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Centre of Excellence of Inverse Modelling and Imaging

June 1st 2017

The Academy of Finland has selected 12 new Centres of Excellence (CoEs). The first stage of the call attracted a total of 179 letters of intent, and 34 applicants were invited to the second call stage to submit full applications. The operating period of the new CoEs is longer than before, eight years (2018–2025), which according to the Academy of Finland will further serve to support scientific risk-taking.
This is the third time the Centre of Excellence of Inverse Modelling and Imaging was selected to the CoE programme. The Centre of Excellence of Inverse Modelling and Imaging is coordinated by the University of Helsinki, and it comprises a large number of research groups in the field of inverse problems research from several Finnish universities.
UEF’s Inverse Problems Group is based at the Kuopio Campus, comprising four professors and some 20 researchers. Traditionally, UEF’s research group has been the largest one in the CoE. The UEF Inverse Problems Group is led by Professor Jari Kaipio.
Inverse problems research is a field of applied mathematics, which seeks to develop computational methods for medical tomography imaging, non-destructive testing, astronomy and environmental modelling. The UEF Inverse Problems Group focuses on modelling-related uncertainties in particular, as well as on applications in the fields of medicine and sufficiency of natural resources.
The research group is also strong in technology transfer, as the group's researchers have established several companies, such as Numcore, Rocsole, Kuava and Ownsurround in the Kuopio region, and they have also won several national and international prizes.

For further information, please contact:

► Professor Jari Kaipio, tel. +358 40 503 3391, jari(at)math.auckland.ac.nz

► Professor Marko Vauhkonen, tel. +358 40 355 2112, marko.vauhkonen(at)uef.fi

Academy of Finland’s press release


Funding for research on photoacoustic imaging from Jane and Aatos Erkko Foundation

June 10th 2016

Docent Tanja Tarvainen has been awarded a grant of 500 000 euros by Jane and Aatos Erkko Foundation for research on developing novel imaging methods based on light and ultrasound. Light and ultrasound are utilised in many medical examinations such as monitoring blood oxygenation level and pulse, and ultrasound (echo) imaging. In addition to these conventional methods, novel imaging modalities based on light and ultrasound are being developed. Photoacoustic tomography is an emerging imaging modality in which tomographic images are formed based on photoacoustic effect. The research team of Dr Tarvainen investigates mathematical modelling and image reconstruction of photoacoustic tomography with an aim at developing the method towards a quantitative imaging modality.

► Further information: Senior Researcher Tanja Tarvainen, p. 040 355 2310, tanja.tarvainen(at)uef.fi

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Danny Smyl awarded a Fulbright grant to Finland

March 18th 2016

Danny

Danny Smyl from North Carolina State University (NCSU), Raleigh, USA, was awarded a Fulbright U.S. Student Award to Finland from August 2016 to May 2017. The Fulbright funded visit will be hosted by the Inverse Problems group at the Department of Applied Physics, University of Eastern Finland (UEF). Mr. Smyl is currently conducting his PhD work under supervision of Prof. Mohammad Pour-Ghaz, NCSU, on non-destructive testing of concrete. The visit is part of the research collaboration between the research teams of Prof. Pour-Ghaz and Dr. Aku Seppänen, UEF.


Academy funding for a project on remote sensing

December 23th 2015

Docent Aku Seppänen has been awarded a grant of 177 000 euros by the Academy of Finland to launch a new research project "Four-dimensional Airborne Laser Scanning". The project is part of a research consortium led by Associate Professor Petteri Packalen from the School of Forest Sciences, University of Eastern Finland. The grant was awarded from Academy's ICT2023 programme (third thematic call "Methods and applications for management and analysis of big data and open data") for years 2016-2017..

► Further information: Academy Research Fellow Aku Seppänen

Aku


Dissertation: Dong Liu

December 12th 2015

Dong

Dong Liu defends his doctoral dissertation "Non-linear Difference Imaging Approach to Electrical Impedance Tomography" in public examination in University of Eastern Finland, Kuopio campus, December 12th, 2015, 12pm (Snellmania, SN201 Auditorium).

