Dr. Walter F. Good Profile

Dr. Walter F. Good

Professor at Univ of Pittsburgh

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Author

Publications (36)

Proceedings Article | 21 March 2008 Paper

Utilization of mammographic complexity for improving risk assessment and cancer detection

Xiao Hui Wang, Jill King, Saraswathi Golla, Janet Durick, Cynthia Britton, Jules Sumkin, Joseph Leader, Walter Good

Proceedings Volume 6916, 69161M (2008) https://doi.org/10.1117/12.770587

KEYWORDS: Cancer, Breast, Tissues, Breast cancer, Databases, Mammography, Tumors, Statistical analysis, Physics, Image compression

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Proceedings Article | 6 March 2008 Paper

Assembling a prototype resonance electrical impedance spectroscopy system for breast tissue signal detection: preliminary assessment

Jules Sumkin, Bin Zheng, Michelle Gruss, John Drescher, Joseph Leader, Walter Good, Amy Lu, Cathy Cohen, Ratan Shah, Margarita Zuley, David Gur

Proceedings Volume 6917, 691716 (2008) https://doi.org/10.1117/12.770457

KEYWORDS: Breast, Biopsy, Tissues, Breast cancer, Prototyping, Dielectric spectroscopy, Mammography, Signal detection, Data acquisition, Tissue optics

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Using electrical impedance spectroscopy (EIS) technology to detect breast abnormalities in general and cancer in particular has been attracting research interests for decades. Large clinical tests suggest that current EIS systems can achieve high specificity (≥ 90%) at a relatively low sensitivity ranging from 15% to 35%. In this study, we explore a new resonance frequency based electrical impedance spectroscopy (REIS) technology to measure breast tissue EIS signals in vivo, which aims to be more sensitive to small tissue changes. Through collaboration between our imaging research group and a commercial company, a unique prototype REIS system has been assembled and preliminary signal acquisition has commenced. This REIS system has two detection probes mounted in the two ends of a Y-shape support device with probe separation of 60 mm. During REIS measurement, one probe touches the nipple and the other touches to an outer point of the breast. The electronic system continuously generates sweeps of multi-frequency electrical pulses ranging from 100 to 4100 kHz. The maximum electric voltage and the current applied to the probes are 1.5V and 30mA, respectively. Once a "record" command is entered, multi-frequency sweeps are recorded every 12 seconds until the program receives a "stop recording" command. In our imaging center, we have collected REIS measurements from 150 women under an IRB approved protocol. The database includes 58 biopsy cases, 78 screening negative cases, and other "recalled" cases (for additional imaging procedures). We measured eight signal features from the effective REIS sweep of each breast. We applied a multi-feature based artificial neural network (ANN) to classify between "biopsy" and normal "non-biopsy" breasts. The ANN performance is evaluated using a leave-one-out validation method and ROC analysis. We conducted two experiments. The first experiment attempted to classify 58 "biopsy" breasts and 58 "non-biopsy" breasts acquired on 58 women each having one breast recommended for biopsy. The second experiment attempted to classify 58 "biopsy" breasts and 58 negative breasts from the set of screening negative cases. The areas under ROC curves are 0.679 ± 0.033 and 0.606 ± 0.035 for the first and the second experiment, respectively. The preliminary results demonstrate (1) even with this rudimentary system with only one paired probes there is a measurable signal of changes in breast tissue demonstrating the feasibility of applying REIS technology for identifying at least some women with highly suspicious breast abnormalities and (2) the electromagnetic asymmetry between two breasts may be more sensitive in detecting changes in the abnormal breast. To further improve the REIS system performance, we are currently designing a new REIS system with multiple electrical probes and a more sophisticated analysis scheme.

