Ms. Teresa Osicka Profile

Teresa Osicka

at Georgetown Univ Medical Ctr

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 5 March 2007 Paper

Characterization of pulmonary nodules on computer tomography (CT) scans: the effect of additive white noise on features selection and classification performance

Teresa Osicka, Matthew Freedman, Farid Ahmed

Proceedings Volume 6512, 651245 (2007) https://doi.org/10.1117/12.709576

KEYWORDS: Wavelets, Lung, Image classification, Computed tomography, Discrete wavelet transforms, Image segmentation, Feature selection, Lung cancer, Feature extraction, Cancer

Read Abstract +

Proceedings Article | 17 March 2006 Paper

Characterization of pulmonary nodules features on computer tomography (CT) scans using wavelet coefficients and heat maps

Teresa Osicka, Matthew Freedman, Farid Ahmed

Proceedings Volume 6144, 614463 (2006) https://doi.org/10.1117/12.653198

KEYWORDS: Discrete wavelet transforms, Wavelets, Feature extraction, Computed tomography, Lung, Visualization, Feature selection, Cancer, Lung cancer, Visual analytics

Read Abstract +

Proceedings Article | 29 April 2005 Paper

Mass segmentation of dense breasts on digitized mammograms: analysis of a probability-based function

Lisa Kinnard, Shih-Chung Lo, Eva Duckett, Erini Makariou, Teresa Osicka, Matthew Freedman, Mohamed Chouikha

Proceedings Volume 5747, (2005) https://doi.org/10.1117/12.594842

KEYWORDS: Image segmentation, Breast, Mammography, Tissues, Radiology, Statistical analysis, Cancer, Diagnostics, Computer aided diagnosis and therapy, Visualization

Read Abstract +

Proceedings Article | 6 April 2005 Paper

Computer aided detection of lung cancer in the absence of the cancer on chest radiographs: effect of the computer-aided detection on radiologists’ performance on cancer-free cases

Teresa Osicka, Matthew Freedman, Shih-Chung Lo, Fleming Lure, Xin-Wei Xu, Jesse Lin, Ron Zhang, Hui Zhao

Proceedings Volume 5749, (2005) https://doi.org/10.1117/12.594568

KEYWORDS: Computer aided diagnosis and therapy, Cancer, Lung cancer, Chest imaging, Clinical trials, CAD systems, Switches, Statistical analysis, Radiography

Read Abstract +

Using data from a clinical trial of a commercial CAD system for lung cancer detection we separately analyzed the location, if any, selected on each film by 15 radiologists as they interpreted chest radiographs, 160 of which did not contain cancers. On the cancer-free cases, the radiologists showed statistically significant difference in decisions while using the CAD (p-value 0.002). Average specificity without computer assistance was 78%, and with computer assistance 73%. In a clinical trial with CAD for lung cancer detection there are multiple machine false positives. On chest radiographs of older current or former smokers, there are many scars that can appear like cancer to the interpreting radiologists. We are reporting on the radiologists' false positives and on the effect of machine false positive detections on observer performance on cancer-free cases. The only difference between radiologists occurred when they changed their initial true negative decision to false positive (p-value less than 0.0001), average confidence level increased, on the scale from 0.0 to 100.0, from 16.9 (high confidence of non-cancer) to 53.5 (moderate confidence cancer was present). We are reporting on the consistency of misinterpretation by multiple radiologists when they interpret cancer-free radiographs of smokers in the absence of CAD prompts. When multiple radiologists selected the same false positive location, there was usually a definite abnormality that triggered this response. The CAD identifies areas that are of sufficient concern for cancer that the radiologists will switch from a correct decision of no cancer to mark a false positive, previously overlooked, but suspicious appearing cancer-free area; one that has often been marked by another radiologist without the use of the CAD prompt. This work has implications on what should be accepted as ground truth in ROC studies: One might ask, "What a false positive response means?" when the finding, clinically, looks like cancer-it just isn’t cancer, based on long-term follow-up or histology.

Proceedings Article | 4 May 2004 Paper

Computer-aided detection of lung cancer on chest radiographs: effect of machine CAD true positive/false negative detections on radiologists' confidence level

Matthew Freedman, Teresa Osicka, Shih-Chung Benedict Lo, Fleming Lure, Xin-Wei Xu, Jesse Lin, Hui Zhao, Ron Zhang

Proceedings Volume 5372, (2004) https://doi.org/10.1117/12.536157

KEYWORDS: Computer aided diagnosis and therapy, Cancer, Lung cancer, Chest imaging, Medical imaging, Clinical trials, CAD systems

Read Abstract +

Proceedings Article | 22 May 2003 Paper

Computer-aided detection of lung cancer on chest radiographs: differences in the interpretation time of radiologists showing versus not showing improvement with CAD

Teresa Osicka, Matthew Freedman, Shih-Chung Lo, Fleming Lure, Xin-Wei Xu, Jesse Lin, Hui Zhao, Ron Zhang

Proceedings Volume 5034, (2003) https://doi.org/10.1117/12.480347

KEYWORDS: Cancer, Computer aided diagnosis and therapy, Lung cancer, Chest imaging, CAD systems, Clinical trials, Medical imaging, Diagnostics, Classification systems

Read Abstract +

Proceedings Article | 9 May 2002 Paper

Computer-aided detection of lung cancer on chest radiographs: effect of machine CAD false-positive locations on radiologists' behavior

Matthew Freedman, Shih-Chung Lo, Teresa Osicka, Fleming Lure, Xin-Wei Xu, Jesse Lin, Hui Zhao, Ron Zhang

Proceedings Volume 4684, (2002) https://doi.org/10.1117/12.467092

KEYWORDS: Computer aided diagnosis and therapy, Lung cancer, Chest imaging, Cancer, CAD systems, Clinical trials, Computing systems, Biopsy, Medical imaging

Read Abstract +

Proceedings Article | 26 June 2001 Paper

Methods for identifying changes in radiologists' behavioral operating point of sensitivity-specificity trade-offs within an ROC study of the use of computer-aided detection of lung cancer

Matthew Freedman, Teresa Osicka, Shih-Chung Lo, Fleming Lure, Xin-Wei Xu, Jesse Lin, Ron Zhang

Proceedings Volume 4324, (2001) https://doi.org/10.1117/12.431187

KEYWORDS: Cancer, Computer aided diagnosis and therapy, Lung cancer, Mammography, Digital mammography, Statistical analysis, Biopsy, Diagnostics, Lead

Read Abstract +

Proceedings Article | 28 May 2001 Paper

Computer-aided detection of lung cancer on chest radiographs: algorithm performance vs. radiologists' performance by size of cancer

Matthew Freedman, Shih-Chung Lo, Fleming Lure, Xin-Wei Xu, Jesse Lin, Hui Zhao, Teresa Osicka, Ron Zhang

Proceedings Volume 4319, (2001) https://doi.org/10.1117/12.428048

KEYWORDS: Cancer, Computer aided diagnosis and therapy, Lung cancer, Chest imaging, Remote sensing, Computing systems, Detection and tracking algorithms, System integration, CAD systems

Read Abstract +

Showing 5 of 9 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years