Graph Convolutional Networks Enable Fast Hemorrhagic Stroke Monitoring With Electrical Impedance Tomography.

Ville Kolehmainen https://mathgenealogy.org/id.php?id=232411 https://orcid.org/0000-0002-5621-795X https://www.wikidata.org/entity/Q55590581 https://ieeexplore.ieee.org/author/37282643900 https://zbmath.org/authors/?q=ai:kolehmainen.ville

Jussi Toivanen Ville Kolehmainen Antti Paldanius Asko Hänninen Andreas Hauptmann Sarah Jane Hamilton Graph Convolutional Networks Enable Fast Hemorrhagic Stroke Monitoring With Electrical Impedance Tomography. 2026 February 851-861 73 IEEE Trans. Biomed. Eng. 2 https://doi.org/10.1109/TBME.2025.3594249 db/journals/tbe/tbe73.html#ToivanenKPHHH26 streams/journals/tbe

Altti Jääskeläinen Anton Vavilov Jussi Toivanen Asko Hänninen Ville Kolehmainen Nuutti Hyvönen Local electrical impedance tomography via projections. 2026 January abs/2601.14198 CoRR https://doi.org/10.48550/arXiv.2601.14198 db/journals/corr/corr2601.html#abs-2601-14198 streams/journals/corr

Aidan Mason-Mackay Daniela Calvetti Erkki Somersalo Antti Aarnio Mikko I. Kettunen Ekaterina Paasonen Olli Gröhn Ville Kolehmainen Sparse Dictionary-Based Solution of Dynamic Inverse Problems. 2026 February abs/2602.18593 CoRR https://doi.org/10.48550/arXiv.2602.18593 db/journals/corr/corr2602.html#abs-2602-18593 streams/journals/corr

Aada Hakula Pauliina Hirvi Nuutti Hyvönen Altti Jääskeläinen Ville Kolehmainen Projections for handling uncertainties and enabling domain truncation in diffuse optical tomography. 2026 April abs/2604.26548 CoRR https://doi.org/10.48550/arXiv.2604.26548 db/journals/corr/corr2604.html#abs-2604-26548 streams/journals/corr

Ville-Veikko Wettenhovi Ari Hietanen Kati Niinimäki Marko Vauhkonen Ville Kolehmainen Filtering-Based Preconditioner for Accelerated High-Dimensional Cone-Beam CT Image Reconstruction. 60 2025 December 67 J. Math. Imaging Vis. 6 https://doi.org/10.1007/s10851-025-01276-4 db/journals/jmiv/jmiv67.html#WettenhoviHNVK25 streams/journals/jmiv

Altti Jääskeläinen Jussi Toivanen Asko Hänninen Ville Kolehmainen Nuutti Hyvönen Projection-Based Preprocessing for Electrical Impedance Tomography to Reduce the Effect of Electrode Contacts. 1681-1706 2025 18 SIAM J. Imaging Sci. 3 https://doi.org/10.1137/24m1719517 db/journals/siamis/siamis18.html#JaaskelainenTHKH25 streams/journals/siamis

Antti Kukkurainen Antti Lipponen Neus Sabater Antti Arola Ville Kolehmainen Simulation Study on Improving Spectrally Resolved Solar-Induced Fluorescence Satellite Retrievals Under Uncertain Atmospheric States. 1-9 2025 63 IEEE Trans. Geosci. Remote. Sens. https://doi.org/10.1109/TGRS.2025.3590496 db/journals/tgrs/tgrs63.html#KukkurainenLSAK25 streams/journals/tgrs

Daniela Calvetti Nuutti Hyvönen Ville Kolehmainen Erkki Somersalo Spotlight inversion by orthogonal projections. 2025 September abs/2509.15512 CoRR https://doi.org/10.48550/arXiv.2509.15512 db/journals/corr/corr2509.html#abs-2509-15512 streams/journals/corr

