PRESTON THOMAS FLETCHER portrait
  • Adjunct Associate Professor, School Of Computing
  • Associate Professor, School Of Computing
801-587-9641

Publications

  • P. T. Fletcher (date unknown). P. T. Fletcher. “Geodesic Regression and Its Application to Shape Analysis.” In: Innovations for Shape Analysis. Springer, 2013, pp. 35–52.. Accepted, .
  • (date unknown). Pizer, S, Styner, M, Terriberry, T, Broadhurst, R, Joshi, S, Chaney, E, Fletcher, PT. Statistical Applications with Deformable M-Reps. In Medial Representations Mathematics, Algorithms and Applications, chp. 9, Springer, 2009.. Accepted, .
  • (date unknown). Pizer, S, Han, Q, Joshi, S, Fletcher, PT, Yushkevich, PA, Thall, A. Synthesis, Deformation, and Statistics of 3D Objects via M-reps. In Medial Representations Mathematics, Algorithms and Applications, chp. 8, Springer, 2009.. Accepted, .
  • Yen-Yun Yu (date unknown). Yen-Yun Yu, P Thomas Fletcher, Suyash P Awate, Hierarchical Bayesian Modeling, Estimation, and Sampling for Multigroup Shape Analysis, Medical Image Computing and Computer-Assisted Intervention–MICCAI 2014, pp. 9-16, 2014. Accepted, .
  • Miaomiao Zhang (date unknown). Miaomiao Zhang, P Thomas Fletcher, Bayesian Principal Geodesic Analysis in Diffeomorphic Image Registration, Medical Image Computing and Computer-Assisted Intervention–MICCAI 2014, pp. 121-128, 2014. Accepted, .
  • Neda Sadeghi (date unknown). Neda Sadeghi, P Thomas Fletcher, Marcel Prastawa, John H Gilmore, Guido Gerig, Subject-Specific Prediction Using Nonlinear Population Modeling: Application to Early Brain Maturation from DTI, Medical Image Computing and Computer-Assisted Intervention–MICCAI 2014, pp. 33-40, 2014. Accepted, .
  • Prasanna Muralidharan (date unknown). Prasanna Muralidharan, James Fishbaugh, Hans J Johnson, Stanley Durrleman, Jane S Paulsen, Guido Gerig, P Thomas Fletcher, Diffeomorphic Shape Trajectories for Improved Longitudinal Segmentation and Statistics, Medical Image Computing and Computer-Assisted Intervention–MICCAI 2014, pp. 49-56, 2014. Accepted, .
  • Nikhil Singh (date unknown). Nikhill Singh, Angela Y. Wang, Preethi Sankaranarayanan, P. Thomas Fletcher and Sarang Joshi. Genetic, Structural and Functional Imaging Biomarkers for Early Detection of Conversion from MCI to AD., Medical Image Computing and Computer-Assisted Intervention (MICCAI), 2012. Accepted, .
  • Wei Liu (date unknown). Wei Liu, Suyash P. Awate, and P. Thomas Fletcher. Group Analysis of Resting-State fMRI by Hierarchical Markov Random Fields, Medical Image Computing and Computer-Assisted Intervention (MICCAI), 2012. Accepted, .
  • Wei Liu (date unknown). Liu, W., Awate, S., Anderson, J.S., Yurgelun-Todd, D., Fletcher, P.T., Monte Carlo Expectation Maximization with Hidden Markov Models to Detect Functional Networks in Resting-State fMRI, MICCAI workshop on Machine Learning in Medical Imaging, 2011. Accepted, .
  • P. Thomas Fletcher (date unknown). Fletcher, P.T., Geodesic Regression on Riemannian Manifolds, MICCAI Workshop on Mathematical Foundations of Computational Anatomy, 2011. Accepted, .
  • Neda Sadeghi (date unknown). Sadeghi, N., Prastawa, M., Fletcher, P.T., Gilmore, J.H., Lin, W., Gerig, G., Statistical Growth Modeling of Longitudinal DT-MRI for Regional Characterization of Early Brain Development, MICCAI workshop on Image Analysis of Human Brain Development, 2011. Accepted, .
