Publications

2017

Journal

  • H Lee, S Baek, S Y Chun, J H Lee, H J Cho, “Specific visualization of iron-clustered neuromelanin and tissue iron in the human post-mortem substantia nigra using MR relaxometry at 7T,” NeuroImage, in press, 2017.
  • Y K Dewaraja, S Y Chun, R N Srinivasa, R K Kaza, K C Cuneo, B S Majdalany, P M Novelli, M Ljungberg, J A Fessler, “Improved quantitative Y-90 bremsstrahlung SPECT reconstruction with Monte Carlo scatter modeling,” Medical Physics, in press, 2017.
  • M Kim, H Lee, H J Cho, S Y Chun, J H Shin, E J Kim, J W Ahn, G Y Huh, S Y Baek, J H Lee, “Pathologic Correlation of Paramagnetic White Matter Lesions in Adult-Onset Leukoencephalopathy With Axonal Spheroids and Pigmented Glia,” Journal of Neuropathology & Experimental Neurology 76(11):924-8, 2017.
  • M P Nguyen, S Y Chun, “Bounded Self-Weights Estimation Method for Non-Local Means Image Denoising using Minimax Estimators,” IEEE Transactions on Image Processing 26(4):1637-1649, Apr. 2017.

Conference

  • H Kim, M P Nguyen, S Y Chun, “Cancelable ECG Biometrics using GLRT and Performance Improvement using Guided Filter with Irreversible Guide Signal,” IEEE Engineering in Medicine and Biology Society (EMBC), pp. 454-7, Jul. 2017.
  • S Y Chun, “Spatial resolution properties of QSM images using MEDI algorithm,” International Society for Magnetic Resonance in Medicine (ISMRM), p. 1461, Apr. 2017.
  • H Lee, S Y Chun, J-H Lee, S-Y Baek, H J Cho, “Correlations of SWI, QSM, and R2* map with neuromelanin and iron distributions from post-mortem human substantia nigra samples,” International Society for Magnetic Resonance in Medicine (ISMRM), p. 3661, Apr. 2017.
  • H Lee, M Kim, H J Cho, S Y Chun, G Y Huh, E-J Kim, J-H Lee, “Susceptibility-related phase contrast associated with the alterations of myelo- architecture in adult-onset leukoencephalopathy with neuroaxonal spheroids and pigmented glia,” International Society for Magnetic Resonance in Medicine (ISMRM), p. 4162, Apr. 2017.
  • H Kim, S Y Chun, “Dynamic PET denoising using Robust PCA,” International Forum on Medical Imaging in Asia (IFMIA) pp. 150-1, 2017.
  • Q T Phan, S Y Chun, “Towards Good Features for Skin Cancer Classification,” International Forum on Medical Imaging in Asia (IFMIA) pp. 106-7, 2017.

Patent

  • H J Cho, H Lee, S Y Chun, J H Lee, “Specific visualization of neuromelanin-iron complex and ferric iron in the human post-mortem substantia nigra using MR relaxometry at 7T,” Korea Patent Pending, 2017.
  • S Y Chun, S P Kim, “User Authentication Information Based Guided Filtering Method for Single Pulse ECG User Authentication,” Korea Patent Pending, 2017.
  • S Y Chun, S P Kim, H Kim, “Construction Method of Irreversible Guide Signal from User Authentication Information for Guide Filtering,” Korea Patent Pending, 2017.

2016

Journal

  • J H Lee+, S Y Baek+, Y K Song, S Lim, H Lee, M P Nguyen, E J Kim, G Y Huh, S Y Chun#, H J Cho#, “The Neuromelanin-related T2* Contrast in Postmortem Human Substantia Nigra with 7T MRI,” Scientific Reports, 6, 32647, 2016. (+: Co-First Authors, #: Co-Corresponding Authors)
  • S Y Chun, “The Use of Anatomical Information for Molecular Image Reconstruction: Attenuation / Scatter Correction, Motion Compensation, and Noise Reduction,” Nucl Med Mol Imaging, 50(1):13-23, Feb 2016. (Invited Paper).