Proceedings Article | 22 March 2007 Paper

Stereo display of CT images for lung cancer screening: a pilot study

Xiao Hui Wang, Janet Durick, David Herbert, Amy Lu, Sarawathi Golla, Dilip Shinde, Samaia Piracha, Kristin Foley, Carl Fuhrman, Betty Shindel, J. Ken Leader, Walter Good

Proceedings Volume 6516, 65160C (2007) https://doi.org/10.1117/12.709520

KEYWORDS: Lung, Computed tomography, 3D displays, Lung cancer, Stereoscopic displays, Tissues, 3D image processing, Medical imaging, CRTs, Statistical analysis

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Proceedings Article | 7 March 2007 Paper

Application of 3D geometric tensors for segmenting cylindrical tree structures from volumetric datasets

Walter Good, Xiao Hui Wang, Carl Fuhrman, Jules Sumkin, Glenn Maitz, Joseph Leader, Cynthia Britton, David Gur

Proceedings Volume 6512, 65123R (2007) https://doi.org/10.1117/12.709823

KEYWORDS: Image segmentation, 3D applications, Matrices, Gold, Diagnostics, Detection and tracking algorithms, Image filtering, Statistical analysis, Chronic obstructive pulmonary disease, Radiology

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Proceedings Article | 30 January 2006 Paper

Real-time stereographic display of volumetric datasets in radiology

Xiao Hui Wang, Glenn Maitz, J. Leader, Walter Good

Proceedings Volume 6055, 60551A (2006) https://doi.org/10.1117/12.640834

KEYWORDS: 3D volumetric displays, Radiology, Glasses, Lung, Magnetic resonance imaging, Human-machine interfaces, Visualization, Lung cancer, 3D displays, Stereoscopic displays

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Proceedings Article | 21 May 2004 Paper

Stereo display for chest CT

Xiao Wang, Walter Good, Carl Fuhrman, Jules Sumkin, Cynthia Britton, Thomas Warfel, David Gur

Proceedings Volume 5291, (2004) https://doi.org/10.1117/12.527234

KEYWORDS: Computed tomography, Chest, Stereoscopic displays, Lung, Tissues, Transparency, 3D displays, 3D image processing, 3D modeling, Image segmentation

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Proceedings Article | 5 May 2004 Paper

Projection models for stereo display of chest CT

Xiao Hui Wang, Walter Good, Carl Fuhrman, Jules Sumkin, Cynthia Britton, Thomas Warfel, David Gur

Proceedings Volume 5367, (2004) https://doi.org/10.1117/12.536111

KEYWORDS: Chest, 3D displays, Computed tomography, Lung, Volume rendering, Tissues, 3D image processing, Visualization, Lung cancer, 3D modeling

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Proceedings Article | 15 May 2003 Paper

A simple method for automated lung segmentation in x-ray CT images

Bin Zheng, J. Ken Leader, Glenn Maitz, Brian Chapman, Carl Fuhrman, Robert Rogers, Frank Sciurba, Andrew Perez, Paul Thompson, Walter Good, David Gur

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.480290

KEYWORDS: Lung, Image segmentation, Computed tomography, X-ray computed tomography, Visualization, Image processing, Emphysema, Image filtering, X-ray imaging, X-rays

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Proceedings Article | 15 May 2003 Paper

Feature-based differences between mammograms

Walter Good, Xiao Hui Wang, Glenn Maitz

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.483559

KEYWORDS: Tissues, Mammography, Breast, Image processing, Skin, Image filtering, Image registration, Image compression, Nipple, Diagnostics

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Proceedings Article | 15 May 2003 Paper

Evaluation of quantitative measures of breast tissue density from mammography with truth from MRI data

Xiao Hui Wang, Brian Chapman, Cynthia Britton, Saraswathi Golla, Luisa Wallace, Walter Good

Proceedings Volume 5032, (2003) https://doi.org/10.1117/12.481923

KEYWORDS: Tissues, Breast, Magnetic resonance imaging, Mammography, Algorithm development, Breast cancer, Signal attenuation, Skin, Image processing, Image segmentation

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Proceedings Article | 9 May 2002 Paper

Incorporation of negative regions in a knowledge-based computer-aided detection scheme

Yuan-Hsiang Chang, Xiao Hui Wang, Lara Hardesty, Christiane Hakim, Bin Zheng, Walter Good, David Gur