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Dissertation: Meghdoot Mozumder

December 5th 2015

Meghdoot

Meghdoot Mozumder defends his doctoral dissertation "Image reconstruction with error modelling in diffuse optical tomography" in public examination in University of Eastern Finland, Kuopio campus, December 5th, 2014, 12 noon (Snellmania, SN200 Auditorium).

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Acoustic days 2015 in Kuopio, September 1st-2nd

August 21th 2015

Acoustic days 2015 is organized in Kuopio Music Center at September 1-2, 2015. The days are organized by The Acoustical Society of Finland.

Read more (in Finnish)

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A special issue in Inverse Problems

November 20th 2014

A special issue in the journal Inverse Problems on "Inverse Problems in the Bayesian Framework" was published in November 2014. The special issue was edited by Daniela Calvetti and Erkki Somersalo from Case Western Reserve University and Jari Kaipio from UEF.

Editorial

News


Editorial in Journal of Nuclear Cardiology

June 17th 2015

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A research article “Dependence of left ventricular functional parameters on image acquisition time in cardiac-gated myocardial perfusion SPECT” by Matti Kortelainen et. al. published in Journal of Nuclear Cardiology was reviewed in the Editorial of the journal. In their work, Kortelainen et. al. developed methods for respiratory motion correction in myocardial perfusion imaging using single-photon emission computed tomography (SPECT) and positron emission tomography (PET).

M. Kortelainen, T. Koivumäki, M. Vauhkonen, M. Hakulinen: “Dependence of left ventricular functional parameters on image acquisition time in cardiac-gated myocardial perfusion SPECT”

John O. Prior: “How much shorter is better? Investigating image acquisition time reduction on left ventricular phase analysis for cardiac dyssynchrony”, Editorial, Journal of Nuclear Cardiology , 2015.


New Academy Postdoctoral Researchers

April 29th 2015

Academy of Finland granted Postdoctoral Researcher posts to Christina Brandt and Aki Pulkkinen. Both projects will start in September 1, 2015. Christina Brandt received her PhD from the University of Bremen in 2012, and has worked as a Postdoctoral researcher in the University of Osnabrück, Germany, since 2013. The topic of her Academy postdoctoral project is “Approximation error modeling in large scale inverse problems in imaging”. Aki Pulkkinen defended his PhD thesis in the University of Eastern Finland in August 2014. He visited the Sunnybrook Research Institute in Toronto, Canada during 2008-2011, and continued his research in the Kuopio Inverse Problems group 2012-2014. The topic of his Academy postdoctoral project is “Quantitative treatment planning for transcranial focused ultrasound therapy”.

"Jackpot" from the Academy of Finland, Research Council for Natural Sciences and Engineering

Christina and Aki


Highligths of 2014 in Inverse Problems Journal

February 24th 2015

News

An article by the Kuopio Inverse Problems Group was selected as highlights of 2014 in Inverse Problems Journal:

Estimating pipeline location using ground-penetrating radar data in the presence of model uncertainties. Timo Lähivaara, Nicholas F Dudley Ward, Tomi Huttunen, Jari P Kaipio and Kati Niinimäki, 2014, Inverse Problems, 30 114006, doi: 10.1088/0266-5611/30/11/114006


Acoustic days 2015 in Kuopio

February 23rd 2015

The Acoustical Society of Finland will organize Acoustic days in Kuopio, September 1-2, 2015.

Read more (in Finnish)

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Dissertation: Jari Kourunen

December 13th 2014

Jari

Jari Kourunen defends his doctoral dissertation "Imaging of mixing in selected industrial processes using electrical resistance tomography" in public examination in University of Eastern Finland, Kuopio campus, December 13th, 2014, 12pm (Snellmania, SN200 Auditorium).

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"Seismic signals reveal groundwater reserves" interview in CSC

November 28th 2014

Timo Lähivaara was interviewed in CSC - IT Center For Science. Lähivaara has developed methods for mapping and monitoring groundwater reserves.

Read the interview

Timo


Dissertation: Ossi Lehtikangas

November 20th 2014

Ossi

Ossi Lehtikangas defends his doctoral dissertation "Approximations and hybrid models for modeling light propagation in biological tissues" in public examination in University of Eastern Finland, Kuopio campus, November 29th, 2014, 12pm (Snellmania, SN200 Auditorium).

