F. Sheikhzadeh, R. Tam, and G. Hamarneh. Spatial dispersion of lesions as a surrogate biomarker for disability in multiple sclerosis. In Proceedings of the IEEE Computer Society Workshop on Mathematical Methods in Biomedical Image Analysis (MMBIA), 2012. Accepted.

C. McIntosh, G. Hamarneh, M. Toom, and R. Tam. Spinal cord segmentation for volume estimation in healthy and multiple sclerosis subjects using crawlers and minimal paths. In Proceedings of IEEE Conference on Healthcare Informatics, Imaging, and Systems Biology (HISB), pages 25-31, 2011. [ .pdf ]

R. Tam, A. Traboulsee, A. Riddehough, F. Sheikhzadeh, and D.K.B. Li. The impact of intensity variations in T1-hypointense lesions on clinical correlations in multiple sclerosis. Multiple Sclerosis Journal, 17(8):947-955, 2011. [ http ]

N. Changizi, G. Hamarneh, O. Ishaq, A. Ward, and R. Tam. Extraction of the plane of minimal cross-sectional area of the corpus callosum using template-driven segmentation. In Proceedings of Medical Image Computing and Computer Assisted Intervention (MICCAI) Part III, pages 17-24, 2010. [ .pdf ]

A. Huang, R. Abugharbieh, and R. Tam. A novel rotationally-invariant hidden Markov model for efficient 3D image segmentation. IEEE Transactions on Image Processing, 19(10):2737-2748, 2010. [ .pdf ]

J. McAusland*, R. Tam*, E. Wong, A. Riddehough, and D.K.B. Li. Optimizing the use of radiologist seed points for improved multiple sclerosis lesion segmentation. IEEE Transactions on Biomedical Engineering, 57(11):2689-2698, 2010. *Co-first authors. [ .pdf ]

T. Brosch and R. Tam. A self-optimizing histogram algorithm for graphics card accelerated image registration. In Proceedings of Medical Image Computing and Computer Assisted Intervention (MICCAI) Grid Workshop, pages 35-44, 2009. [ .pdf ]

A. Huang, R. Abugharbieh, and R. Tam. A fuzzy region-based hidden Markov model for partial-volume classification in brain MRI. In Proceedings of Medical Image Computing and Computer Assisted Intervention (MICCAI) Part II, pages 474-481, 2009. [ .pdf ]

A. Huang, R. Abugharbieh, and R. Tam. A hybrid geometric-statistical deformable model for automated 3D segmentation in brain MRI. IEEE Transactions on Biomedical Engineering, 56(7):1838-1848, 2009. [ .pdf ]

S. Meyers, C. Laule, S. Kolind, R. Tam, A. Traboulsee, Jimmy Lee, D.K.B. Li, and A. MacKay. Reproducibility and reliability of myelin water fraction analysis: a comparison of region of interest and voxel based analysis methods. Magnetic Resonance Imaging, 27:1096-1103, 2009. [ .pdf ]

R. Tam, A. Riddehough, and D.K.B. Li. Detection and measurement of coverage loss in interleaved multi-acquisition brain MRIs due to motion-induced inter-slice misalignment. Medical Image Analysis, 13:381-391, 2009. [ .pdf ]

A. Huang, R. Abugharbieh, and R. Tam. Image segmentation using an efficient rotationally invariant 3D region-based hidden Markov model. In Proceedings of the IEEE Computer Society Workshop on Mathematical Methods in Biomedical Image Analysis (MMBIA), 2008. [ .pdf ]

O. Ishaq, G. Hamarneh, R. Tam, and A. Traboulsee. Longitudinal, regional and deformation-specific corpus callosum shape analysis for multiple sclerosis. In Proceedings of the IEEE International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE EMBC), pages 2110-2113, 2007. [ .pdf ]

A. Huang, R. Abugharbieh, R. Tam, and A. Traboulsee. Brain extraction using geodesic active contours. In Proceedings of SPIE Medical Imaging, pages 61444J 1-8, 2006. [ .pdf ]

A. Huang, R. Abugharbieh, R. Tam, and A. Traboulsee. Automatic MRI brain tissue segmentation using a hybrid statistical and geometric model. In Proceedings of the IEEE International Symposium on Biomedical Imaging (IEEE ISBI), pages 394-397, 2006. [ .pdf ]

A. Huang, R. Abugharbieh, R. Tam, and A. Traboulsee. MRI brain extraction with combined expectation maximization and geodesic active contours. In Proceedings of the IEEE International Symposium on Signal Processing and Information Technology (IEEE ISSPIT), pages 107-111, 2006. [ .pdf ]

