Person

FH-Prof. DI Dr. Robert Merwa

Image processing, Magnetic resonance techniques, Computer based simulation, Signal processing

Education

Technische Universität Graz, Medizintechnik, Dr.techn.
Jun 2000 - Apr 2004
Technische Universität Graz, Telematik, Dipl.-Ing.
Oct 1990 - Jun 2000

Professional career & activities

Graz University of Technology, member of study commission
Jan 2006 - Jan 2009
Graz University of Technology, Assistant Professor, Teaching activities; Research in the field of Magnetic Induction-Tomography an Magnetic-Resonance techniques
Sep 2003 - Aug 2009
Dpecial Research Area, SFB F 315, Research Assistant, Teaching activities; Research in the field of Magnetic Induction-Tomography
Mar 2001 - Oct 2004
Special Research Area, SFB P14990, Research Assistent, Teaching activities at the Graz University of Technology; Research in the field of Magnetic Induction-Tomography
Nov 2001 - Aug 2003
Graz University of Technology, Assistant Professor, Teaching activities; Research in the field of Electrical Impedance-Tomography
Jul 2000 - Feb 2001

Research interests

  • Computer based simulation
  • Image processing
  • Magnetic resonance techniques
  • Signal processing
2014
H. Egger, T. Haslwanter, R. Merwa - Thought control of machines - Modern Technologies for Disabled People - Thought control of machines - Modern Technologies for disabled people, Linz, Austria, 2014, pp. 118-121 more
2013
G. Reishofer, C. Langkammer, K. Koschutnig, M. Jehna, R. Merwa, F. Ebner - Tractography from regularized high resolution RS-EPI diffusion weighted imaging - Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2013, Salt Lake City, United States of America, 2013, pp. 1542 more
2012
G. Reishofer, R. Merwa, F. Ebner - Local Regularization of the Diffusion Tensor by Means of Independent Component Ananlysis and Total Variation - Application to High Resolution DTI - Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2012, Melbourne, Australia, 2012 more
2012
R. Merwa, G. Reishofer - An Automatic Computation Tool for the Estimation of B1-Corrected Pharmacokinetic Parameters - Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2012, Melbourne, Australia, 2012 more
2010
R. Merwa, G. Reishofer, T. Feiweier, K. Kapp, F. Ebner, R. Stollberger - Improvement of the Arterial Input Function considering B1-Inhomogeneities - Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2010, Stockholm, Sweden, 2010 more
2010
R. Merwa, G. Reishofer, T. Feiweier, K. Kapp, F. Ebner, R. Stollberger - Impact of B1-Inhomogeneities on the Quantification of Ktrans and Ve - Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2010, Stockholm, Sweden, 2010 more
2010
R. Merwa, G. Reishofer, T. Feiweier, K. Kapp, F. Ebner, R. Stollberger - Correction of the kinetic parameters of human tissue considering RF-field inhomogeneities - Proceedings of the Joint Annual Meeting ISMRM-ESMRMB 2010, Stockholm, Sweden, 2010 more
2009
R. Merwa, G. Reishofer, T. Feiweier, K. Kapp, F. Ebner, R. Stollberger - Improved quantification of pharmacokinetic parameters at 3 Tesla considering B1 inhomogeneities - Proceedings of the ISMRM 17th Scientific Meeting & Exhibition, Honolulu, United States of America, 2009 more
2009
G. Reishofer, R. Merwa, M. Aschauer, R. Stollberger, F. Ebner - Reduction of Motion Artefacts in Renal Perfusion DCE-MRI Data - Proceedings of the ISMRM 17th Scientific Meeting & Exhibition, Honolulu, United States of America, 2009 more
2009
G. Reishofer, S. Keeling, R. Merwa, C. Enzinger, S. Ropele, R. Stollberger, F. Ebner - Automatic Macro-Vessel-Minimization using Independent Component Analysis and Local Scaling Functions - Proceedings of the ISMRM 17th Scientific Meeting & Exhibition, Honolulu, United States of America, 2009 more
2009
R. Merwa, G. Reishofer, T. Feiweier, K. Kapp, F. Ebner, R. Stollberger - Impact of B1 inhomogeneities on AIF selection in DCE-MRI at 3 Tesla - Proceedings of the ISMRM 17th Scientific Meeting & Exhibition, Honolulu, United States of America, 2009 more
