* Cardiovascular Imaging Laboratory *
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Physician Photo
Nikolaos Tsekos, Ph.D.
Assistant Professor of Radiology and Biomedical Engineering
Office: East Building 1308
Tel: 314.747.3873
Fax: 314.747.3882
tsekosn@mir.wustl.edu
 
Dept of Radiology
Washington University
Campus Box 8225
510 S. Kinshighway Blvd
St. Louis, MO 63130

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Peer Reviewed Manuscripts
  • Y. K. Cho, H. Merkle, J.Zhang, N.V. Tsekos, R. J Bache, K. Ugurbil. Noninvasive measurements of transmural myocardial metabolites using 3-D (31)P NMR spectroscopy. Am J Physiol Heart Circ Physiol 280, H489-97 (2001)
  • N.V. Tsekos, J. Shudy, E. Yacoub, P.V. Tsekos and I. Koutlas. Development of a robotic device for MRI-guided stereotactic interventions in the breast. Bioinformatics and Bioengineering Conference, Proceedings of the IEEE 2nd International Symposium, p. 201-208, Washington DC, 2001
  • N.V. Tsekos, M. Garwood, K. Ugurbil. Tagging of the Magnetization with the Transition Zones of 360o rotations generated by a tandem of two adiabatic DANTE inversion sequences, Journal of Magnetic Resonance, 156, 187-194, (2002)
  • N. V. Tsekos, P.K. Woodard, G.J. Foster, T.L. Sharp, R.J. Gropler. Dynamic coronary MR angiography and first pass with intracoronary administration of contrast agent. J. of Magnetic Resonance Imaging, 16, 311-319 (2002).
  • B. T. Larson, N. V. Tsekos, A.G. Erdman, E. Yacoub, P.V. Tsekos, I.G. Koutlas. Design of an MRI-Compatible Robotic Stereotactic Device for Minimally Invasive Interventions in the Breast. (Mechanisms and Robotics Conference of ASME 2002 Design Engineering Technical Conferences Montreal Canada, 2002
  • Lewis, S. M, Jerde, T. A.,Tzagarakis, C., Georgopoulos, M. A., Tsekos, N., Amirikian, B., Kim, S. G., Ugurbil, K., Georgopoulos, A. P. Cerebellar activation during copying geometrical shapes. J Neurophysiol 90, 3874-87, 2003.
  • Dawei Gui and Nikolaos V. Tsekos "Structure-Targeting Fast Magnetic Resonance Imaging Angiography with Partial Collection of the Inverse Space (k-Space) based on the Orientation of the Vessel in Real Space" Proceedings of the IEEE Symposium in Bioinformatics and Bioengineering, p. 122-125, Washington DC, 2003
  • Blake T. Larson, Nikolaos V. Tsekos, Arthur G. Erdman "A Robotic Device For Minimally Invasive Breast Interventions With Real-Time MRI Guidance" Proceedings of the 3rd IEEE Symposium in Bioinformatics and Bioengineering, p. 190-197, Washington DC, 2003
  • Blake T. Larson, Arthur G. Erdman, Nikolaos V. Tsekos, Essa Yacoub, Panagiotis V. Tsekos, and Ioannis G. Koutlas "Design of an MRI-Compatible Robotic Stereotactic Device for Minimally Invasive Interventions in the Breast", Journal of Biomechanical Engineering 126 , 458-465, 2004.
  • Tsekos, N. V., Atalar, E, Li, D., Omary, R. A., Serfaty, J. M., Woodard, P. K. “Magnetic resonance imaging-guided coronary interventions” J Magn Reson Imaging 19, 734-49, 2004
  • Blake T. Larson, Nikolaos V. Tsekos, Arthur G. Erdman “An MRI Compatible Probe Exchanger for Early Diagnosis and Treatment of Breast Cancer” DETC2004-57047, ASME, Salt Lake City, Utah, 2004
  • Lewis, S. M, Jerde, T. A., Tzagarakis, C., Gourtzelidis, P., Georgopoulos, M. A., Tsekos, N., Amirikian, B., Kim, S. G., Ugurbil, K., Georgopoulos, A. P. Logarithmic transformation for high-field BOLD fMRI data. Exp Brain Res 165, 447-53, 2005.