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Dissertation: Aki Pulkkinen

July 11th 2014

Aki Pulkkinen defends his doctoral dissertation "Simulation Methods in Transcranial Ultrasound Therapy" in public examination in University of Eastern Finland, Kuopio campus, August 9th, 2014, 12pm (L21, Snellmania building).

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Aki


'Sensing skin' quickly detects cracks, damage in concrete structures

July 10th 2014

Sensing skin monitoring of concrete

The UEF Inverse problems group and the group of Prof. Mohammad Pour-Ghaz from North Carolina State University have recently developed a new 'sensing skin' technology for detecting cracks in concrete structures. The research has drawn a wide interest in public media; it has been reported e.g. by phys.org, NASA Tech Briefs, wn.com, Science Newsline, ScienceDaily, Durability+Design, materialstoday, theEngineer, World Industrial Reporter and Capitalista. In Finnish press, the research was noted e.g. by Aamulehti, Turun Sanomat, Maaseudun tulevaisuus and Yle.

► M. Hallaji, A. Seppänen, M. Pour-Ghaz: Electrical impedance tomography-based sensing skin for quantitative imaging of damage in concrete, Smart Materials and Structures, 23: 085001, 2014.


Marko Vauhkonen appointed to the position of the professor in industrial physics and mathematics

June 1st 2014

Marko Vauhkonen, PhD, was appointed to the position of the professor in industrial physics and mathematics in the University of Eastern Finland. Prof. Vauhonen is the leader of the Mathematical Modelling group in the Department of Applied Physics.

Read more (in Finnish)

Marko


Dissertation: Antti Lipponen

May 29th 2014

Antti Lipponen defends his doctoral dissertation "Nonstationary Flow Fields, Model Reduction and Approximation Errors in Process Tomography" in public examination in University of Eastern Finland, Kuopio campus, June 6th, 2014, 12pm (L21, Snellmania building).

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Antti


Magnus Ehrnrooth Foundation Grant

March 6th 2014

Tanja

Tanja Tarvainen was awarded a 60 000 € grant by Magnus Ehrnrooth Foundation for research on quantitative photoacoustic tomography. In the project, Tarvainen's research team develops modelling and image reconstruction methods for quantitative photoacoustic tomography based on Bayesian approach for ill-posed inverse problems.
In 2014, Magnus Ehrnrooth Foundation awarded 202 grants amounting to 1 741 875 €. The grant received by Tanja Tarvainen was the largest grant awarded in 2014.

Grants awarded by the Magnus Ehrnrooth foundation in 2014


Insights article in Inverse Problems

February 28th 2014


An insights article Estimation of aquifer dimensions from passive seismic signals with approximate wave propagation models by T. Lähivaara, N. Dudley Ward, T. Huttunen, J. Koponen and J. Kaipio was published in Inverse Problems.

Lähivaara et al.


Kaipio et al. 2000 in Top 30 Cited Inverse Problems Papers

February 28th 2014

Inverse Problems journal 30 years

Inverse Problems is celebrating 30 years since the start of the journal's regular publication in 1985. The journal has listed its top 30 cited articles. The article by Kaipio et al. 2000 is among those:

Jari P Kaipio, Ville Kolehmainen, Erkki Somersalo, Marko Vauhkonen: "Statistical inversion and Monte Carlo sampling methods in electrical impedance tomography", Inverse Problems 16 1487 - 1522, doi:10.1088/0266-5611/16/5/321, 2000.
Top 30 cited articles in Inverse Problems


Kati Niinimäki awarded with Pertti Lindfors price

December 18th 2013

The Finnish Inverse Problems Society awarded Kati Niinimäki, Ph.D. with Pertti Lindfors prize for her work and achievements in the field of computational optimization methods for large-scale inverse problems. The award was granted to Kati Niinimäki in the annual Inverse Days in Inari, in December 12th, 2013.

