Research Topics
| CRAIG KENDALL ABBEYSummaryAffiliation: University of California Country: USA Publications
Research Grants
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Detail Information
Publications
An ideal observer approach to mechanical limits in b-mode ultrasound imagingCraig K Abbey
Dept of Psychological and Brain Sciences, U C Santa Barbara, CA 93106, USA
Conf Proc IEEE Eng Med Biol Soc 2012:2306-9. 2012..However these gains are almost completely erased after computation of a standard b-mode envelope...
Non-Gaussian statistical properties of breast imagesCraig K Abbey
Department of Psychology, University of California, Santa Barbara, CA, USA
Med Phys 39:7121-30. 2012..The authors' purpose is to quantify and characterize non-Gaussian statistical properties of breast images as influenced by processing of a digital mammogram, different imaging modalities, and breast density...- Effects of frequency and bandwidth on diagnostic information transfer in ultrasonic B-mode imagingCraig K Abbey
Department of Psychology, University of California, Santa Barbara, CA, USA
IEEE Trans Ultrason Ferroelectr Freq Control 59:1115-26. 2012..In addition, at higher frequencies more information is lost in the processing and reading than in the acquisition of reflected signals... 
Classification images for detection, contrast discrimination, and identification tasks with a common ideal observerCraig K Abbey
Department of Psychology, University of California, Santa Barbara, CA 93106, USA
J Vis 6:335-55. 2006..We evaluate the effect of nonlinear transducers and intrinsic spatial uncertainty to explain divergence from the ideal observer found in detection and contrast discrimination tasks...- Preclinical imaging of mammary intraepithelial neoplasia with positron emission tomographyCraig K Abbey
Department of Biomedical Engineering, University of California, Davis, CA 95616, USA
J Mammary Gland Biol Neoplasia 11:137-49. 2006..We conclude with a brief survey of emerging approaches in small-animal PET imaging... - Classification images for simple detection and discrimination tasks in correlated noiseCraig K Abbey
Department of Psychology, University of California, Santa Barbara, California 93106, USA
J Opt Soc Am A Opt Image Sci Vis 24:B110-24. 2007..This adaptation is captured in the frequency weighting of the classification images... - Contrast and stimulus information effects in rapid learning of a visual taskCraig K Abbey
Department of Psychology, University of California, Santa Barbara, CA 93106, USA
J Vis 8:8.1-14. 2008..Lastly, we show that the disparity between task performance and accumulated knowledge of the target profile can be largely explained by a model that only allows learning to occur in trials the observer performs correctly... - An equivalent relative utility metric for evaluating screening mammographyCraig K Abbey
Department of Biomedical Engineering, University of California, Davis, CA, USA
Med Decis Making 30:113-22. 2010..As examples of application of ERU, they reanalyze 2 recently published reports using recall and detection rates in screening mammography... - Frequency tuning of perceptual templates changes with noise magnitudeCraig K Abbey
Department of Psychology, University of California Santa Barbara, Santa Barbara, California 93106, USA
J Opt Soc Am A Opt Image Sci Vis 26:B72-83. 2009..Our results provide direct evidence against the notion of a single consistent perceptual template mediating detection across different levels of noise... - Optimal beamforming in ultrasound using the ideal observerCraig K Abbey
Department of Psychology, University ofCalifornia, Santa Barbara, Santa Barbara, CA, USA
IEEE Trans Ultrason Ferroelectr Freq Control 57:1782-96. 2010..We also show that a post-compression processing before the computation of an envelope is necessary to pass the diagnostic information in the beamformed radio-frequency signal to the final envelope image... - Observer efficiency in discrimination tasks simulating malignant and benign breast lesions imaged with ultrasoundCraig K Abbey
Department of Biomedical Engineering, University of California at Davis, CA 93106, USA
IEEE Trans Med Imaging 25:198-209. 2006..We also use the Smith-Wagner approach to distinguish between human and processing inefficiencies, and find that generally the principle limitation comes from the information lost in computing the final envelope image... - Optimal shifted estimates of human-observer templates in two-alternative forced-choice experimentsCraig K Abbey