  • Tsekos, N.V., Ozcan A, Christoforou, E. A Prototype Manipulator for MR-guided Interventions Inside Standard Cylindrical MRI Scanners J. Biomechanical Engineering 127, 972-980, 2005
  • Gui D, and Tsekos, N.V. "Fast Magnetization Driven Preparation for Imaging of Contrast Enhanced Coronary Arteries During Intra-arterial Injection of Contrast Agent" J Magn Reson Imag 24, 1151-1158, 2006
  • Gui D, and Tsekos, N.V. "Dynamic Imaging of Contrast Enhanced Coronary Vessels with Rotated Stripe Keyhole Acquisition" J Magn Reson Imag (In Press 2006)
  • Christoforou, E., Akbudak, E., Ozcan, A., Karanikolas, M., Tsekos, N.V.,. Performance of Interventions with Manipulator-driven Real-time MR-Guidance: Implementation and Initial in Vitro Tests. Magnetic Resonance Imaging, (In press 2006)
  • Christoforou, E., Tsekos, N.V., Ozcan A. Design and Testing of a Robotic System for MR Image Guided Interventions.J of Intelligent & Robotic Systems, Volume 47, Number 2, p. 175-196, 2006
  • Christoforou, E. Ozcan, A. and Nikolaos V. Tsekos Robotic Arm for Magnetic Resonance Imaging Guided Intervention Accepted BioRob 2006 IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics , 2006 IEEE/RAS IEEE: Robotics and Automation Society & EMBS: Engineering in Medicine and Biology Society, p. 911-916, (Pisa, Italy, 2006).
  • Christoforou, E. Ozcan, A. and Nikolaos V. Tsekos Manipulator for Magnetic Resonance Imaging Guided Interventions: Design, Prototype and Feasibility. Proceedings of the 2006 IEEE International Conference on Robotics and Automation (ICRA). p. 3838-3843, (Orlando, Florida 2006).
  • Christoforou, E. and Nikolaos V. Tsekos Robotic manipulators with remotely-actuated joints. Proceedings of the 2006 IEEE International Conference on Robotics and Automation (ICRA). p. 2866-2871, (Orlando, Florida 2006).
  • A. Ozcan, E. Christoforou, D. Brown, and N. V. Tsekos, "Fast and Efficient Radiological Interventions via a Graphical User Interface Commanded Magnetic Resonance Compatible Robotic Device," Proceedings of the 28th IEEE EMBS Annual International Conference, p. 1762-1677 (New York City, USA, 2006)
  • Karanikolas, M., Christoforou, E., Akbudak, E., Eisenbeis, P.E., Tsekos, N.V. An Archetype for MRI guided Tele-interventions. IFIP International Federation for Information Processing, Volume 204, Artificial Intelligence Applications and Innovations, Eds. Maglogiannis, I., Karpouzis, K., Bramer, M. (Boston Springer) p. 476-483, 2006
  • Tsekos, N.V., Khanicheh, A., Christoforou, E., Mavroidis, C., Magnetic Resonance Compatible Robotic and Mechatronics Systems for Image Guided Interventions and Rehabilitation: A Review Study. Invited to Annual Reviews of Biomedical Engineering, Vol. 9. 2007
  • Tsekos, N.V., Christoforou, E., Ozcan A. "A General-Purpose Robotic System for MR guided Procedures: Implementation and Image Guidance" Invited to the IEEE-EMB Engineering in Medicine and Biology Magazine Special Issue on MR-Compatible Robotics (1/2007)
Conference Abstracts
(SMR = Society of Magnetic Resonance; ESMRMB = European Society for Magnetic Resonance in Medicine and Biology; ISMRM = International Society for Magnetic Resonance in Medicine; AHA = American heart Association; RSNA= Radiological Society of North America)
  • N. V. Tsekos, G.J. Foster, T.L. Sharp, J.A. Engelbach, P.K. Woodard, R.J. Gropler, Magnetic Resonance Coronary Angiography and Myocardial Blood Flow with Intracoronary Administration of Contrast Agents. (American Heart Association) Circulation 2000; 102 (S): 2230
  • PK Woodard, J Zheng, D Abendschein, R Kowalski, N Fatouraee, NV Tsekos, A Amini, RJ Gropler. MR Detection of Coronary Artery Stenosis-Associated Flow Disturbance. Proceedings of the Society of Cardiovascular Magnetic Resonance, 2001.
  • J. Zheng, P.K. Woodard, D.R. Abendschein, F.M. Cavagna, N.V. Tsekos, R.J. Gropler. Ex vivo MR contrast-enhanced cardiac imaging in a stenosis animal model: Comparison between 1.5T and 3T. Proc. 8th Inter. Soc. of Magnetic Resonance in Medicine, 2001, p. 179.