Proceedings Volume 4684, (2002) https://doi.org/10.1117/12.467215

KEYWORDS: Mammography, Computer aided design, Computer aided diagnosis and therapy, Image processing, Information fusion, Breast cancer, Tissues, Feature extraction, Radiology

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Proceedings Article | 9 May 2002 Paper

Automated estimation of breast composition from MR images

Brian Chapman, Xiao Hui Wang, Walter Good

Proceedings Volume 4684, (2002) https://doi.org/10.1117/12.467150

KEYWORDS: Breast, Tissues, Image segmentation, Binary data, Chest, Magnetic resonance imaging, Gold, Mammography, Breast cancer, Neural networks

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Proceedings Article | 9 May 2002 Paper

Automatic quality assessment of JPEG and JPEG 2000 compressed images

Walter Good, Glenn Maitz, Xiao Hui Wang

Proceedings Volume 4684, (2002) https://doi.org/10.1117/12.467050

KEYWORDS: Image compression, Mammography, Image quality, Diagnostics, Image filtering, Tissues, Linear filtering, Image processing, Image quality standards, Radiology

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Proceedings Article | 9 May 2002 Paper

Change of region conspicuity in bilateral mammograms: potential impact on CAD performance

Bin Zheng, Xiao Hui Wang, Yuan-Hsiang Chang, Lara Hardesty, Marie Ganott, Walter Good, David Gur

Proceedings Volume 4684, (2002) https://doi.org/10.1117/12.467217

KEYWORDS: Skin, Nipple, Chest, Mammography, Computer aided diagnosis and therapy, Image registration, Computer aided design, Algorithm development, Tissues, Breast

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Proceedings Article | 3 July 2001 Paper

Computerized analysis of lesions in 3D MR breast images

He Wang, Bin Zheng, Walter Good, Xiao Hui Wang

Proceedings Volume 4322, (2001) https://doi.org/10.1117/12.431064

KEYWORDS: Image registration, Breast, Magnetic resonance imaging, 3D image processing, Tissues, Image segmentation, Breast cancer, 3D image enhancement, Mammography, Feature extraction

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Proceedings Article | 28 May 2001 Paper

Correction of digitized mammograms to enhance soft display and tissue composition measurement

Xiao Hui Wang, Bin Zheng, Yuan-Hsiang Chang, Walter Good

Proceedings Volume 4319, (2001) https://doi.org/10.1117/12.428071

KEYWORDS: Tissues, Breast, Skin, Mammography, Image compression, Image processing, Neural networks, Image enhancement, Image display, Image classification

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Proceedings Article | 18 April 2000 Paper

Image modification for display of temporal sequences of mammograms

Walter Good, Glenn Maitz, John Drescher, Xiao Hui Wang, Bin Zheng, Yuan-Hsiang Chang, He Wang

Proceedings Volume 3976, (2000) https://doi.org/10.1117/12.383039

KEYWORDS: Mammography, Image registration, Skin, Tissues, Breast, Nipple, Chest, Image compression, Sensors, Image restoration

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Proceedings Article | 14 April 2000 Paper

Using a constrained formulation based on probability summation to fit receiver operating characteristic (ROC) curves

Richard Swensson, Jill King, Walter Good, David Gur

Proceedings Volume 3981, (2000) https://doi.org/10.1117/12.383102

KEYWORDS: Error analysis, Statistical analysis, Medical imaging, Polonium, Data modeling, Receivers, Chest, Chest imaging, Solids, Target detection

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Proceedings Article | 24 May 1999 Paper

Gains in accuracy from averaging ratings of abnormality

Richard Swensson, Jill King, David Gur, Walter Good

Proceedings Volume 3663, (1999) https://doi.org/10.1117/12.349630

KEYWORDS: Statistical analysis, Error analysis, Statistical modeling, Chest imaging, Image compression, Data analysis, Radiology, Medical imaging, Receivers, Astatine

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Proceedings Article | 24 May 1999 Paper

