Wiki source code of Hauptmann, Andreas

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9 == Andreas Hauptmann ==
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11 Tohtorikoulutettava
12 Doktorand
13 Doctoral student
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35 === I have finished my PhD and moved to a new position at the Centre for Medical Image Computing in University College London. ([[Link>>url:http://www.cs.ucl.ac.uk/people/A.Hauptmann.html/||shape="rect"]]) ===
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41 As an applied mathematician with a focus on computational mathematics I am interested in inverse problems with real measurement data, in particular applications to medical imaging.
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43 In my PhD thesis I investigate the problem of partial-boundary data in electrical impedance tomography (EIT), a non-invasive imaging modality that seeks to recover the conductivity of a body from electrical measurements taken at its surface. EIT is a highly non-linear ill-posed inverse problem that needs careful analysis of the underlying mathematics.My work in EIT focuses on developing noise robust sharp images from limited boundary data (e.g. a patient lying on their back or faulty electrodes).
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45 Furthermore, I am interested in dynamic imaging and regularization strategies. That is given a set of measurements at several time instances, we seek to compute a reconstruction that uses all time dependent information. These problems arise for instance in X-ray computed tomography of a moving object.
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47 === Opetus / Undervisning / Teaching ===
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49 Lecturer: **[[Computational methods for Integral Equations>>url:https://wiki.helsinki.fi/display/mathstatKurssit/Computational+methods+for+Integral+Equations||shape="rect"]]**, Spring 2017
50 Teaching Assistant: [[**Bayesian inversion**>>url:https://wiki.helsinki.fi/display/mathstatKurssit/Bayesian+inversion%2C+spring+2016||shape="rect"]], Spring 2016
51 Teaching Assistant: **[[Inverse Problems>>url:http://wiki.helsinki.fi/display/mathstatKurssit/Inverse+problems%2C+spring+2015||shape="rect"]]**, Spring 2015
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53 === Publications ===
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56 (submitted) M. Burger, H. Dirks, L. Frerking, A. Hauptmann, T. Helin, S. Siltanen, //A Variational Reconstruction Method for Undersampled Dynamic X-ray Tomography based on Physical Motion Models//.
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59 (accepted) A. Hauptmann, //Approximation of full-boundary data from partial-boundary electrode measurements//. To appear in Inverse Problems.
60 \\**2017 **M. Alsaker, S. Hamilton, and A. Hauptmann, //A Direct D-bar Method for Partial Boundary Data Electrical Impedance Tomography with A Priori Information//. Inverse Problems and Imaging, 11(3), pp. 427 - 454.
61 \\**2017** A. Hauptmann, S. Santacesaria, S. Siltanen, //Direct inversion from partial-boundary data in electrical impedance tomography//. Inverse Problems 33(2), 025009.
62 \\**2014** S. Hamilton, A. Hauptmann, and S. Siltanen, //A Data-Driven Edge-Preserving D-bar Method for Electrical Impedance Tomography//. Inverse Problems and Imaging, 8(4), pp. 1053-1072.**
63 \\2014** K. Hämäläinen, L. Harhanen, A. Hauptmann, A. Kallonen, E. Niemi, and S. Siltanen, //Total variation regularization for large-scale X-ray tomography//. International Journal of Tomography and Simulation 25(1), pp. 1-25.
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70 ==== Yhteystiedot ====
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72 Huone: B421
73 Osoite: PL 68 (Gustaf Hällströmin katu 2b)
74 00014 Helsingin yliopisto
75 Sähköposti: [[andreas.hauptmann 'at' helsinki.fi>>mailto:andreas.hauptmann@helsinki.fi||shape="rect"]]
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77 ==== Kontaktinformation ====
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79 Rum: B421
80 Adress: PB 68 (Gustaf Hällströms gata 2b)
81 00014 Helsingfors universitet
82 Epost: [[andreas.hauptmann 'at' helsinki.fi>>mailto:andreas.hauptmann@helsinki.fi||shape="rect"]]
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84 ==== Contact information ====
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86 Room: B421
87 Address: P.O. Box 68 (Gustaf Hällströmin katu 2b)
88 FI-00014 University of Helsinki
89 Email: [[andreas.hauptmann 'at' helsinki.fi>>mailto:andreas.hauptmann@helsinki.fi||shape="rect"]]\\
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