Jussi Toivanen Ville Kolehmainen Antti Paldanius Asko Hänninen Andreas Hauptmann Sarah Jane Hamilton Graph convolutional networks enable fast hemorrhagic stroke monitoring with electrical impedance tomography. 2024 abs/2412.07888 CoRR https://doi.org/10.48550/arXiv.2412.07888 db/journals/corr/corr2412.html#abs-2412-07888 streams/journals/corr

Sarah Jane Hamilton Peter A. Muller Ville Kolehmainen Jussi Toivanen Fast 3D Partial Boundary Data EIT Reconstructions using Direct Inversion CGO-based Methods. 2024 abs/2412.10520 CoRR https://doi.org/10.48550/arXiv.2412.10520 db/journals/corr/corr2412.html#abs-2412-10520 streams/journals/corr

Altti Jääskeläinen Jussi Toivanen Asko Hänninen Ville Kolehmainen Nuutti Hyvönen Projection-based preprocessing for electrical impedance tomography to reduce the effect of electrode contacts. 2024 abs/2412.15009 CoRR https://doi.org/10.48550/arXiv.2412.15009 db/journals/corr/corr2412.html#abs-2412-15009 streams/journals/corr

Antti Paajanen Matti Hanhela Nina Hänninen Olli Nykänen Ville Kolehmainen Mikko J. Nissi Fast Compressed Sensing of 3D Radial T1 Mapping with Different Sparse and Low-Rank Models. 151 2023 9 J. Imaging 8 https://doi.org/10.3390/jimaging9080151 db/journals/jimaging/jimaging9.html#PaajanenHHNKN23

M. Ziaul Arif Aku Seppänen Ville Kolehmainen Marko Vauhkonen Dual-Modal Electrical Imaging of Two-Phase Flow - Experimental Evaluation of the State Estimation Approach. 4462 2023 23 Sensors 9 https://doi.org/10.3390/s23094462 db/journals/sensors/sensors23.html#ArifSKV23

Sarah Jane Hamilton Peter A. Muller David Isaacson Ville Kolehmainen Jonathan C. Newell Omid Rajabi Shishvan Gary J. Saulnier Jussi Toivanen Fast Absolute 3D CGO-Based Electrical Impedance Tomography on Experimental Tank Data. 2023 abs/2301.01655 CoRR https://doi.org/10.48550/arXiv.2301.01655 db/journals/corr/corr2301.html#abs-2301-01655

Matti Hanhela Antti Paajanen Mikko J. Nissi Ville Kolehmainen Embedded Quantitative MRI T1ρ Mapping Using Non-Linear Primal-Dual Proximal Splitting. 157 2022 8 J. Imaging 6 https://doi.org/10.3390/jimaging8060157 db/journals/jimaging/jimaging8.html#HanhelaPNK22

Ville-Veikko Wettenhovi Ville Kolehmainen Mikko I. Kettunen Olli Gröhn Marko Vauhkonen State Estimation of Time-Varying MRI with Radial Golden Angle Sampling. 825-844 2022 64 J. Math. Imaging Vis. 8 https://doi.org/10.1007/s10851-022-01095-x db/journals/jmiv/jmiv64.html#WettenhoviKKGV22

Antti Paldanius Bachir Dekdouk Jussi Toivanen Ville Kolehmainen Jari A. K. Hyttinen Sensitivity Analysis Highlights the Importance of Accurate Head Models for Electrical Impedance Tomography Monitoring of Intracerebral Hemorrhagic Stroke. 1491-1501 2022 69 IEEE Trans. Biomed. Eng. 4 https://doi.org/10.1109/TBME.2021.3120929 db/journals/tbe/tbe69.html#PaldaniusDTKH22

Antti Paldanius Bachir Dekdouk Jussi Toivanen Ville Kolehmainen Jari A. K. Hyttinen Corrections to "Sensitivity Analysis Highlights the Importance of Accurate Head Models for Electrical Impedance Tomography Monitoring of Intracerebral Hemorrhagic Stroke". 2401 2022 69 IEEE Trans. Biomed. Eng. 7 https://doi.org/10.1109/TBME.2022.3171670 db/journals/tbe/tbe69.html#PaldaniusDTKH22a