Conference

  • S Y Chun, “Small Scale Single Pulse ECG-based Authentication using GLRT that Considers T Wave Shift and Adaptive Template Update with Prior Information,” IAPR International Conference on Pattern Recognition (ICPR), pp. 3038-43, 2016.
  • S Y Chun, J-H Kang, H Kim, C Lee, I Oakley, S-P Kim, “ECG based User Authentication for Wearable Devices using Short Time Fourier Transform,” IEEE International Conference on Telecommunications and Signal Processing, pp. 656-9, 2016.
  • S Y Chun, “Single Pulse ECG-based Small Scale User Authentication using Guided Filtering,” IAPR International Conference on Biometrics (ICB), pp. 1-7, 2016. (oral presentation, acceptance rate 34.4%)
  • H Kim, S Y Chun,“ECG-based User Authentication using Time-Varying Power Spectral Density and Auto Regressive Model,” Korean Society of Medical & Biological Engineering Spring Conference, May 2016.
  • M P Nguyen, S Y Chun, “Center Pixel Weight Estimation for Non-Local Means Filtering using Local James-Stein Estimator with Bounded Self-Weights,” IEEE International Symposium on Biomedical Imaging (ISBI), pp. 82-85, 2016.
  • S Y Chun, K Y Kim, J S Lee, J A Fessler, “Joint Estimation of Activity Distribution and Attenuation Map for TOF-PET using Alternating Direction Method of Multiplier,” IEEE International Symposium on Biomedical Imaging (ISBI), pp. 86-89, 2016.
  • J H Lee, S Y Baek, Y K Song, S Lim, H Lee, M P Nguyen, E J Kim, G Y Huh, S Y Chun, H J Cho, “Comparison Study between T2*, Quantitative Susceptibility Mapping, and Histology for Postmortem Human Substantia Nigra,” International Society for Magnetic Resonance in Medicine (ISMRM), Apr 2016.
  • H Kim, M P Nguyen, S Y Chun, “ECG-Authentication using B-spline Signal Model,” HCI Korea, Jan 2016.

2015

Conference

  • K Shin, H Kim, S Y Chun, D H Shin, “Wi-Fi and Super Wi-Fi Co-location for Exploiting Spectrum Heterogeneity,” Proc. International Conference on Information and Communications Technology Convergence (ICTC), pp. 674-679, 2015. (Invited Paper)
  • M P Nguyen, H Kim, S Y Chun, J A Fessler, Y K Dewaraja, “Joint Spectral Image Reconstruction for Y-90 SPECT with Multi-Window Acquisition,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), pp. 1-4, Nov. 2015.
  • S Y Chun, “Iterative Guided Image Filtering for Multimodal Medical Imaging,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), pp. 1-4, Nov. 2015.
  • D Hwang, K Y Kim, H J An, S Y Chun, J S Lee, “Evaluation of Non-Local Means Filters for Resolution Recovery Reconstruction,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC) Abstract, Nov 2015.
  • S Y Chun, “Importance of Image Registration for Quantitative SPECT Imaging,” IEEE International Symposium on Biomedical Imaging (ISBI) Abstract,, Apr 2015.
  • M P Nguyen, S Y Chun, “A New Non-Local Means Filter with CT Side Information for SPECT,” IEEE International Symposium on Biomedical Imaging (ISBI) Abstract, Apr 2015.

2014

Journal

  • S Y Chun, Y K Dewaraja, J A Fessler, “Alternating direction method of multiplier for tomography with non-local regularizers,” IEEE Transactions on Medical Imaging,  33(10):1960-8, Oct. 2014.
  • M M Goodsitt, A Shenoy, J Shen, D Howard, M J Schipper, S Wilderman, E Christodoulou, S Y Chun, Y K Dewaraja, “Evaluation of dual energy quantitative CT for determining the spatial distributions of red marrow and bone for dosimetry in internal emitter radiation therapy,” Medical Physics, 41(5):051901:1-12, May 2014.

Conference

  • J Zheng, S Y Chun, J A Fessler, Y K Dewaraja, “Optimization and application of non-local means (NLM) filtering of SPECT/CT,” Journal of Nuclear Medicine Meeting Abstracts, 55:542, May 2014.

2013

Journal

  • J Ouyang, S Y Chun, Y Petibon, A A Bonab, N Alpert, G El Fakhri, “Bias atlases for segmentation-based PET attenuation correction using PET-CT and MR,” IEEE Transactions on Nuclear Science, 60(5):3373-82, Oct. 2013.
  • S Y Chun, J A Fessler, Y K Dewaraja, “Post-reconstruction non-local means filtering methods using CT side information for quantitative SPECT,” Physics in Medicine and Biology, 58(17):6225-40, Sep. 2013.
  • Y Petibon, J Ouyang, X Zhu, C Huang, T G Reese, S Y Chun, Q Li, G El Fakhri, “Cardiac motion compensation and resolution modeling in simultaneous PET-MR: a cardiac lesion detection study,” Physics in Medicine and Biology, 58(7): 2085-2102, Mar. 2013.
  • S Y Chun, J A Fessler, Y K Dewaraja, “Correction for collimator-detector response in SPECT using point spread function template,” IEEE Transactions on Medical Imaging, 32(2):295-305, Feb. 2013.
  • S Y Chun, J A Fessler, “Noise properties of tomographic motion-compensated image reconstruction methods,” IEEE Transactions on Medical Imaging, 32(2):141-52, Feb. 2013.

