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INHALTE

Dipl.-Inf. Alexander Dietzel

Academic Staff

Research & Projects

Research and Area of work:

  • Segmentation of physiological and pathological features in fundus photographs and OCT scans
  • 3D retinal nerve fiber layer segmentation on OCT volume scans
  • 3D vessel tree and optic nerve head reconstruction from OCT-volume scans
  • Co-registration between different modalities (e.g. functional and structural)
  • Standardised system for multi-modality fusion
  • Multimodal statistics
  • Person in charge for the Ophthalmology Laboratory

Personal information

02/2006

Degree in Computer Science, Ilmenau University of Technology, specialisation in Biomedical Engineering
since 03/2006

Member of a research staff, Institute of Biomedical Engineering and Informatics

Teaching

Teaching:

  • lecture/project seminar: Fundamentals of biomedical engineering - Modelling the vascular system 
  •  lecture/project seminar: Specific problems in ophthalmology - Universal retinal coordinate system 
  • project seminar: Fundamentals of medical measuring technology - Sensors 
  • practical course: Determination of visual acuity 
  • practical course: Analysing the vascular system in fundus photographs 
  • practical course: Biotelemetrie 

Thesis of the Study/Advanced Seminars:

  • MA - Modellierung von Unsicherheiten in der retinalen Gefäßanalyse
  • Automatic determination of clinical relevant parameteres of the optic nerve head in OCT scans
  • Automatic segmentation and differentiation of the vascular system in fundus photographs and scans
  •  Automatic determination of the quality of fundus photographs
  • Online registration of fundus photographs
  • Registering histological 2D sections of a rat brain

advanced Seminars and Designprojecte:

Publications

Contributions to international / national journal articles, conferences, workshops:

2012

  • SALEH, K., UNGER, V., DIETZEL, A., GROßJOHANN, R., JÜRGENS, C., TOST, F., and HAUEISEN, J. “Evaluation of a novel method to measure the intraocular pressure based on a mechanical eye model”, 46. Jahrestagung der Deutsche Gesellschaft für Biomedizinische Technik (DGBMT) , Jena, 16.-19. September 2012. (accepted)

2011

  • Haueisen, J., Dietzel, A., Liehr, M., Weiser, Th., Elsarnagawy, T., Bellemann ME.: Bioelectric and biomagnetic measurements are differentially sensitive to spiral currents. Biomedizinische Technik, 56(5): 283-289, 2011
  • Saleh, K., Unger, V., Dietzel, A., Großjohann, R., Jürgens, C., Tost, F., Haueisen, J.: Mechanical eye model for evaluation of intraocular pressure measuring under consideration of the biomechanical characteristics., 10th International Workshop on Biomedical Engineering, Kos Island, Greece, 05-07 October, 2011;
  • Dietzel, A., Nagel, E.: Calculation of Optic Nerve Head Parameters based on OCT data. Symposium OCTI2011, Ilmenau, 12-14 September, 2011; 
  • Dietzel, A., Walz, K., Nagel, E.: Automatische Segmentierung retinaler Schichten in OCTDaten und deren Genauigkeit. 109. DOG Kongress, 29.09.-02.10. 2011, Estrel Hotel, Berlin, 2011; 
  • Unger, V., Saleh, K., Dietzel, A., Heydenreich, D., Großjohann, R., Jürgens, C., Tost, F., Haueisen, J.: Neues Verfahren zur Augeninnendruckmessung unter Berücksichtigung biomechanischer Eigenschaften der Kornea. 45. Jahrestagung der DGBMT, Freiburg, 27-30 September, 2011;

2010

  • Dietzel, A., Haueisen, J.: Coregistration of Fluorescence Lifetime Imaging (FLIM) and Optical Coherence Tomography (OCT). ARVO 2010 Annual Meeting, May 2 - May 6, 2010, Fort Lauderdale/Florida, USA; 
  • Dietzel, A., Klemm, M., Nagel, E., Schweitzer, D., Haueisen, J.: Reproducibility of Fluorescence Lifetime Imaging (FLIM) at the Human Retina based on Multi Exponential Component Fit. In G.K.Lang and S.J.Ryan, editors, World Ophthalmology Congress 2010, Berlin; 
  • Klemm, M., Dietzel, A., Nagel, E., Schweitzer, D., Graichen, U., Haueisen, J.: Reproducibility of Ophthalmic Lifetime Mapper measurements. Symposium FLIM2010, Ilmenau, 2010; 
  • Klemm, M., Dietzel, A., Nagel, E., Schweitzer, D., Graichen, U., Haueisen, J.: Statistical Analysis of Reproducibility of Fluorescence Decay Histograms at the Fundus. Investigative Ophthalmology & Visual Science 51:2293, ARVO, Fort Lauderdale (USA), 2010;

2009

  • Klemm, M., Dietzel, A.: Bildgebung und Spectral Imaging an der Netzhaut. 5. NEMO-SpectroNet Kollaboration Forum;

Patent Disclosures:

Patent Applications:

  • SALEH, K., UNGER, V., DIETZEL, A. , HAUEISEN, J., HEYDENREICH, D., GLEI, H., MÜLLER, J., GROßJOHANN, R., JÜRGENS, C., TOST, F . "Vorrichtung und Verfahren zur automatisierten Bestimmung des Intraokulardruckes" . DE 102011015178 B3

    (erteilt am 03.05.2012)