Matti Hanhela Olli Gröhn Mikko I. Kettunen Kati Niinimäki Marko Vauhkonen Ville Kolehmainen Data-Driven Regularization Parameter Selection in Dynamic MRI. 38 2021 7 J. Imaging 2 https://doi.org/10.3390/jimaging7020038 db/journals/jimaging/jimaging7.html#HanhelaGKNVK21

Juan P. Agnelli Ville Kolehmainen Matti Lassas Petri Ola Samuli Siltanen Simultaneous Reconstruction of Conductivity, Boundary Shape, and Contact Impedances in Electrical Impedance Tomography. 1407-1438 2021 14 SIAM J. Imaging Sci. 4 https://doi.org/10.1137/21M1407975 db/journals/siamis/siamis14.html#AgnelliKLOS21

M. Ziaul Arif Ossi Lehtikangas Aku Seppänen Ville Kolehmainen Marko Vauhkonen Joint Reconstruction of Conductivity and Velocity in Two-Phase Flows Using Electromagnetic Flow Tomography and Electrical Tomography: A Simulation Study. 1-17 2021 70 IEEE Trans. Instrum. Meas. https://doi.org/10.1109/TIM.2021.3117365 db/journals/tim/tim70.html#ArifLSKV21

Guanghui Liang Feng Dong 0001 Ville Kolehmainen Marko Vauhkonen Shangjie Ren Nonstationary Image Reconstruction in Ultrasonic Transmission Tomography Using Kalman Filter and Dimension Reduction. 1-12 2021 70 IEEE Trans. Instrum. Meas. https://doi.org/10.1109/TIM.2020.3031172 db/journals/tim/tim70.html#LiangDKVR21

Juan P. Agnelli Ville Kolehmainen Matti Lassas Petri Ola Samuli Siltanen Simultaneous reconstruction of conductivity, boundary shape and contact impedances in electrical impedance tomography. 2021 abs/2104.02043 CoRR https://arxiv.org/abs/2104.02043 db/journals/corr/corr2104.html#abs-2104-02043

Valentina Candiani Nuutti Hyvönen Jari P. Kaipio Ville Kolehmainen Approximation error method for imaging the human head by electrical impedance tomography. 2021 abs/2106.06238 CoRR https://arxiv.org/abs/2106.06238 db/journals/corr/corr2106.html#abs-2106-06238

Matti Hanhela Mikko I. Kettunen Olli Gröhn Marko Vauhkonen Ville Kolehmainen Temporal Huber Regularization for DCE-MRI. 1334-1346 2020 62 J. Math. Imaging Vis. 9 https://doi.org/10.1007/s10851-020-00985-2 db/journals/jmiv/jmiv62.html#HanhelaKGVK20

Kati Niinimäki Matti Hanhela Ville Kolehmainen Parameter selection in dynamic contrast-enhanced magnetic resonance tomography. 2020 abs/2002.09129 CoRR https://arxiv.org/abs/2002.09129 db/journals/corr/corr2002.html#abs-2002-09129

Sarah Jane Hamilton David Isaacson Ville Kolehmainen Peter A. Muller Jussi Toivanen Patrick F. Bray 3D EIT Reconstructions from Electrode Data using Direct Inversion D-bar and Calderon Methods. 2020 abs/2007.03018 CoRR https://arxiv.org/abs/2007.03018 db/journals/corr/corr2007.html#abs-2007-03018

Eeva-Sofia Haukipuro Ville Kolehmainen Janne M. J. Huttunen Sebastian Remander Janne Salo Tuomas Takko Le Ngu Nguyen Stephan Sigg Rainhard Dieter Findling Mobile Brainwaves: On the Interchangeability of Simple Authentication Tasks with Low-Cost, Single-Electrode EEG Devices. 760-767 2019 102-B IEICE Trans. Commun. 4 https://doi.org/10.1587/transcom.2018SEP0016 http://search.ieice.org/bin/summary.php?id=e102-b_4_760 db/journals/ieicet/ieicet102b.html#HaukipuroKHRSTN19