  • Jacob Hinkle (date unknown). Hinkle, J., Muralidharan, P., Fletcher, P.T., Joshi, S., Polynomial Regression on Rie- mannian Manifolds, European Conference on Computer Vision (ECCV), 2012. Accepted, .
  • Fleishman GM, Gutman BA, Fletcher PT, Thompson PM (date unknown). Simultaneous Longitudinal Registration with Group-Wise Similarity Prior. (pp. 746-57). Vol. 24. Information processing in medical imaging : proceedings of the ... conference. Accepted, .
  • Gutman BA, Fletcher PT, Cardoso MJ, Fleishman GM, Lorenzi M, Thompson PM, Ourselin S (date unknown). A Riemannian Framework for Intrinsic Comparison of Closed Genus-Zero Shapes. (pp. 205-18). Vol. 24. Information processing in medical imaging : proceedings of the ... conference. Accepted, .
  • Zhang M, Fletcher PT (date unknown). Finite-Dimensional Lie Algebras for Fast Diffeomorphic Image Registration. (pp. 249-59). Vol. 24. Information processing in medical imaging : proceedings of the ... conference. Accepted, .
  • Prasanna Muralidharan (date unknown). Muralidharan, P., Fletcher P.T., Sasaki metrics for analysis of longitudinal data on manifolds, IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2012. Accepted, .
  • John Moeller (date unknown). Fletcher, P.T., Moeller, J., Phillips, J.M., Venkatasubramanian, S., Horoball Hulls and Extents in Positive Definite Space, 12th Algorithms and Data Structure Symposium (WADS), 2011. Accepted, .
  • Xiang Hao (date unknown). Hao, X., Whitaker, R., Fletcher, P.T., Adaptive Riemannian Metrics for Improved Geodesic Tracking of White Matter, Information Processing in Medical Imaging, pp. 13--24, 2011. Accepted, .
  • Fleishman GM, Gutman BA, Fletcher PT, Thompson P (date unknown). A Transformation Similarity Constraint for Groupwise Nonlinear Registration in Longitudinal Neuro Imaging Studies. Vol. 9413. Proceedings of SPIE--the International Society for Optical Engineering. Accepted, .
  • Anuja Sharma (date unknown). Anuja Sharma, P Thomas Fletcher, John H Gilmore, Maria L Escolar, Aditya Gupta, Martin Styner, Guido Gerig, Parametric regression scheme for distributions: Analysis of DTI fiber tract diffusion changes in early brain development, 2014 IEEE 11th International Symposium on Biomedical Imaging (ISBI), pp. 559-562, 2014. Accepted, .
  • Bo Wang (date unknown). Bo Wang, Wei Liu, Marcel Prastawa, Andrei Irima, Paul M Vespa, John D van Horn, P Thomas Fletcher, Guido Gerig, 4D active cut: An interactive tool for pathological anatomy modeling, 2014 IEEE 11th International Symposium on Biomedical Imaging (ISBI), pp. 529-532, 2014. Accepted, .
  • Nikhil Singh (date unknown). Nikhil Singh, Jacob Hinkle, Sarang Joshi, P Thomas Fletcher, An efficient parallel algorithm for hierarchical geodesic models in diffeomorphisms, 2014 IEEE 11th International Symposium on Biomedical Imaging (ISBI), pp. 341-344, 2014. Accepted, .
  • M. Zhang (date unknown). M. Zhang and P. T. Fletcher. “Probabilistic Principal Geodesic Analysis.” In: Neural Information Processing Systems. 2013. Accepted, .
  • M. Zhang (date unknown). M. Zhang, N. P. Singh, and P. T. Fletcher. “Bayesian Estimation of Regularization and Atlas Building in Diffeomorphic Image Registration.” In: Proceedings of the International Conference on Information Processing in Medical Imaging (IPMI). 2013. Accepted, .
  • X. Hao (date unknown). X. Hao and P. T. Fletcher. “Joint Fractional Segmentation and Multi-Tensor Estimation in Diffusion MRI.” In: Proceedings of the International Conference on Information Processing in Medical Imaging (IPMI). 2013. Accepted, .