Conference

  • S Y Chun, Y K Dewaraja, “Investigation on Parameter Selection of Non-Local Means Filters Using CT Side Information for Multiple I-131 SPECT Scans,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), pp. 1-4, Nov. 2013.
  • K Y Kim, S Y Chun, J S Lee, “Separable Footprint Method for Fully 3D PET Reconstruction with SIMD and SIMT,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC) Abstract, Nov. 2013.
  • S Y Chun, Y K Dewaraja, J A Fessler, “Alternating direction method of multiplier for emission tomography with non-local regularizers,” International Meeting on Fully 3D Image Recon- struction in Radiology and Nuclear Medicine (Fully3D), pp. 62-5, Jun. 2013.

2004-2012

Journal

  • S Y Chun, T Reese, J Ouyang, B Guerin, C Catana, X Zhu, N Alpert, G El Fakhri, “MRI-based nonrigid motion correction in simultaneous PET/MRI,” Journal of Nuclear Medicine, 53(8):1284-1291, Aug. 2012. (Cover Article)
  • S Y Chun, J A Fessler, “Spatial resolution properties of tomographic motion-compensated image reconstruction methods,” IEEE Transactions on Medical Imaging, 31(7):1413-25, July 2012.
  • B Guerin, S Cho, S Y Chun, X Zhu, N M Alpert, G El Fakhri, T Reese, C Catana, “Nonrigid PET motion compensation in the lower abdomen using simultaneous tagged-MRI and PET imaging,” Medical Physics, 38(6):3025-3038, June 2011.
  • S Y Chun, J A Fessler, “A simple regularizer for B-spline nonrigid image registration that encourages local invertibility,” IEEE Journal of Selected Topics in Signal Processing, 3(1):159-69, Feb. 2009.

Book Chapter

  • J E Huggins, B Graimann, S Y Chun , J A Fessler, S P Levine, “Electrocorticogram as a brain computer interface signal source,” Towards Brain-Computer Interfacing, G Dornhege, JdR Millan, T Hinterberger and D McFarland, KR Meuller, editor. MIT Press, Cambridge, pp. 129-46, Sep. 2007.