Ville-Veikko Wettenhovi Ville Kolehmainen Joanna K. Huttunen Mikko I. Kettunen Olli Gröhn Marko Vauhkonen State Estimation with Structural Priors in fMRI. 174-188 2018 60 J. Math. Imaging Vis. 2 https://doi.org/10.1007/s10851-017-0749-x https://www.wikidata.org/entity/Q59515187 db/journals/jmiv/jmiv60.html#WettenhoviKHKGV18

Antti Lipponen Janne M. J. Huttunen Sami Romakkaniemi Harri Kokkola Ville Kolehmainen Correction of Model Reduction Errors in Simulations. 2018 40 SIAM J. Sci. Comput. 1 https://doi.org/10.1137/15M1052421 https://www.wikidata.org/entity/Q59863850 db/journals/siamsc/siamsc40.html#LipponenHRKK18

Sarah Jane Hamilton Asko Hänninen Andreas Hauptmann Ville Kolehmainen Beltrami-Net: Domain Independent Deep D-bar Learning for Absolute Imaging with Electrical Impedance Tomography (a-EIT). 2018 abs/1811.12830 CoRR http://arxiv.org/abs/1811.12830 db/journals/corr/corr1811.html#abs-1811-12830

Gerardo González Ville Kolehmainen Aku Seppänen Isotropic and anisotropic total variation regularization in electrical impedance tomography. 564-576 2017 74 Comput. Math. Appl. 3 https://doi.org/10.1016/j.camwa.2017.05.004 db/journals/cma/cma74.html#GonzalezKS17

Kati Niinimäki Matti Lassas Keijo Hämäläinen Aki Kallonen Ville Kolehmainen Esa Niemi Samuli Siltanen Multiresolution Parameter Choice Method for Total Variation Regularized Tomography. 938-974 2016 9 SIAM J. Imaging Sci. 3 https://doi.org/10.1137/15M1034076 db/journals/siamis/siamis9.html#NiinimakiLHKKNS16

Dong Liu 0007 Ville Kolehmainen Samuli Siltanen Anne-Maria Laukkanen Aku Seppänen Nonlinear Difference Imaging Approach to Three-Dimensional Electrical Impedance Tomography in the Presence of Geometric Modeling Errors. 1956-1965 2016 63 IEEE Trans. Biomed. Eng. 9 https://doi.org/10.1109/TBME.2015.2509508 https://www.wikidata.org/entity/Q50752172 db/journals/tbe/tbe63.html#LiuKSLS16

Matthias J. Ehrhardt Pawel Markiewicz Maria Liljeroth Anna Barnes Ville Kolehmainen John S. Duncan Luis Pizarro David Atkinson Brian F. Hutton Sébastien Ourselin Kris Thielemans Simon R. Arridge PET Reconstruction With an Anatomical MRI Prior Using Parallel Level Sets. 2189-2199 2016 35 IEEE Trans. Medical Imaging 9 https://doi.org/10.1109/TMI.2016.2549601 https://www.wikidata.org/entity/Q39833157 db/journals/tmi/tmi35.html#EhrhardtMLBKDPA16

Simon R. Arridge Jari P. Kaipio Ville Kolehmainen Tanja Tarvainen Optical Imaging. 1033-1079 2015 Handbook of Mathematical Methods in Imaging https://doi.org/10.1007/978-1-4939-0790-8_21 reference/sp/2015mmi db/reference/sp/mmi2015.html#ArridgeKKT15

Keijo Hämäläinen Aki Kallonen Ville Kolehmainen Matti Lassas Kati Niinimäki Samuli Siltanen Sparse Tomography. 2013 35 SIAM J. Sci. Comput. 3 https://doi.org/10.1137/120876277 https://www.wikidata.org/entity/Q109235488 db/journals/siamsc/siamsc35.html#HamalainenKKLNS13

Antti Nissinen Ville Kolehmainen Jari P. Kaipio Compensation of Modelling Errors Due to Unknown Domain Boundary in Electrical Impedance Tomography. 231-242 2011 30 IEEE Trans. Medical Imaging 2 https://doi.org/10.1109/TMI.2010.2073716 https://www.wikidata.org/entity/Q46695253 db/journals/tmi/tmi30.html#NissinenKK11