Department of Biomedical Engineering, University of California, Davis 95616, USA
IEEE Trans Med Imaging 21:429-40. 2002..We also propose and validate a formula for approximating the error covariance associated with the template estimates... - Virtual evolution for visual search in natural images results in behavioral receptive fields with inhibitory surroundsSheng Zhang
Vision and Image Understanding Laboratory, Department of Psychology, University of California, Santa Barbara, California 93106 9660, USA
Vis Neurosci 26:93-108. 2009..g., Graham et al., 2006), to explain the evolution of center-surround organization of receptive fields in early vision... - Ideal observer model for detection of blood perfusion and flow using ultrasoundRoger J Zemp
Department of Biomedical Engineering, University of California, Davis, CA 95616, USA
Inf Process Med Imaging 18:318-29. 2003..Aliasing can degrade performance. The ideal observer model provides a framework for assessing the performance of Power Doppler ultrasound systems, and may aid in their design... - The footprints of visual attention in the Posner cueing paradigm revealed by classification imagesMiguel P Eckstein
Department of Psychology, University of California, Santa Barbara, CA, USA
J Vis 2:25-45. 2002.... - Perceptual learning through optimization of attentional weighting: human versus optimal Bayesian learnerMiguel P Eckstein
Vision and Image Understanding Lab, Department of Psychology, UC Santa Barbara, Santa Barbara, CA 93106 9660, USA
J Vis 4:1006-19. 2004..Finally, the proposed theory and paradigm provide a flexible framework for future studies to evaluate the optimality of human learning of other visual cues and/or sensory modalities... - In vivo positron-emission tomography imaging of progression and transformation in a mouse model of mammary neoplasiaCraig K Abbey
Department of Biomedical Engineering, University of California, One Shields Avenue, Davis, CA 95616, USA
Proc Natl Acad Sci U S A 101:11438-43. 2004..Furthermore, quantitative markers of disease extracted from the images can be used to track proliferation and progression in vivo over multiple time points... - Spatial profiles of local and nonlocal effects upon contrast detection/discrimination from classification imagesSteven S Shimozaki
Department of Psychology, University of California, Santa Barbara, CA, USA
J Vis 5:45-57. 2005..Little or no change was found in the classification images across stimulus duration, suggesting that both the local and nonlocal processes found in this study were completed within 100 ms... - An ideal observer with channels versus feature-independent processing of spatial frequency and orientation in visual search performanceSteven S Shimozaki
Department of Psychology, University of California, Santa Barbara, Santa Barbara, California 93101 9660, USA
J Opt Soc Am A Opt Image Sci Vis 20:2197-215. 2003..An ideal observer with channels jointly tuned to spatial frequency and orientation predicted human performance across both small and large target-distractor differences... - Stimulus information contaminates summation tests of independent neural representations of featuresSteven S Shimozaki
Department of Psychology, University of California, Santa Barbara, CA, USA
J Vis 2:354-70. 2002..In this case, human performance did not improve with increasing number of features, implying that the improvement observed with additional features may be due to stimulus information and not the combination across independent features... - The surprisingly high human efficiency at learning to recognize facesMatthew F Peterson
Department of Psychology, Vision and Image Understanding Laboratory, University of California, Santa Barbara, CA 93106, USA
Vision Res 49:301-14. 2009..Together, the results suggest that humans can show large performance improvement effects in discriminating faces as they learn to identify the feature containing the discriminatory information... - Comparison of two weighted integration models for the cueing task: linear and likelihoodSteven S Shimozaki
Department of Psychology, University of California, Santa Barbara, CA, USA