2008
R. Merwa, F. Ebner, T. Feiweier, R. Stollberger - Impact of the Correction of B1 inhomogeneities for dynamic contrast-enhanced imaging at 3 Tesla - Proceedings of the ISMRM 16th Scientific Meeting & Exhibition, Toronto, Canada, 2008 more
2008
R. Merwa, F. Ebner, T. Feiweier, R. Stollberger - The impact of B1 inhomogeneities on quantitative dynamic contrast enhanced MRI - Proceedings of the ÖGMP Annual Meeting and 3rd AISCMP Meeting, Graz, Austria, 2008 more
2008
R. Merwa, H. Scharfetter - Magnetic induction tomography: comparison of the image quality using different types of receivers - PHYSIOLOGICAL MEASUREMENT, Vol. 29, No. 6, 2008, pp. 417-429 more
2007
R. Merwa - 13th International Conference on Electrical Bioimpedance and 8th Conference on Electrical Impedance Tomography 2007 - Springer Vieweg, 2007 more
2007
R. Merwa, H. Scharfetter - The influence of the coil configuration on the spatial resolution - Proceedings of the XIII International Conference on Electrical Bioimpedance & VIII Conference on Electrical Impedance Tomography, Graz, Austria, 2007 more
2007
R. Merwa, H. Scharfetter - A feasibility study of brain oedema detection using a finite element human head model - Proceedings of the XIII International Conference on Electrical Bioimpedance & VIII Conference on Electrical Impedance Tomography, Graz, Austria, 2007 more
2007
R. Merwa, H. Scharfetter - Magnetic induction tomography: evaluation of the point spread function and analysis of resolution and image distortion - PHYSIOLOGICAL MEASUREMENT, Vol. 28, No. 7, 2007, pp. 313-324 more
2006
H. Scharfetter, K. Hollaus, J. Rosell, R. Merwa - Single-Step 3-D Image Reconstruction in Magnetic Induction Tomography: Theoretical Limits of Spatial Resolution and Contrast to Noise Ratio - ANNALS OF BIOMEDICAL ENGINEERING, Vol. 34, No. 11, 2006, pp. 1786-1798 more
2006
H. Scharfetter, P. Brunner, R. Merwa - Magnetische Induktionsomographie-Spektroskopie (MITS) - Haus der Technik, Vol. 99, No. 1, 2006, pp. 161-165 more
2006
R. Merwa, H. Scharfetter - Solution of the inverse problem of magnetic induction tomography (MIT) with multiple objects: analysis of detectability and statistical properties with respect to the reconstructed conducting region - PHYSIOLOGICAL MEASUREMENT, Vol. 27, No. 5, 2006, pp. 249-259 more
2006
J. Rosell, R. Merwa, P. Brunner, H. Scharfetter - A multifrequency magnetic induction tomography system using planar gradiometers: data collection and calibration - PHYSIOLOGICAL MEASUREMENT, Vol. 27, No. 5, 2006, pp. 271-280 more
2006
P. Brunner, R. Merwa, A. Missner, J. Rosell, K. Hollaus, H. Scharfetter - Reconstruction of the shape of conductivity spectra using differential multi-frequency magnetic induction tomography - PHYSIOLOGICAL MEASUREMENT, Vol. 27, No. 5, 2006, pp. 237-248 more
2006
H. Scharfetter, A. Missner, R. Merwa - Magnetic Induction Tomography: Iterative and Single-Step Solution of Image Reconstruction Problem in Low-Contrast Bodies - Proceedings of the World Congress on Medical Physics and Biomedical Engineering, Seoul, Republic of Korea, 2006 more
2006
M. Mayer, P. Brunner, R. Merwa, F. Smolle-Jüttner, A. Maier, H. Scharfetter - Direct reconstruction of tissue parameters from differential multifrequency EIT in vivo - PHYSIOLOGICAL MEASUREMENT, Vol. 27, No. 5, 2006, pp. 93-101 more
2006
H. Scharfetter, P. Brunner, R. Merwa - Magnetic Induction Tomography: Single-Step Solution of the 3-D Inverse Problem for Differential Image Reconstruction - International Journal of Information & System Science, Vol. 2, No. 4, 2006, pp. 585-606 more
2006
R. Merwa, H. Scharfetter - Magnetic Induction Tomography: analysis of resolution an object shifting - Proceedings of the World Congress on Medical Physics and Biomedical Engineering, Seoul, Republic of Korea, 2006 more
2005