  • X. Zhu (date unknown). X. Zhu, Y. Gur, W. Wang, and P. T. Fletcher. “Model Selection and Estimation of Multi-Compartment Models in Diffusion MRI with a Rician Noise Model.” In: Proceedings of the International Conference on Information Processing in Medical Imaging (IPMI). 2013. Accepted, .
  • N. P. Singh (date unknown). N. P. Singh, J. Hinkle, S. Joshi, and P. T. Fletcher. “A Hierarchical Geodesic Model for Diffeomorphic Longitudinal Shape Analysis.” In: Proceedings of the International Conference on Information Processing in Medical Imaging (IPMI). 2013. Accepted, .
  • E. Wong (date unknown). E. Wong, S. P. Awate, and P. T. Fletcher. “Adaptive Sparsity in Gaussian Graph- ical Models.” In: International Conference on Machine Learning (ICML). 2013. Accepted, .
  • N. Sadeghi (date unknown). N. Sadeghi, M. W. Prastawa, P. T. Fletcher, J. H. Gilmore, and G. Gerig. “Multi- variate Modeling of Longitudinal MRI in Early Brain Development with Confidence Measures.” In: Proceedings of the IEEE International Symposium on Biomedical Imaging (ISBI). 2013. Accepted, .
  • A. Sharma (date unknown). A. Sharma, P. T. Fletcher, J. H. Gilmore, M. L. Escolar, A. Gupta, M. Styner, and G. Gerig. “Spatiotemporal Modeling of Discrete-Time Distribution-Valued Data Applied to DTI Tract Evolution in Infant Neurodevelopment.” In: Proceedings of the IEEE International Symposium on Biomedical Imaging (ISBI). 2013. Accepted, .
  • N. P. Singh (date unknown). N. P. Singh, J. Hinkle, S. Joshi, and P. T. Fletcher. “A Vector Momenta Formulation of Diffeomorphisms for Improved Geodesic Regression and Atlas Construction.” In: Proceedings of the IEEE International Symposium on Biomedical Imaging (ISBI). 2013. Accepted, .
  • (date unknown). Oguz, I, Cates, J, Whitaker, R, Fletcher, PT, Niethammer, M, Styner, M, Cortical Correspondence with Probabilistic Fiber Connectivity, Information Processing in Medical Imaging (IPMI), 2009. Accepted, .
  • (date unknown). Datar, M, Cates, J, Fletcher, PT, Gouttard, S, Gerig, G, Whitaker, R, Particle Based Shape Regression of Open Surfaces with Applications to Developmental Neuroimaging, Medical Image Computing and Computer-Assisted Intervention (MICCAI), 2009. Accepted, .
  • (date unknown). Hinkle, J, Fletcher, PT, Wang, B, Salter, W, Joshi, S. 4D MAP Image Reconstruction Incorporating Organ Motion, Information Processing in Medical Imaging (IPMI), 2009. Accepted, .
  • (date unknown). Tao, R, Fletcher, PT, Gerber, S, Whitaker, R. A Variational Image-Based Approach to the Correction of Susceptibility Artifacts in the Alignment of Diffusion Weighted and Structural MRI, Information Processing in Medical Imaging (IPMI), 2009. Accepted, .
  • Nicholas Lange (date unknown). Nicholas Lange, Brittany G Travers, Erin D Bigler, Molly BD Prigge, Alyson L Froehlich, Jared A Nielsen, Annahir N Cariello, Brandon A Zielinski, Jeffrey S Anderson, P Thomas Fletcher, Andrew A Alexander, Janet E Lainhart, Longitudinal Volumetric Brain Changes in Autism Spectrum Disorder Ages 6–35 Years, Autism Research, 2014. Accepted, .
  • Neda Sadeghi (date unknown). N Sadeghi, M Prastawa, PT Fletcher, J Wolff, JH Gilmore, G Gerig, Regional characterization of longitudinal DT-MRI to study white matter maturation of the early developing brain, NeuroImage, 2012. Accepted, .