J Vis 3:209-29. 2003..The sum of weighted likelihoods model best described the psychophysical results, suggesting that human observers approximate a weighted combination of likelihoods, and not a weighted linear combination... - Classification image analysis: estimation and statistical inference for two-alternative forced-choice experimentsCraig K Abbey
Department of Biomedical Engineering, University of California, Davis, CA, USA
J Vis 2:66-78. 2002..As an example of how the methods we describe can be used, we present a case study investigating detection of a Gaussian bump profile... - Learning cue validity through performance feedbackJason A Droll
Department of Psychology, University of California Santa Barbara, CA 93106, USA
J Vis 9:18.1-23. 2009..Comparison to an ideal observer reveals that the rate at which participants learned cue validity was suboptimal, which may have impaired performance during initial familiarization with scene statistics... - Linear approach to axial resolution in elasticity imagingJie Liu
Department of Biomedical Engineering, University of California Davis, Davis, CA, USA
IEEE Trans Ultrason Ferroelectr Freq Control 51:716-25. 2004..We found that the correlation window determines axial resolution in most practical situations, but that the the same system properties that determine B-mode resolution ultimately limit elasticity imaging... - Detection performance theory for ultrasound imaging systemsRoger J Zemp
Department of Biomedical Engineering, University of California Davis, Davis, CA 95616, USA
IEEE Trans Med Imaging 24:300-10. 2005..For example it may help us understand how to push the limits of specific features, such as spatial resolution, without significantly compromising overall detection performance... - Linear system models for ultrasonic imaging: application to signal statisticsRoger J Zemp
Department of Biomedical Engineering, University of California, Davis, CA 95616, USA
IEEE Trans Ultrason Ferroelectr Freq Control 50:642-54. 2003..Also revealed is an opportunity to enhance near- and far-field spatial resolution by matched filtering unfocused beams. The analysis connects several well-known approaches to modeling ultrasonic echo signals... - Rapamycin inhibits growth of premalignant and malignant mammary lesions in a mouse model of ductal carcinoma in situRuria Namba
Department of Pathology and Laboratory Medicine, School of Medicine, University of California, Davis, Sacramento, CA 95817, USA
Clin Cancer Res 12:2613-21. 2006..Although the inhibitory effect of rapamycin was striking, rapamycin treatment did not completely obliterate the lesions... - Targeted in vivo imaging of integrin alphavbeta6 with an improved radiotracer and its relevance in a pancreatic tumor modelSven H Hausner
Department of Biomedical Engineering, University of California Davis, Davis, California 95616, USA
Cancer Res 69:5843-50. 2009..The fact that these tumors express alpha(v)beta(6) suggests that this probe has significant potential for the in vivo detection of this malignancy, thus having important implications for patient care and therapy... - High-throughput in vivo screening of targeted molecular imaging agentsM Karen J Gagnon
Department of Biomedical Engineering, University of California, Davis, CA 95616, USA
Proc Natl Acad Sci U S A 106:17904-9. 2009..This study is the first example of the practical application of a high-throughput screening approach using microPET imaging of [(18)F]-labeled peptides for the rapid in vivo identification of potential new molecular imaging agents... - Imaging and pharmacokinetics of (64)Cu-DOTA-HB22.7 administered by intravenous, intraperitoneal, or subcutaneous injection to mice bearing non-Hodgkin's lymphoma xenograftsShiloh M Martin
Division of Hematology and Oncology, Department of Internal Medicine, University of California, Davis Cancer Center, Davis, CA, USA
Mol Imaging Biol 11:79-87. 2009..The aim of the study is to compare the tumor-specific targeting, pharmacokinetics, and biodistribution of (64)Cu-DOTA-HB22.7 when administered to xenograft-bearing mice intravenously (IV), intraperitoneally (IP), and subcutaneously (SQ)...
Research Grants
- Quantitative Assessment of Murine Tumors with MicroPET.Craig Abbey; Fiscal Year: 2004..The third study proposes a study in which a well-known therapeutic agent, tamoxifen, is introduced. The data from this study will allow evaluation of the magnitude and statistical significance of a therapeutic effect. ..