Observer performance assessment of JPEG-compressed high-resolution chest images

Walter Good, Glenn Maitz, Jill King, Rose Gennari, David Gur

Proceedings Volume 3663, (1999) https://doi.org/10.1117/12.349627

KEYWORDS: Image compression, Quantization, Image resolution, Image quality, Chest, Chromium, Image quality standards, Standards development, Signal to noise ratio, Chest imaging

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Proceedings Article | 21 May 1999 Paper

Optimizing the feature set for a Bayesian network for breast cancer diagnosis using genetic algorithm techniques

Xiao Hui Wang, Bin Zheng, Yuan-Hsiang Chang, Walter Good

Proceedings Volume 3661, (1999) https://doi.org/10.1117/12.348560

KEYWORDS: Breast cancer, Gallium, Genetic algorithms, Cancer, Databases, Mammography, Testing and analysis, Breast, Computing systems, Image processing

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Proceedings Article | 21 May 1999 Paper

Multi-image CAD employing features derived from ipsilateral mammographic views

Walter Good, Bin Zheng, Yuan-Hsiang Chang, Xiao Hui Wang, Glenn Maitz, David Gur

Proceedings Volume 3661, (1999) https://doi.org/10.1117/12.348602

KEYWORDS: Computer aided diagnosis and therapy, Computer aided design, Mammography, Breast, Nipple, Image processing, Image compression, Image segmentation, Tissues, Algorithm development

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Proceedings Article | 21 May 1999 Paper

Application of a Bayesian belief network in a computer-assisted diagnosis scheme for mass detection

Bin Zheng, Yuan-Hsiang Chang, Xiao Hui Wang, Walter Good, David Gur

Proceedings Volume 3661, (1999) https://doi.org/10.1117/12.348558

KEYWORDS: Databases, Computer aided design, Computer aided diagnosis and therapy, Image segmentation, Computer networks, Mammography, Image processing, Artificial neural networks, Genetic algorithms, Breast cancer

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Proceedings Article | 21 May 1999 Paper

Generalized procrustean image deformation for subtraction of mammograms

Walter Good, Bin Zheng, Yuan-Hsiang Chang, Xiao Hui Wang, Glenn Maitz

Proceedings Volume 3661, (1999) https://doi.org/10.1117/12.348559

KEYWORDS: Skin, Image registration, Mammography, Nipple, Tissues, Image processing, Breast, Image restoration, Computer aided design, Bismuth

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Proceedings Article | 24 June 1998 Paper

Assessment of mass detection using tissue background information as input to a computer-assisted diagnosis scheme

Bin Zheng, Yuan-Hsiang Chang, Walter Good, David Gur

Proceedings Volume 3338, (1998) https://doi.org/10.1117/12.310888

KEYWORDS: Databases, Computer aided design, Computer aided diagnosis and therapy, Tissues, Neurons, Feature extraction, Medical imaging, Mammography, Artificial neural networks, Image processing

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Proceedings Article | 15 April 1996 Paper

Evaluation of image compression using plausible nonvisually weighted image fidelity measures

Walter Good, Stefanie Lattner, Glenn Maitz

Proceedings Volume 2707, (1996) https://doi.org/10.1117/12.238458

KEYWORDS: Image compression, Image quality, Visualization, Image processing, Mammography, Image visualization, Digital imaging, Computed tomography, Visual process modeling, Image segmentation

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Proceedings Article | 15 April 1996 Paper

Visually weighted assessment of image degradation resulting from image compression

Stefanie Lattner, Walter Good, Glenn Maitz

Proceedings Volume 2707, (1996) https://doi.org/10.1117/12.238481

KEYWORDS: Image compression, Visualization, Visual process modeling, Image processing, Visual compression, Image quality, Wavelets, Image filtering, Radiology, Computed tomography

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Proceedings Article | 15 May 1994 Paper