Aki Seppänen Antti Nissinen Ville Kolehmainen Samuli Siltanen Anne-Maria Laukkanen Electrical impedance tomography imaging of larynx. 27-29 2011 MAVEBA https://www.isca-archive.org/maveba_2011/seppanen11_maveba.html conf/maveba/2011 db/conf/maveba/maveba2011.html#SeppanenNKSL11

Ville Kolehmainen Matti Lassas Petri Ola Calderón's Inverse Problem with an Imperfectly Known Boundary and Reconstruction Up to a Conformal Deformation. 1371-1381 2010 42 SIAM J. Math. Anal. 3 https://doi.org/10.1137/080716918 db/journals/siamma/siamma42.html#KolehmainenLO10

Kati Niinimäki Samuli Siltanen Ville Kolehmainen Bayesian multiresolution method for local X-ray tomography in dental radiology. 72460 2009 Computational Imaging https://doi.org/10.1117/12.815276 conf/cimaging/2009 db/conf/cimaging/cimaging2009.html#NiinimakiSK09

Ville Kolehmainen Matti Lassas Samuli Siltanen Limited Data X-Ray Tomography Using Nonlinear Evolution Equations. 1413-1429 2008 30 SIAM J. Sci. Comput. 3 https://doi.org/10.1137/050622791 db/journals/siamsc/siamsc30.html#KolehmainenLS08

Ville Kolehmainen Matti Lassas Petri Ola Electrical Impedance Tomography Problem With Inaccurately Known Boundary and Contact Impedances. 1404-1414 2008 27 IEEE Trans. Medical Imaging 10 https://doi.org/10.1109/TMI.2008.920600 https://www.wikidata.org/entity/Q46279637 db/journals/tmi/tmi27.html#KolehmainenLO08

Ville Kolehmainen Antti Vanne Samuli Siltanen Seppo Järvenpää Jari P. Kaipio Matti Lassas Martti Kalke Bayesian inversion method for 3D dental X-ray imaging. 248-253 2007 124 Elektrotech. Informationstechnik 7-8 https://doi.org/10.1007/s00502-007-0450-7 db/journals/ei/ei124.html#KolehmainenVSJKLK07

Ville Kolehmainen Matti Lassas Petri Ola The Inverse Conductivity Problem with an Imperfectly Known Boundary in Three Dimensions. 1440-1452 2007 67 SIAM J. Appl. Math. 5 https://doi.org/10.1137/060666986 db/journals/siamam/siamam67.html#KolehmainenLO07

Sami S. Brandt Ville Kolehmainen Structure-From-Motion Without Correspondence From Tomographic Projections by Bayesian Inversion Theory. 238-248 2007 26 IEEE Trans. Medical Imaging 2 https://doi.org/10.1109/TMI.2006.889740 https://www.wikidata.org/entity/Q33274114 db/journals/tmi/tmi26.html#BrandtK07

Solomon Gilbert Diamond Theodore J. Huppert Ville Kolehmainen Maria Angela Franceschini Jari P. Kaipio Simon R. Arridge David A. Boas Dynamic physiological modeling for functional diffuse optical tomography. 88-101 2006 30 NeuroImage 1 https://doi.org/10.1016/j.neuroimage.2005.09.016 https://www.wikidata.org/entity/Q37161026 db/journals/neuroimage/neuroimage30.html#DiamondHKFKAB06

Ville Kolehmainen Antti Vanne Samuli Siltanen Seppo Järvenpää Jari P. Kaipio Matti Lassas Martti Kalke Parallelized Bayesian inversion for three-dimensional dental X-ray imaging. 218-228 2006 25 IEEE Trans. Medical Imaging 2 https://doi.org/10.1109/TMI.2005.862662 https://www.wikidata.org/entity/Q39745259 db/journals/tmi/tmi25.html#KolehmainenVSJKLK06