Finnish Inverse Problems Society

Kati Niinimäki and the President of the Finnish Inverse Problems Society Prof. Samuli Siltanen


Dissertation: Anna Kaasinen

October 25th 2013

Anna

Anna Kaasinen defends her doctoral dissertation "Optimal Control in Process Tomography" in public examination in University of Eastern Finland, Kuopio campus, October 29th, 2013, 12pm (L21, Snellmania building).

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Dissertation: Teemu Luostari

October 21th 2013

Teemu Luostari defends his doctoral dissertation "Non-polynomial approximation methods in acoustics and elasticity" in public examination in University of Eastern Finland, Kuopio campus, October 25th, 2013, 12pm (ML3, Medistudia building).

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Teemu


Dissertation: Kimmo Karhunen

September 27th 2013

Kimmo

Kimmo Karhunen defends his doctoral dissertation "Electrical Resistance Tomography Imaging of Concrete" in public examination in University of Eastern Finland, Kuopio campus, October 3rd, 2013 (ML1, Medistudia building).

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Insights article in Inverse Problems

June 19th 2013


An insights article Quantitative photoacoustic tomography using the radiative transfer equation by T. Saratoon, T. Tarvainen, B.T. Cox and S.R. Arridge was published in Inverse Problems.

News


Dissertation: Kati Niinimäki

June 2nd 2013

Kati

Kati Niinimäki defends her doctoral dissertation "Computational optimization methods for large-scale inverse problems" in public examination in University of Eastern Finland, Kuopio campus, June 12th, 2013 (L22, Snellmania building).

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Anssi Lehikoinen selected as the Young Researcher Entrepreneur of 2013

May 23th 2013

Anssi Lehikoinen, PhD, was selected as the Young researcher Entrepreneur of the Year 2013. This is a new entrepreneurial award which purpose is to acknowledge researches who have developed business from research. The award was granted by the Federation of Finnish Enterprises and the Special Fund for Academic Entrepreneurship of KAUTE Foundation. Lehikoinen is the CEO of Rocsole Ltd and he defended his doctoral dissertation "Modeling Uncertainties in Process Tomography and Hydrogeophysics" succesfully in November 2012. The recipients of the Young Researcher Entrepreneur Award were announced on 20 May in Turku, Finland.

► Read more here (In Finnish) and here (In Finnish)

Anssi


Aku Seppänen appointed as Academy Research Fellow

May 8th 2013

Aku

Aku Seppänen, PhD, was appointed as an Academy Research Fellow by the Research Council for Natural Sciences and Engineering of the Academy of Finland at May 8th 2013. In his research Aku Seppänen develops advanced modelling and inversion method for non-destructive material testing using various techniques which include e.g. electrical impedance tomography. For more information about the Academy decision:

Read more (In Finnish)


Anssi Lehikoinen selected as a promising young researcher in UEF

March 29th 2013

Anssi Lehikoinen, PhD, was selected as a promising young researcher in the Faculty of Science and Forestry in University of Eastern Finland by Rector Perttu Vartiainen and Academic Rector Jukka Mönkkönen. The award is presented in recognition of an outstanding doctoral dissertation completed at the end of the early stage researcher career phase. Lehikoinen defended his PhD thesis "Modeling Uncertainties in Process Tomography and Hydrogeophysics" succesfully in November 2012. The recipients of the Young Researcher Award were announced during the university's anniversary celebration held on 21 March.

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Anssi


Highligths of 2012 in Inverse Problems Journal

March 28th 2013

News

Two articles by the Kuopio Inverse Problems Group were selected as highlights of 2012 in Inverse Problems Journal:
Sparsity-promoting Bayesian inversion V Kolehmainen, M Lassas, K Niinimäki and S Siltanen, 2012, Inverse Problems, 28, 025005, doi: 10.1088/0266-5611/28/2/025005
Reconstructing absorption and scattering distributions in quantitative photoacoustic tomography T Tarvainen, B T Cox, J P Kaipio and S R Arridge, 2012, Inverse Problems 28, 084009, doi: 10.1088/0266-5611/28/8/084009
Read also an Insights of the authors -article Recovering hidden sparse signals using Bayes' formula by V Kolehmainen, M Lassas, K Niinimäki and S Siltanen.


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