Data entry issues in the PACS environment

Stefanie Lattner, Walter Good, John Herron, David Gur

Proceedings Volume 2165, (1994) https://doi.org/10.1117/12.174303

KEYWORDS: Information security, Scanners, Human-machine interfaces, Computed tomography, Data acquisition, Picture Archiving and Communication System, Imaging systems, Databases, Telecommunications, Computer security

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Proceedings Article | 1 July 1992 Paper

Concept and design considerations for an electronic film library

Walter Good, Catherine Burzik, Paul Scanlon, Glenn Maitz, John Herron, David Gur

Proceedings Volume 1654, (1992) https://doi.org/10.1117/12.60272

KEYWORDS: Manufacturing, Optical fabrication, Optical character recognition, Optical discs, Computed tomography, Scanners

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Proceedings Article | 1 June 1992 Paper

Quantization techniques for the compression of chest images by JPEG-type algorithms

Walter Good, David Gur

Proceedings Volume 1652, (1992) https://doi.org/10.1117/12.59418

KEYWORDS: Quantization, Image compression, Image filtering, Chest, Image processing, Image quality standards, Medical imaging, Nonlinear filtering, Computer programming, Image quality

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Proceedings Article | 1 May 1992 Paper

Simultaneous and sequential display of ICU AP-chest images

David Gur, Walter Good, Jill King

Proceedings Volume 1653, (1992) https://doi.org/10.1117/12.59495

KEYWORDS: Chest, Image quality, Diagnostics, Radiography, Image resolution, Modulation transfer functions, Image display, Radiology, Displays, Computed tomography

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Proceedings Article | 1 July 1991 Paper

Effect of experimental design on sample size

Howard Rockette, Nancy Obuchowski, David Gur, Walter Good

Proceedings Volume 1446, (1991) https://doi.org/10.1117/12.45282

KEYWORDS: Diagnostics, Statistical analysis, Imaging systems, Medical imaging, Picture Archiving and Communication System, Electronic filtering, Error analysis, Radiology, Analytical research, Direct methods

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Proceedings Article | 1 August 1990 Paper

Implementation of a high-resolution workstation for primary diagnosis of projection radiography images

Walter Good, John Herron, Glenn Maitz, David Gur, Stephen Miller, William Straub, Carl Fuhrman

Proceedings Volume 1234, (1990) https://doi.org/10.1117/12.18950

KEYWORDS: Diagnostics, Image resolution, Image processing, Chest, Radiography, Databases, Data storage, Medical imaging, Picture Archiving and Communication System, Imaging systems

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Proceedings Article | 1 August 1990 Paper

Training observers for receiver operating characteristic studies

William Straub, Howard Rockette, Jill King, Nancy Obuchowski, Walter Good, John Feist, Barbara Good, Charles Metz

Proceedings Volume 1234, (1990) https://doi.org/10.1117/12.18953

KEYWORDS: Imaging systems, Diagnostics, Receivers, Computing systems, Picture Archiving and Communication System, Radiology, Surgery, Image segmentation, Statistical analysis, Medical imaging

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Proceedings Article | 1 July 1990 Paper

X-ray imaging with 2048 x 2048 CCD array

John Herron, Eric Daxon, David Gur, Walter Good, Glenn Maitz, Stephen Miller

Proceedings Volume 1231, (1990) https://doi.org/10.1117/12.18813

KEYWORDS: Charge-coupled devices, Imaging systems, Fiber optics, X-ray imaging, Medical imaging, X-rays, Image acquisition, Sensors, Control systems, Cameras

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Proceedings Article | 1 July 1990 Paper

Digital x-ray imaging with two-dimensional charge-coupled device arrays

John Herron, David Gur, Eric Daxon, Walter Good, Chris Shaw, Glenn Maitz, Joseph Boyer

Proceedings Volume 1231, (1990) https://doi.org/10.1117/12.18828

KEYWORDS: Charge-coupled devices, Fiber optics, Image resolution, Signal to noise ratio, Medical imaging, Image acquisition, Imaging systems, Modulation transfer functions, Digital x-ray imaging, Cameras

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Showing 5 of 36 publications

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