O. Ishaq, G. Hamarneh, R. Tam, and A. Traboulsee. Effects of mid-sagittal plane perturbation and image interpolation on corpus callosum area calculation. In Proceedings of the IEEE International Symposium on Signal Processing and Information Technology (IEEE ISSPIT), pages 197-202, 2006. [ .pdf ]

R. Tam and W. Heidrich. Computing polygonal surfaces from unions of balls. In Proceedings of Computer Graphics International, pages 86-92, 2004. [ .pdf ]

R. Tam and W. Heidrich. Shape simplification based on the medial axis transform. In Proceedings of IEEE Visualization, pages 481-488, 2003. [ .pdf ]

R. Tam and W. Heidrich. Feature-preserving medial axis noise removal. Lecture Notes in Computer Science (Proceedings of the European Conference on Computer Vision), 2351:672-686, 2002. [ .pdf ]

R. Tam and A. Fournier. Shape model and threshold extraction via shape gradients. In Proceedings of Vision, Modeling and Visualization, pages 481-489, 2001. [ .pdf ]

R. Tam and A. Fournier. Image interpolation using unions of spheres. The Visual Computer, 14(8/9):401-414, 1998. [ .pdf ]

R. Tam, C. Healey, B. Flak, and P. Cahoon. Volume rendering of abdominal aortic aneurysms. In Proceedings of IEEE Visualization, pages 43-50, 1997. [ .ps ]

R. Tam and S. Vuong. Practical considerations on asynchronous transfer mode performance. In Proceedings of 18th Biennial Symposium on Communications, pages 283-286, 1996.

F. Sheikhzadeh and R. Tam. Preliminary results on the clinical relevance of multiple sclerosis lesion distribution independent of lesion volume. In Proceedings of the International Society for Magnetic Resonance in Medicine (ISMRM) Scientific Meeting, 2011.

H. Tran, R. Tam, A. Traboulsee, and D.K.B. Li. Assessing the impact of image registration on texture analysis of MR images. In Proceedings of the International Society for Magnetic Resonance in Medicine (ISMRM) Scientific Meeting, 2009.

S. Meyers, C. Laule, S. Kolind, R. Tam, A. Traboulsee, Jimmy Lee, D.K.B. Li, and A. MacKay. Reproducibility and robustness of myelin water fraction analysis: a comparison of region of interest and pixel by pixel methods. In Proceedings of the International Society for Magnetic Resonance in Medicine (ISMRM) Scientific Meeting, 2008.

R. Tam, A. Riddehough, G. Zhao, A. Traboulsee, and D.K.B. Li. Detection and measurement of data loss due to MRI interleave positioning errors. In Proceedings of the International Society for Magnetic Resonance in Medicine (ISMRM) Scientific Meeting, 2007.

A. Huang, R. Abugharbieh, R. Tam, and A. Traboulsee. Automatic cortex extraction and grey/white matter segmentation from T1-weighted MRI with geodesic active contours. In Proceedings of the International Society for Magnetic Resonance in Medicine (ISMRM) Scientific Meeting, 2006.

A. Huang, R. Abugharbieh, R. Tam, and A. Traboulsee. Automatic brain extraction of T1-weighted MRI. In Proceedings of the American Roentgen Ray Society (ARRS) Annual Meeting, 2006.

O. Ishaq, G. Hamarneh, R. Tam, A. Traboulsee, and D.K.B. Li. Effects of mid-sagittal plane selection on corpus callosal area. Multiple Sclerosis (special supplementary issue of ECTRIMS 2006 oral presentations), 12(1):S173, 2006.

D.K.B. Li, G. Ebers, A. Traboulsee, R. Tam, D.S. Goodin, and A. Konieczny for the Betaseron/Betaferon LTF Study Group and the UBC MS/MRI Research Group. Interferon beta-1b 16-year long-term follow-up study: MRI outcomes. Multiple Sclerosis (special supplementary issue of ECTRIMS 2006 oral presentations), 12(1):S188-189, 2006. [ .pdf ]

P. Cahoon, R. Tam, and D. Forsey. Real time telemedicine using shared 3-dimensional workspaces over ATM. In Proceedings of the 11th Annual Canadian Internet Conference (Net '97), 1997.

R. Tam. Voronoi ball models for computational shape applications. PhD thesis, The University of British Columbia, 2004.

R. Tam. Efficient transfer and storage of image data for distributed development of biomedical imaging tools. Master's thesis, The University of British Columbia, 1997.