Conference

  • S Y Chun, J A Fessler, Y K Dewaraja, “Non-local means methods using CT side information for I-131 SPECT image reconstruction,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC), pp. 3362-6, 2012.
  • S Y Chun, J A Fessler, “Fast variance image predictions for motion-compensated image reconstruction,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC) Abstract, Nov 2012.
  • Y K Dewaraja, P Roberson, N Clinthorne, S Y Chun, J A Fessler, MLjungberg, “Quantitative Bremsstrahlung SPECT/CT image reconstruction with patient specific Monte Carlo scatter compensation for Y-90 micro-sphere radioembolization (RE),” Journal of Nuclear Medicine Meeting Abstracts, 53:444, May 2012.
  • S Y Chun, J A Fessler, Y K Dewaraja, “Correction for collimator-detector response (CDR) in quantitative SPECT using point spread function (PSF) template approach,” Journal of Nuclear Medicine Meeting Abstracts, 53:2365, May 2012.
  • J Ouyang, S Y Chun, T Reese, C Catana, E Moussallem, N M Alpert, G El Fakhri, “Effect of MR-based non-rigid motion correction on lesion detection in simultaneous PET-MR,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC) Abstract, 2011.
  • S Y Chun, E Moussallem, T Reese, B Guerin, C Catana, N M Alpert, and G El Fakhri, “In-vivo studies of tagged MR based PET motion correction in simultaneous PET-MR,” Journal of Nuclear Medicine Meeting Abstracts, 52:261, May 2011.
  • J Ouyang, S Y Chun, and G El Fakhri, “MR-based attenuation correction for whole-body PET-MR,” Journal of Nuclear Medicine Meeting Abstracts, 52:260, May 2011.
  • S Chun, T G Reese, B Guerin, C Catana, G El Fakhri, “In-vivo tagged MR-based motion correction in combined MR-PET,” International Society for Magnetic Resonance in Medicine (ISMRM), p. 2674, 2011.
  • S Y Chun, J A Fessler, “Regularization design for isotropic spatial resolution in motion-compensated image reconstruction,” IEEE International Symposium on Biomedical Imaging (ISBI), pp. 1500-3, 2011.
  • S Y Chun, T Reese, B Guerin, X Zhu, C Catana, G El Fakhri, “Tagged MR based Respiratory Motion Correction in simultaneous PET-MR,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC) PET-MR Workshop, 2010.
  • S Y Chun, T Reese, B Guerin, X Zhu, C Catana, G El Fakhri, “Improved lesion detection with B-spline nonrigid motion correction in simultaneous PET-MR,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC) Abstract, 2010. (MIC Trainee Award)
  • J Ouyang, S Y Chun, C Catana, T Benner, G El Fakhri, “MR-based attenuation correction using clinical whole-body MR and PET/CT,” IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC) Abstract, 2010.
  • S Y Chun, T Reese, B Guerin, X Zhu, S Cho, J Ouyang, C Catana, G El Fakhri, “4D tagged MR-based motion correction in simultaneous PET-MR,” Journal of Nuclear Medicine Meeting Abstracts, 51:80, May 2010. (Society of Nuclear Medicine Computer and Instrumentation Young Investigator Award, 2nd place, Covidien Travel Award)
  • S Y Chun, B Guerin, S Cho, T Reese, X Zhu, J Ouyang, C Catana, G El Fakhri, “Assessment of motion correction strategies in simultaneous PET-MR,” Journal of Nuclear Medicine Meeting Abstracts, 51:359, May 2010. (Covidien Travel Award)
  • J Ouyang, S Y Chun, G El Fakhri, “MR-based Attenuation Correction for Whole-body PET/MR,” J. Nucl. Med. Meeting Abstracts 51:1381, 2010.
  • S Chun, S Cho, T G Reese, B Guerin, X Zhu, J Ouyang, C Catana, G El Fakhri, “Compensation for nonrigid motion using B-spline image registration in simultaneous MR-PET,” International Society for Magnetic Resonance in Medicine (ISMRM), p. 3052, 2010.
  • T G Reese, B Guerin, S Cho, S Y Chun, J Ouyang, X Zhu, C Catana, G El Fakhri, “Respiratory Motion Correction of PET using Simultaneously Acquired Tagged MRI,” International Society for Magnetic Resonance in Medicine (ISMRM), p. 3053, 2010.
  • S Y Chun, C Schretter, J A Fessler, “Sufficient condition for local invertibility of spatio-temporal 4D B-spline deformations,” IEEE International Symposium on Biomedical Imaging (ISBI), pp. 1221-4, 2010.
  • S Y Chun, J A Fessler, “Spatial resolution and noise properties of regularized motion-compensated image reconstruction,” IEEE International Symposium on Biomedical Imaging (ISBI), pp. 863-6, 2009. (Student Travel Grant)
  • S Y Chun, J A Fessler, M L Kessler, “A simple penalty that encourages local invertibility and considers sliding effects for respiratory motion,” SPIE Medical Imaging: Image Processing, p. 72592U, 2009.
  • S Y Chun, J A Fessler, “Joint image reconstruction and nonrigid motion estimation with a simple penalty that encourages local invertibility,” SPIE Medical Imaging: Physics of Medical Imaging, p. 72580U, 2009.
  • S Y Chun, J A Fessler, “Regularized Methods for Topology-preserving Smooth Nonrigid Image Registration Using B-Spline Basis,” IEEE International Symposium on Biomedical Imaging (ISBI), pp. 1099-1102, 2008. (Student Travel Grant)
  • Jane E Huggins, Simon P Levine, Victor Solo, J A Fessler, D M Minecan, S Y Chun, Robert C Welsh, R K Kushwaha, Spencer L BeMent, “2005 progress on a direct brain interface based on detection of ERPs in ECoG,” NIH Neural Interfaces Workshop, p. 45, 2005.
  • J E Huggins, S P Levine, V Solo, J A Fessler, D M Minecan, S Y Chun, R K Kushwaha, S L BeMent, O Sagher, L A Schuh, B J Smith, K V Elisevich, G Pfurtscheller, B Graimann, “University of Michigan Direct Brain Interface: 2005 Update,” Brain-Computer Interface Technology Abstracts, p. 27-8, Jun. 2005.
  • S Y Chun, Jane E Huggins, J A Fessler, Victor Solo, Simon P Levine, “Detection of events in electrocorticogram using a quadratic detector based on a two covariance model,” Brain-Computer Interface Technology Abstracts, p. 82, Jun. 2005.
  • J A Fessler, S Y Chun, J E Huggins, S P Levine, “Detection of Event-Related Spectral Changes in Electrocorticograms,” IEEE EMBS Conference on Neural Engineering, p.269-272, Mar. 2005.
  • J A Fessler, S Y Chun, J E Huggins, S P Levine, “Model-based detection of event-related signals in electrocorticograms,” Neural Information Processing Systems (NIPS) Workshop on Towards Brain-Computer Interfacing, 2004.
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