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SFB Members at the RICAM – Special Semester

From 10th to 21st of October, the first two workshop-weeks of the RICAM Special Semester “Tomography across the Scales” took place at the Johann Radon Institute for Computational and Applied Mathematics in Linz. There, Fabian Hinterer, Simon Hubmer, Michael Quellmalz, Ekaterina Sherina and Leopold Veselka, all members of the mathematical subprojects within the SFB project, were invited to present their latest scientific advances to an audience of experts in the various fields of Inverse Problems.
Furthermore, the members got the chance to exchange ideas with other researchers and to benefit from external input.
We express our gratitude to the organizers for the invitation and the hospitality during these perfectly organized workshops!

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ESI Workshop: Tomographic Reconstructions and their Startling Applications

The online Workshop at the Erwin Schrödinger International Institute for Mathematics and Physics (ESI) has just started. This is a two-weeks event with more than 50 international researchers participating. 

In the first week (March, 15th – 18th), we have mainly talks from applied mathematicians presenting results on tomographic reconstructions while the second week (March, 23th – 25th) covers the practical applications of such methods in astronomy and medical imaging. See the full program here.

Registration is free. You just have to contact Peter Elbau.

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SFB goes online!

The 5th Internal Meeting and the 4th Member Workshop took place online on September 1st and 2nd, respectively. After the cancellation of the previous meetings due to Covid-19, we managed to meet after a long time (at least online).

In the internal meeting, we had the opportunity to listen to interesting talks from external members of the SFB and participate in special sessions of the collaborating sub-projects. The member workshop consisted of member talks and talks from associated members with potential application to the scope of the SFB. The members elect Simon Hubmer and Ekaterina Sherina as the new member speaker and vice-speaker, respectively.

Hopefully we can meet in person again in Bad Mitterndorf at the end of November.

  • Group photo.
  • Screenshot from R. Leitgeb’s talk.
  • Screenshot from M. Schneider’s talk.
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Cancer diagnosis with mathematics

Otmar Scherzer presented at the Research Newsletter (July/August 2020) of the University of Vienna how mathematics can be used to improve cancer diagnosis. This work is part of the SFB research project “Tomography Across the Scales”. The considered methods have applications from astrophysics to molecular biology.

The main idea (also called inverse problem) is to use tomographic measurements of a biological tissue in order to recover its properties (distinguish between healthy and diseased parts) without damaging it. The created algorithms are tested with simulated and experimental data and the results are promising.

The full article (in German) can be found here.

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Front cover picture in “Inverse Problems”

A figure from the research paper “Preconditioning Inverse Problems for Hyperbolic Equations with Applications to Photoacoustic Tomography” by Alexander Beigl, Otmar Scherzer, Jarle Sogn (JKU, Linz) and Walter Zulehner (JKU, Linz) got chosen for the front cover of the International Journal “Inverse Problems”. The picture appearing at the Volume 36, Number 1 of the journal presents initial source reconstructions from Photoacoustic Tomography data.
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SFB goes to Banff, Canada

Otmar Scherzer was a member of the organizing committee of the “Reconstruction Methods for Inverse Problems” workshop in Banff, Canada, June 23-28, 2019. This workshop brought together researchers working on inverse problems coming from medical imaging, non destructive testing, computer vision and geophysics. The PI of sub-project “Quantitative Coupled Physics Imaging”, Peter Elbau and the post-doctoral researcher of the sub-project “Tomography with Uncertainties”, Ekaterina Sherina presented their recent work related to our SFB project.

Photo credit: The Banff International Research Station
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Reconstruction Methods for Inverse Problems (19w5092)

at Banff, Alberta from Sunday, June 23 to Friday June 28, 2019

Organizers

  • Elena Beretta (NYU Abu Dhabi & Politecnico di Milano)
  • Uri Ascher (University of British Columbia)
  • Otmar Scherzer (University of Vienna)
  • Luminita Vese (University of California, Los Angeles)

Description

Inverse problems require to determine the cause from a set of indirect observations. Such problems appear in medical imaging, non destructive testing of materials, computerized tomography, source reconstructions in acoustics, computer vision and geophysics, to mention but a few. The 21st century is the golden age of computer imaging: Measurement devices have become enormously powerful and huge amounts of data are recorded at every eye glimpse. Moreover, computer technology has developed to such a high degree of efficiency that the evaluation of such an enormous amount of data has become possible *if* adequate mathematical and computational tools are used.

Recently, the community has been exposed to fundamentally new mathematical models (such as learning), which stimulated exciting theoretical developments and new computational algorithms for solving complicated large scale inverse problems. This workshop will survey modern and identify new mathematical and computational developments for tackling such problems.

more details
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The SFB team is growing!

The  SFB “Tomography across the scales” continues to grow. We are pleased to announce that

  • Lisa Krainz joined our team as a PhD student in the Subproject: Multi-Modal Imaging of W. Drexler. She will be working at the Center for Medical Physics and Biomedical Engineering.
  • Leopold Veselka is the PhD student at the Computational Science Center under the supervision of P. Elbau, working in the Subproject: Quantitative Coupled Physics Imaging.
  • Simon Hubmer is the postdoctoral researcher in the Subproject: Tomography in Astronomy of R. Ramlau
  • Mia Kvåle Løvmo joins the team of M. Ritsch-Marte, as a PhD student, working in Subproject: Imaging of Trapped Particles at the Division for Biomedical Physics.
  • Denise Schmutz started her PhD studies at the Computational Science Center, working in O. Scherzer’s  Subproject: Tomography with Uncertainties.
  • Montse López (PostDoc) and Magdalena Schneider (PhD student) joined G. Schütz’s group, participating in Subproject: Ultra-high Resolution Microscopy, located at the Institute of Applied Physics – Biophysics.

 

There are still open positions! You can apply here.