, 3D modeling, Data modeling, Reconstruction algorithms, Visual process modeling, Visualization, Volume rendering, Software development, 3D image processing, 3D image reconstruction

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Proceedings Article | 12 May 2004 Paper

Unsupervised tissue segmentation in screening mammograms for automated breast density assessment

H. Erin Rickard, Georgia Tourassi, Adel Elmaghraby

Proceedings Volume 5370, (2004) https://doi.org/10.1117/12.535762

KEYWORDS: Breast, Image segmentation, Mammography, Tissues, Binary data, Feature extraction, Radiology, Neural networks, Breast cancer, Image processing

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Proceedings Article | 12 May 2004 Paper

Computer-assisted diagnosis of mammographic masses using an information-theoretic image retrieval scheme with BIRADs-based relevance feedback

Georgia Tourassi, Carey Floyd

Proceedings Volume 5370, (2004) https://doi.org/10.1117/12.534090

KEYWORDS: Image retrieval, Mammography, Feature extraction, Databases, Computer aided diagnosis and therapy, Image segmentation, CAD systems, Diagnostics, Image processing, Pathology

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Proceedings Article | 12 May 2004 Paper

Performance evaluation of an information-theoretic CAD scheme for the detection of mammographic architectural distortion

Georgia Tourassi, Carey Floyd

Proceedings Volume 5370, (2004) https://doi.org/10.1117/12.534080

KEYWORDS: Computer aided diagnosis and therapy, Mammography, Architectural distortion, Breast, CAD systems, Breast cancer, Pathology, Image retrieval, Digital mammography, Databases

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Proceedings Article | 6 May 2004 Paper

Neutron stimulated emission computed tomography of stable isotopes

Carey Floyd, Calvin Howell, Brian Harrawood, Alexander Crowell, Anuj Kapadia, Robert Macri, Jessie Xia, Ronald Pedroni, James Bowsher, Mathew Kiser, Georgia Tourassi, Werner Tornow, Richard Walter

Proceedings Volume 5368, (2004) https://doi.org/10.1117/12.535350

KEYWORDS: Sensors, Tomography, Iron, Photons, Copper, Computed tomography, Spatial resolution, Signal detection, Collimators, Imaging spectroscopy

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Proceedings Article | 22 May 2003 Paper

Fast search and localization algorithm based on human visual perception modeling: an application for fast localization of structures in mammograms

Rene Vargas-Voracek, Georgia Tourassi, Ehsan Samei, Carey Floyd

Proceedings Volume 5034, (2003) https://doi.org/10.1117/12.480105

KEYWORDS: Image resolution, Breast, Mammography, Tissues, Error analysis, Spatial resolution, Statistical analysis, Image processing, Visualization, Visual process modeling

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Proceedings Article | 15 May 2003 Paper

Content-based image retrieval as a computer aid for the detection of mammographic masses

Georgia Tourassi, Rene Vargas-Voracek, Carey Floyd

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.481105

KEYWORDS: Image retrieval, Mammography, Databases, Image segmentation, Content based image retrieval, Computer aided diagnosis and therapy, Feature extraction, Digital imaging, Pathology, Digital mammography

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Proceedings Article | 15 May 2003 Paper

Mark Wachowiak, Renata Smolikova, Georgia Tourassi, Adel Elmaghraby

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.480867

KEYWORDS: Image registration, Biomedical optics, Image information entropy, Magnetic resonance imaging, Brain, Computed tomography, Head, Ultrasonography, Optimization (mathematics), Image processing

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Proceedings Article | 15 May 2003 Paper

Validation of a constraint satisfaction neural network for breast cancer diagnosis: new results from 1,030 cases

Georgia Tourassi, Joseph Lo, Mia Markey

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.481111

KEYWORDS: Breast, Neurons, Diagnostics, Breast cancer, Biopsy, Neural networks, Databases, Computer aided diagnosis and therapy, Mammography, Dynamical systems

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Proceedings Article | 9 May 2002 Paper

Cluster analysis of BI-RADS descriptions of biopsy-proven breast lesions

Mia Markey, Joseph Lo, Georgia Tourassi, Carey Floyd

Proceedings Volume 4684, (2002) https://doi.org/10.1117/12.467177

KEYWORDS: Databases, Computer aided diagnosis and therapy, Breast, Breast cancer, Biological research, Solid modeling, Data modeling, Architectural distortion, Biopsy, Radiology

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Proceedings Article | 11 April 2002 Paper

General ultrasound speckle models in determining scatterer density

Mark Wachowiak, Renata Smolikova, Georgia Tourassi, Adel Elmaghraby

Proceedings Volume 4687, (2002) https://doi.org/10.1117/12.462164

KEYWORDS: Data modeling, Ultrasonography, Speckle, Scattering, Statistical analysis, Signal to noise ratio, Statistical modeling, Tissues, Computer simulations, Transducers

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Proceedings Article | 6 June 2000 Paper

Use of a constraint satisfaction neural network for breast cancer diagnosis and dynamic scenarios simulation

Georgia Tourassi, Carey Floyd, Joseph Lo

Proceedings Volume 3979, (2000) https://doi.org/10.1117/12.387680

KEYWORDS: Breast cancer, Prototyping, Neural networks, Databases, Biopsy, Diagnostics, Architectural distortion, Breast, Cancer, Content addressable memory

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Proceedings Article | 21 May 1999 Paper

Case-based reasoning as a computer aid to diagnosis

Carey Floyd, Joseph Lo, Georgia Tourassi

Proceedings Volume 3661, (1999) https://doi.org/10.1117/12.348603

KEYWORDS: Biopsy, Databases, Breast, Mammography, Decision support systems, Receivers, Computing systems, Diagnostics, Cancer, Radiology

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Proceedings Article | 21 May 1999 Paper

Java interface to a computer-aided diagnosis system for acute pulmonary embolism using PIOPED findings

Erik Frederick, Georgia Tourassi, Matthew Gauger, Carey Floyd

Proceedings Volume 3661, (1999) https://doi.org/10.1117/12.348552

KEYWORDS: CAD systems, Computer aided diagnosis and therapy, Human-machine interfaces, Lung, Java, Computing systems, Artificial neural networks, Computer aided design, Chest imaging, Databases

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Proceedings Article | 16 April 1996 Paper

Use of genetic algorithms for computer-aided diagnosis of breast cancers from image features

Carey Floyd, Georgia Tourassi, Jay Baker

Proceedings Volume 2710, (1996) https://doi.org/10.1117/12.237973

KEYWORDS: Breast cancer, Biopsy, Genetic algorithms, Genetics, Computer aided diagnosis and therapy, Mammography, Breast, Artificial neural networks, Neural networks, Receivers

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Proceedings Article | 12 May 1995 Paper

Computer-aided prediction of breast implant rupture based on mammographic findings

Carey Floyd, Mary Soo, Georgia Tourassi, Phyllis Kornguth

Proceedings Volume 2434, (1995) https://doi.org/10.1117/12.208718

KEYWORDS: Breast, Diagnostics, Computing systems, Surgery, Artificial neural networks, Mammography, Network security, Silicon, Detection and tracking algorithms, Radiology

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Proceedings Article | 11 May 1994 Paper

Three-dimensional lesion detection in SPECT using artificial neural networks

Georgia Tourassi, Carey Floyd

Proceedings Volume 2167, (1994) https://doi.org/10.1117/12.175094

KEYWORDS: Single photon emission computed tomography, 3D image processing, Diagnostics, Neural networks, Artificial neural networks, Monte Carlo methods, Image processing, Electronic filtering, Photons, Network architectures

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