  • N.V. Tsekos, P. Woodard, G. Foster, T. Sharp, R.J. Gropler. Toward comprehensive performance of MR-guided vascular interventions: combined dynamic imaging of the coronary arteries and assessment of myocardial perfusion. Proc. 8th Inter. Soc. of Magnetic Resonance in Medicine, 2001
  • Y. Gao, E. Akbudak, N.V. Tsekos. Magnetization driven preparation scheme for selective enhancement of short T1 species suitable for fast imaging of contrast enhanced tissue. Proc. 8th Inter. Soc. of Magnetic Resonance in Medicine, 2001
  • E. Karp, N.V. Tsekos, P. Goodard, Y. Gao, and R.J. Gropler. Contrast enhancement at long duration and multiple coronary MR angiography sessions with intracoronary infusion of Gd-DTPA. Proc. 8th Inter. Soc. of Magnetic Resonance in Medicine, 2001
  • E. Yacoub, B.T. Larson, P.V. Tsekos, I.G. Koutlas, A.G. Erdman and N.V. Tsekos. Robotic Device for MR-Guided Interventions in the Breast. Proceedings of the 10th International Society for Magnetic Resonance in Medicine, 339, Honolulu, 2002.
  • Y. Gao, R.J. Gropler, N.V. Tsekos Study of the SNR and Localization properties of Chemical Shift Imaging k-space Acquisition Schemes. Proceedings of the 10th International Society for Magnetic Resonance in Medicine, 2430, Honolulu, 2002.
  • P.K. Woodard, J. Zheng, N.V. Tsekos, J.P. Lasala, R.T. Constable, R.J. Gropler, Dynamic Contrast-enhanced MRA Technique is Necessary to Accurately Image Occluded Coronary Arteries with Collateral Reconstitution. Proceedings of the 10th International Society for Magnetic Resonance in Medicine, 1593, Honolulu, 2002.
  • J. Zheng, D. Yablonsky, M. Nolte, D. Li, P.K. Woodard, N.V. Tsekos, R.J. Gropler. Assessment of myocardial oxygen extraction fraction: Initial experience. Proceedings of the 10th International Society for Magnetic Resonance in Medicine, 778, Honolulu, 2002.
  • Dawei Gui, Nikolaos V. Tsekos, Robert J. Gropler "Directional Selective k-Space Acquisition ("DISKA") a technique for selectively imaging targeted segments or branches of a contrast enhanced vessel" Proceedings of the 11th Scientific Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine, Toronto, Canada, 2003
  • Dawei Gui, Nikolaos V. Tsekos, “Dual-Projection Sequence for Fast Volumetric Imaging of Contrast Enhanced Tubular Structures”, Accepted for Presentation to the 13th Scientific Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine, Miami, 2005
  • Dawei Gui, Alpay Ozcan, Jie Zheng, Christine O. Menias, and Nikolaos V. Tsekos “Dynamic Volumetric Imaging of an Area of Interest with Interleaved Acquisition of Intra-Oblique Slices” Accepted for Presentation to the 13th Scientific Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine, Miami, 2005
  • Eftychios Christoforou, Alpay Ozcan, and Nikolaos V. Tsekos “A Remotely Controlled Device for Real-time MR-Guided Interventions Inside Cylindrical MR Scanners” Accepted for Presentation to the 13th Scientific Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine, Miami, 2005
  • Eftychios Christoforou, Angel Lee, and Nikolaos V. Tsekos “Implementation of Real-time Safety Control for Image-guided Procedures Inside Cylindrical Scanners with MR-Compatible Manipulators” 14th Scientific Meeting ISMRM, Seattle, Washington, p. 1442, Seattle, Washington, 2006
  • Erbil Akbudak, Sven Zuehlsdorff, Eftychios Christoforou, Alpay Ozcan, Menelaos Karanikolas Nikolaos V. Tsekos Freehand Performance of Interventions with Manipulator-Driven Real-Time Update of the Imaging Plane, 14th Scientific Meeting ISMRM, p. 1443, Seattle, Washington, 2006
  • N. G. Katsantonis, M. D. Athanasopoulou, and N. V. Tsekos. Dynamic Coronary MRA During Localized Intra-arterial Infusion of the Intravascular Agent Gadomer, Accepted for Oral Presentation at the Joint Annual Meeting ISMRM-ESMRMB, Berlin, Germany, 2007.
  • Christoforos Nikou, Nikolas G. Galatsanos and Nikolaos V. Tsekos. Spatial Segmentation Based on the Signal Time Activity of Dynamic Cardiac Images During Intracoronary Infusion of Gd Contrast Agent. Accepted for e-poster Presentation at the Joint Annual Meeting ISMRM-ESMRMB, Berlin, Germany, 2007.
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