Ville Kolehmainen Simon R. Arridge Jari P. Kaipio Martin Schweiger Erkki Somersalo Tanja Tarvainen Marko Vauhkonen Approximation Errors and Model Reduction in Optical Tomography. 2659-2662 2006 EMBC https://doi.org/10.1109/IEMBS.2006.260738 https://www.wikidata.org/entity/Q50882933 conf/embc/2006 db/conf/embc/embc2006.html#KolehmainenAKSS06 Ville Kolehmainen Matti Lassas Petri Ola Electrical impedance tomography problem with inaccurately known boundary and contact impedances. 1124-1127 2006 conf/isbi/2006 ISBI https://doi.org/10.1109/ISBI.2006.1625120 db/conf/isbi/isbi2006.html#KolehmainenLO06

Ville Kolehmainen Matti Lassas Petri Ola The Inverse Conductivity Problem with an Imperfectly Known Boundary. 365-383 2005 66 SIAM J. Appl. Math. 2 https://doi.org/10.1137/040612737 https://www.wikidata.org/entity/Q126193349 db/journals/siamam/siamam66.html#KolehmainenLO05

Solomon Gilbert Diamond Theodore J. Huppert Ville Kolehmainen Maria Angela Franceschini Jari P. Kaipio Simon R. Arridge David A. Boas Physiological System Identification with the Kalman Filter in Diffuse Optical Tomography. 649-656 2005 conf/miccai/2005-2 MICCAI (2) https://doi.org/10.1007/11566489_80 https://www.wikidata.org/entity/Q62491333 db/conf/miccai/miccai2005-2.html#DiamondHKFKAB05 Sami S. Brandt Ville Kolehmainen Motion Without Correspondence from Tomographic Projections by Bayesian Inversion Theory. 582-587 2004 conf/cvpr/2004 CVPR (1) https://doi.ieeecomputersociety.org/10.1109/CVPR.2004.163 db/conf/cvpr/cvpr2004.html#BrandtK04 Antti Aarnio Juan P. Agnelli M. Ziaul Arif Antti Arola Simon R. Arridge David Atkinson Anna Barnes David A. Boas Sami S. Brandt Patrick F. Bray Daniela Calvetti Valentina Candiani Bachir Dekdouk Solomon Gilbert Diamond Feng Dong 0001 John S. Duncan Matthias J. Ehrhardt Rainhard Dieter Findling Maria Angela Franceschini Gerardo González Ekaterina Paasonen Olli Gröhn Olli Gröhn Aada Hakula Keijo Hämäläinen Sarah Jane Hamilton Matti Hanhela Asko Hänninen Nina Hänninen Eeva-Sofia Haukipuro Andreas Hauptmann Ari Hietanen Pauliina Hirvi Theodore J. Huppert Brian F. Hutton Janne M. J. Huttunen Joanna K. Huttunen Jari A. K. Hyttinen Nuutti Hyvönen David Isaacson Altti Jääskeläinen Seppo Järvenpää Jari P. Kaipio Martti Kalke Aki Kallonen Mikko I. Kettunen Harri Kokkola Antti Kukkurainen Matti Lassas Anne-Maria Laukkanen Ossi Lehtikangas Guanghui Liang Maria Liljeroth Antti Lipponen Dong Liu 0007 Pawel J. MarkiewiczPawel Markiewicz Aidan Mason-Mackay Peter A. Muller Jonathan C. Newell Le Ngu Nguyen Esa Niemi Kati Niinimäki Mikko J. Nissi Antti Nissinen Olli Nykänen Petri Ola Sébastien Ourselin Antti Paajanen Antti Paldanius Luis Pizarro Sebastian Remander Shangjie Ren Sami Romakkaniemi Neus Sabater Janne Salo Gary J. Saulnier Martin Schweiger Aki Seppänen Aku Seppänen Omid Rajabi Shishvan Stephan Sigg Samuli Siltanen Erkki Somersalo Tuomas Takko Tanja Tarvainen Kris Thielemans Jussi Toivanen Antti Vanne Marko Vauhkonen Anton Vavilov Ville-Veikko Wettenhovi