  • Brandon Zielinski (date unknown). Brandon A Zielinski, Jeffrey S Anderson, Alyson L Froehlich, Molly BD Prigge, Jared A Nielsen, Jason R Cooperrider, Annahir N Cariello, P Thomas Fletcher, Andrew L Alexander, Nicholas Lange, Erin D Bigler, Janet E Lainhart, scMRI Reveals Large-Scale Brain Network Abnormalities in Autism, PloS one, 7(11), 2012. Accepted, .
  • Wei Liu (date unknown). Wei Liu, Suyash P Awate, Jeffrey S Anderson, P Thomas Fletcher, A functional network estimation method of resting-state fMRI using a hierarchical Markov random field, NeuroImage, vol. 100, pp. 520-534, 2014. Accepted, .
  • Jeffrey S Anderson (date unknown). Jeffrey S Anderson, Jared A Nielsen, Alyson L Froehlich, Molly B DuBray, T Jason Druzgal, Annahir N Cariello, Jason R Cooperrider, Brandon A Zielinski, Caitlin Ravichandran, P Thomas Fletcher, Andrew L Alexander, Erin D Bigler, Nicholas Lange, Janet E Lainhart, Functional connectivity magnetic resonance imaging classification of autism, Brain, 2011. Accepted, .
  • Jacob Hinkle (date unknown). Jacob Hinkle, P Thomas Fletcher, Sarang Joshi, Intrinsic polynomials for regression on Riemannian manifolds, Journal of Mathematical Imaging and Vision, 50(1-2), pp. 32-52, 2014. Accepted, .
  • Valerie A Cardenas (date unknown). Valerie A Cardenas, Duygu Tosun, Linda L Chao, P Thomas Fletcher, Sarang Joshi, Michael W Weiner, Norbert Schuff, Voxel‐Wise Co‐analysis of Macro‐and Microstructural Brain Alteration in Mild Cognitive Impairment and Alzheimer's Disease Using Anatomical and Diffusion MRI, Journal of Neuroimaging, 24 (5), pp. 435-443. Accepted, .
  • Zhang M, Fletcher PT (date unknown). Bayesian principal geodesic analysis for estimating intrinsic diffeomorphic image variability. Medical image analysis. Vol. 25, 37-44. Accepted, .
  • Douglas C Dean III (date unknown). Douglas C Dean III, Brittany G Travers, Nagesh Adluru, Do PM Tromp, Daniel J Destiche, Danica Samsin, Molly B Prigge, Brandon A Zielinski, P Thomas Fletcher, Jeffrey S Anderson, Alyson L Froehlich, Erin D Bigler, Nicholas Lange, Janet E Lainhart, Andrew L Alexander, Investigating the microstructural correlation of white matter in autism spectrum disorder, Brain connectivity 6 (5), 415-433. Accepted, .
  • Brandon A Zielinski (date unknown). Brandon A Zielinski, Molly BD Prigge, Jared A Nielsen, Alyson L Froehlich, Tracy J Abildskov, Jeffrey S Anderson, P Thomas Fletcher, Kristen M Zygmunt, Brittany G Travers, Nicholas Lange, Andrew L Alexander, Erin D Bigler, Janet E Lainhart, Longitudinal changes in cortical thickness in autism and typical development, Brain, 137 (6), pp.... Accepted, .
  • Nikhil Singh (date unknown). Nikhil Singh, P Thomas Fletcher, J Samuel Preston, Richard D King, JS Marron, Michael W Weiner, Sarang Joshi, Alzheimer’s Disease Neuroimaging Initiative (ADNI), Quantifying anatomical shape variations in neurological disorders, Medical image analysis, 18 (3), pp. 616-633, 2014. Accepted, .
  • Travers BG, Tromp do PM, Adluru N, Lange N, Destiche D, Ennis C, Nielsen JA, Froehlich AL, Prigge MB, Fletcher PT, Anderson JS, Zielinski BA, Bigler ED, Lainhart JE, Alexander AL (date unknown). Atypical development of white matter microstructure of the corpus callosum in males with autism: a longitudinal investigation. Molecular autism. Vol. 6, 15. Accepted, .