R. Merwa, P. Brunner, A. Missner, J. Rosell, K. Hollaus, H. Scharfetter - Solution of the inverse problem of magnetic induction tomography (MIT) in silicio and in vitro - Scientific Abstracts of the VI Conference on Biomedical Applications of Electrical Impedance Tomography, London, United Kingdom of… more
2005
R. Merwa, K. Hollaus, P. Brunner, H. Scharfetter - Solution of the inverse problem of magnetic induction tomography (MIT) - PHYSIOLOGICAL MEASUREMENT, Vol. 26, No. 2, 2005, pp. 241-250 more
2005
H. Scharfetter, R. Merwa, K. Pilz - A new type of gradiometer for the receiving circuit of magnetic induction tomography (MIT) - PHYSIOLOGICAL MEASUREMENT, Vol. 26, No. 2, 2005, pp. 307-318 more
2005
M. Mayer, P. Brunner, R. Merwa, H. Scharfetter - Monitoring of lung edema using focused impedance spectroscopy: a feasibility study - PHYSIOLOGICAL MEASUREMENT, Vol. 26, No. 3, 2005, pp. 185-192 more
2005
P. Brunner, R. Merwa, A. Missner, J. Rosell, K. Hollaus, H. Scharfetter - Reconstruction of the shape of conductivity spectra using differential multi-frequency MIT - Scientific Abstracts of the VI Conference on Biomedical Applications of Electrical Impedance Tomography, London, United Kingdom of Great… more
2005
M. Mayer, P. Brunner, R. Merwa, H. Scharfetter - Direct reconstruction of tissue parameters from differential multifrequency EIT in vivo - Scientific Abstracts of the VI Conference on Biomedical Applications of Electrical Impedance Tomography, London, United Kingdom of Great Britain and Northern Ireland,… more
2004
R. Merwa - Reconstruction of pathological structural changes in the human brain with magnetic induction tomography - Shaker Verlag, 2004 more
2004
H. Scharfetter, R. Merwa, K. Pilz - A new type of gradiometer for the receiving circuit of Magnetic Induction Tomograpy (MIT) - Proceedings of the XII International Conference on Electrical Bioimpedance & V Conference on Electrical Impedance Tomography, Gdansk, Poland, 2004 more
2004
K. Hollaus, C. Magele, R. Merwa, H. Scharfetter - Numerical Simulation of the Eddy Current Problem in Magnetic Induction Tomography for Biomedical Applications by Edge Elements - IEEE TRANSACTIONS ON MAGNETICS, Vol. 40, No. 2, 2004, pp. 623-626 more
2004
R. Casanas, H. Scharfetter, A. Altes, A. Remacha, P. Sarda, J. Sierra, R. Merwa, K. Hollaus, J. Rosell - Measurement of liver iron overload by magnetic induction using a planar gradiometer: preliminary human results - PHYSIOLOGICAL MEASUREMENT, Vol. 25, No. 1, 2004, pp. 315-323 more
2004
H. Scharfetter, S. Rauchenzauner, R. Merwa, O. Biro , K. Hollaus - Planar gradiometer for magnetic induction tomography (MIT): theoretical and experimental sensitivity maps for a low-contrast phantom - PHYSIOLOGICAL MEASUREMENT, Vol. 25, No. 1, 2004, pp. 325-333 more
2004
R. Merwa, K. Hollaus, O. Biro , H. Scharfetter - Detection of brain oedema using magnetic induction tomography: a feasibility study of the likely sensitivity and detectability - PHYSIOLOGICAL MEASUREMENT, Vol. 25, No. 1, 2004, pp. 347-354 more
2004
K. Hollaus, C. Magele, R. Merwa, H. Scharfetter - Fast calculation of the sensitivity matrix in magnetic induction tomography by tetrahedral edge finite elements and the reciprocity theorem - PHYSIOLOGICAL MEASUREMENT, Vol. 25, No. 1, 2004, pp. 159-168 more
2004
R. Merwa, K. Hollaus, H. Scharfetter - Solution of the Inverse Problem of Magnetic Induction Tomography (MIT) for Physiological Conductivities - Proceedings of the XII International Conference on Electrical Bioimpedance & V Conference on Electrical Impedance Tomography, Gdansk, Poland, 2004 more
2004
R. Merwa, K. Hollaus, H. Scharfetter - Magnetic Induction Tomography: A Method for Optimizing the Coil Configuration - Proceedings of the XII International Conference on Electrical Bioimpedance & V Conference on Electrical Impedance Tomography, Gdansk, Poland, 2004 more
2003