  • Lange N, Travers BG, Bigler ED, Prigge MB, Froehlich AL, Nielsen JA, Cariello AN, Zielinski BA, Anderson JS, Fletcher PT, Alexander AA, Lainhart JE (date unknown). Longitudinal volumetric brain changes in autism spectrum disorder ages 6-35 years. Autism research : official journal of the International Society for Autism Research. Vol. 8, 82-93. Accepted, .
  • Jared A Nielsen (date unknown). Jared A Nielsen, Brandon A Zielinski, P Thomas Fletcher, Andrew L Alexander, Nicholas Lange, Erin D Bigler, Janet E Lainhart, Jeffrey S Anderson, Abnormal lateralization of functional connectivity between language and default mode regions in autism, Molecular autism, 5 (8), pp. 1-11, 2014. Accepted, .
  • Xiang Hao (date unknown). Xiang Hao, Kristen Zygmunt, Ross T Whitaker, P Thomas Fletcher, Improved segmentation of white matter tracts with adaptive Riemannian metrics, Medical image analysis, 18 (1), pp. 161-175, 2014. Accepted, .
  • X. Hao (date unknown). X. Hao, K. Zygmunt, R. Whitaker, and P. T. Fletcher. “Improved Segmentation of White Matter Tracts with Adaptive Riemannian Metrics.” In: Medical Image Analysis (2013). Accepted, .
  • M. D. Prigge (date unknown). M. D. Prigge, E. D. Bigler, P. T. Fletcher, B. A. Zielinski, C. Ravichandran, J. An- derson, A. Froehlich, T. Abildskov, E. Papadopolous, K. Maasberg, J. A. Nielsen, A. L. Alexander, N. Lange, and J. Lainhart. “Longitudinal Heschl’s Gyrus Growth During Childhood and Adolescence in Typical Development and Autism.” In: Autism Research 6.2 (2013), pp. 78–90. Accepted, .
  • V. A. Cardenas (date unknown). V. A. Cardenas, D. Tosun, L. L. Chao, P. T. Fletcher, S. Joshi, M. W. Weiner, and N. Schuff. “Voxel-Wise Co-analysis of Macro-and Microstructural Brain Alter- ation in Mild Cognitive Impairment and Alzheimer’s Disease Using Anatomical and Diffusion MRI.” In: Journal of Neuroimaging (2013). Accepted, .
  • (date unknown). Fletcher, PT, Venkatasubramanian, S, Joshi, S. The geometric median on Riemannian manifolds with application to robust atlas estimation, NeuroImage, Volume 45, Issue 1, Supplement 1, March 2009, pp. S143–S152. Accepted, .
  • (date unknown). Goodlett, CB, Fletcher, PT, Gilmore, JH, Gerig, G. Group analysis of DTI fiber tract statistics with application to neurodevelopment, NeuroImage, Volume 45, Issue 1, Supplement 1, March 2009, pp. S133–S142. Accepted, .
  • (date unknown). Fletcher, PT, Whitaker, RT, Tao, R, DuBray, MB, Froehlich, A, Ravichandran, C, Alexander, AL, Bigler, ED, Lange, N, Lainhart, JE, Microstructural Connectivity of the Arcuate Fasciculus in Adolescents with High-functioning Autism, in press NeuroImage, 2009. Accepted, .
  • (date unknown). Jurrus, E., Hardy, M., Tasdizen, T., Fletcher, P.T., Koshevoy, P., Chien, C.-B., Denk, W., Whitaker, R. Axon tracking in serial block-face scanning electron microscopy, Medical Image Analysis, Vol. 13, No. 1, pp. 180-188, 2008. Accepted, .
  • (date unknown). Foster, N.L., Wang, A.Y., Tasdizen, T., Fletcher, P.T., Hoffman, J.M., Koeppe, R.A. Realizing the potential of positron emission tomography with 18F-fluorodeoxyglucose to improve the treatment of Alzheimer's disease, Alzheimer's and Dementia, vol. 4, no. 1, suppl. 1, pp. S29-S36, 2008. Accepted, .