R. Merwa, K. Hollaus, H. Scharfetter - Magnetische Induktions-Tomographie: Messprinzip und Lösung des Vorwärtsproblems für die Datenrekonstruktion - BIOMEDIZINISCHE TECHNIK, Vol. 48, No. 1, 2003, pp. 332-333 more
2003
H. Scharfetter, P. Brunner, R. Merwa, B. Brandstätter - Focused conductivity spectroscopy for the monitoring of lung edema: modelling and forward solution - BIOMEDIZINISCHE TECHNIK, Vol. 48, No. 1, 2003 more
2003
R. Merwa, K. Hollaus, B. Brandstätter, H. Scharfetter - Numerical solution of the general 3D eddy current problem for magnetic induction tomography (spectroscopy) - PHYSIOLOGICAL MEASUREMENT, Vol. 24, No. 2, 2003, pp. 545-554 more
2003
B. Brandstätter, K. Hollaus, H. Hutten, M. Mayer, R. Merwa, H. Scharfetter - Direct estimation of Cole parameters in multifrequency EIT using a regularized Gauss–Newton method - PHYSIOLOGICAL MEASUREMENT, Vol. 24, No. 2, 2003, pp. 437-448 more
2003
K. Hollaus, C. Magele, R. Merwa, H. Scharfetter - Simulation of Eddy Currents in Biomedical Applications - Proceedings of the 14th Conference on the Computation of Electromagnetic Fields, New York, United States of America, 2003 more
2003
H. Scharfetter, K. Hollaus, R. Merwa - Sensitivity maps for magnetic induction tomography (MIT): Low-contrast perturbations in a background with physiological conductivity - Proceedings of the 4th Conference on Biomedical Applications of Electrical Impedance Tomography, Manchaster, United Kingdom of… more
2003
J. Rosell, R. Casanas, A. Altes, R. Merwa, K. Hollaus, H. Scharfetter - Non-invasive measurement of liver iron overload by magnetic induction using a planar gradiometer - Proceedings of the 4th Conference on Biomedical Applications of Electrical Impedance Tomography, Manchaster, United Kingdom of Great… more
2003
K. Hollaus, C. Magele, R. Merwa, H. Scharfetter - Fast calculation of the sensitivity matrix in magnetic induction tomography by tetrahedral edge finite elements - Proceedings of the 4th Conference on Biomedical Applications of Electrical Impedance Tomography, Manchaster, United Kingdom of Great Britain… more
2003
R. Casanas, H. Scharfetter, A. Altes, A. Remacha, P. Sarda, J. Sierra, R. Merwa, K. Hollaus, J. Rosell - In-Vitro and In-Vivo Measurement of Iron Concentration in Human Hepatic Tissue by Magnetic Induction Methods - Proceedings of the XXV Annual International Conference of the IEEE Engineering in Medicine… more
2002
R. Merwa, K. Hollaus, B. Brandstätter, H. Scharfetter - Numeric solution of the general 3D eddy current problem for magnetic induction tomography - Proceedings of the First Mummy Range Workshop on EIT, Pingree Park, United States of America, 2002 more
2002
K. Hollaus, C. Magele, B. Brandstätter, R. Merwa, H. Scharfetter - Numerical simulation of the forward problem in magnetic induction tomography of biological tissue - Proceedings of the 10th IGTE Symposion 2002, Graz, Austria, 2002 more
2002
H. Scharfetter, R. Casanas, R. Merwa, J. Rosell - Magnetic induction spectroscopy of biological tissue with a conducting background: experimental demonstration within the b-dispersion - IFMBE Proceedings 3 (1), Wien, Austria, 2002, pp. 88-89 more
2002
Y. Salazar, H. Scharfetter, R. Merwa, J. Cinca, R. Bragos, J. Rosell - A 3D finite element thorax model for non invasive acute ischemia detection by impedance spectroscopy - IFMBE Proceedings 3 (1), Wien, Austria, 2002, pp. 74-75 more
2002
B. Brandstätter, K. Hollaus, C. Magele, M. Mayer, R. Merwa, H. Scharfetter, H. Hutten - EIT spectroscopy by direct multifrequency-regularization of the Gauss-Newton method - Proceedings of the First Mummy Range Workshop on EIT, Pingree Park, United States of America, 2002 more
1999
H. Scharfetter, R. Merwa, F. Kappel, H. Hutten - Modular programming environment for simulation, identification and validation of complex nonlinear compartment models - MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, Vol. 37, No. 2, 1999, pp. 1204-1205 more