Presentations

  • BIRS Workshop on Geometry for Anatomy, Banff, Alberta, Invited Talk on "Geodesic Regression on Shape Manifolds", August, 2011. , Presented, 2011.
  • Dagstuhl Workshop on Innovations for Shape Analysis, Dagstuhl, Germany, Invited Talk on "Geodesic Regression on Shape Manifolds", April, 2011. , Presented, 2011.
  • Summer School on Manifold Learning in Image and Signal Analysis, Ven, Sweden, Invited lecture on “Statistics on Manifolds”. , Presented, 2009.
  • Massachusetts Institute of Technology, Computer Science and Artificial Intelligence Laboratory, Invited Talk on "Robust Statistics on Riemannian Manifolds". , Presented, 2009.
  • Department of Radiology, University of Pennsylvania, "Statistics of Anatomy for Multimodal Image Analysis", March 2008. , Presented, 2008.
  • Bioimaging Research Center, University of Georgia, "Statistics of Anatomy for Multimodal Image Analysis", March 2008. , Presented, 2008.
  • All-Hands Meeting, NIH Roadmap National Centers for Biomedical Computing (NCBC), "Statistics of Anatomy for Multimodal Image Analysis", August 2008. , Presented, 2008.
  • MICCAI Workshop on Computational Diffusion MRI, New York, NY, Invited talk on "Volumetric Segmentation and Tract-Based Statistics of White Matter Pathways", August 2008. , Presented, 2008.
  • Hausdorff Center for Mathematics, Bonn, Germany, Invited talk at the Workshop on Geometry and Statistics of Shapes, "Robust Statistics on Riemannian Manifolds via the Geometric Median", June 2008. , Presented, 2008.
  • Goodlett, C.B., Fletcher, P.T., Gilmore, J.H., Gerig, G. Group Statistics of DTI Fiber Bundles Using Spatial Functions of Tensor Measures. Medical Image Computing and Computer-Assisted Intervention (MICCAI), Springer-Verlag LNCS vol. 5241, pp. 1068-1075, 2008. , Other, 2008.
  • Cates, J., Fletcher, P.T., Warnock, Z., Whitaker, R. A shape analysis framework for small animal phenotyping with application to mice with a targeted disruption of HoxD11, IEEE International Symposium on Biomedical Imaging (ISBI), 2008. , Other, 2008.
  • Oguz, I., Cates, J., Fletcher, P.T., Whitaker, R., Cool, D., Aylward, S., Styner, M. Entropy-based particle systems and local features for cortical correspondence optimization, IEEE International Symposium on Biomedical Imaging (ISBI), 2008. , Other, 2008.
  • Fletcher, P.T., Venkatasubramanian, S., Joshi, S. Robust statistics on Riemannian manifolds via the geometric median, to appear IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2008. , Other, 2008.
  • Tao, R., Fletcher, P.T., Whitaker, R. A Framework for Joint Analysis of Structural and Diffusion MRI, MICCAI Workshop on Computational Diffusion MRI (CDMRI), 2008. , Other, 2008.
  • Cates, J., Fletcher, P.T., Whitaker, R. A hypothesis testing framework for high-dimensional shape models. MICCAI Workshop on Mathematical Foundations of Computational Anatomy (MFCA), 2008. , Other, 2008.
  • Cates, J., Fletcher, P.T., Styner, M., Hazlett, H., Whitaker, R.T. Particle-Based Shape Analysis of Multi-Object Complexes, In Proceedings of the 11th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI '08), pp. 477-485, 2008. , Other, 2008.
  • Fletcher, PT, Hao, X, Zygmunt, K, DuBray, MB, Froelich, A, Lange, N, Lainhart JE. Longitudinal Analysis of the White Matter Microstructure of the Arcuate Fasciculus in Autism, International Meeting for Autism Research (IMFAR), 2011. Other, Presented, 2011.
  • P. Thomas Fletcher, John Moeller, Jeff Phillips and Suresh Venkatasubramanian, Computing Hulls in Positive Definite Space, 19th Fall Workshop on Computational Geometry. , Presented, 2009.