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Jiri Jäntti

Jiri Jäntti

Grant-funded Researcher

Department of Technical Physics, Faculty of Science, Forestry and Technology

[email protected]

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Information Publications

In my current research, I utilize nanoparticles as contrast media for computed tomography imaging of cartilage. Unique diffusion characteristics of nanoparticles offer a novel approach for cartilage injury diagnostics.

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Research groups

Biophysics of Bone and Cartilage (BBC) 01.01.1998 -

Keywords

cartilage imaging computed tomography contrast agents medical imaging medical physics nanoparticles

Publications

24/24 items

Contrast‐Enhanced Computed Tomography for Structural and Functional Evaluation of Ligament Microdamage
Tsurayya, Afifah H; Jäntti, Jiri; Paakkari, Petri; Poimala, Milka; Snyder, Brian D; Grinstaff, Mark W; Honkanen, Miitu KM; Mertano, Heta; Ristaniemi, Aapo; Mäkelä, Janne TA, 2026, Journal of orthopaedic research, 44, 2, e70138. A1 Journal article (refereed), original research
Ultrasmall Surface-Charge-Modified Tantalum Oxide Nanoparticles for the Assessment of Articular Cartilage Using Contrast-Enhanced Computed Tomography
Jäntti, Jiri; Tuppurainen, Juuso; Joenathan, Anisha; Leskinen, Henri P P; Cagnoni, Annunzia M; Mertano, Heta; Poimala, Milka; Nippolainen, Ervin; Afara, Isaac O; Honkanen, Juuso T J; Matikka, Hanna; Töyräs, Juha; Snyder, Brian D; Stok, Kathryn S; Nelson, Brad B; Grinstaff, Mark W; Mäkelä, Janne T A, 2026, Acs nano, 20, 3, 2717-2729. A1 Journal article (refereed), original research
Dual-Contrast Agent with Nanoparticle and Molecular Components in Photon-Counting Computed Tomography: Assessing Articular Cartilage Health
Paakkari, Petri; Inkinen, Satu I; Jäntti, Jiri; Tuppurainen, Juuso; Fugazzola, Maria C; Joenathan, Anisha; Ylisiurua, Sampo; Nieminen, Miika T; Kröger, Heikki; Mikkonen, Santtu; van Weeren, René; Snyder, Brian D; Töyräs, Juha; Honkanen, Miitu KM; Matikka, Hanna; Grinstaff, Mark W; Honkanen, Juuso TJ; Mäkelä, Janne TA, 2025, Annals of biomedical engineering, 53, 6, 1423-1438. A1 Journal article (refereed), original research
Impact of Cationic Nanoparticles and a Neutral Contrast Agent on Articular Cartilage Biomechanics
Rissanen, Maria; Jäntti, Jiri; Tuppurainen, Juuso; Poimala, Milka; Snyder, Brian; Grinstaff, Mark; Mäkelä, Janne, 2025, Osteoarthritis and cartilage. Abstract
Machine Learning-Based Classification of Early Osteoarthritis Using Contrast-Enhanced Computed Tomography
Paakkari, Petri; Inkinen, Satu I.; Jäntti, Jiri; Tuppurainen, Juuso; Nurmirinta, Teemu A.; Nieminen, Miika T.; van Weeren, René; Snyder, Brian; Töyräs, Juha; Honkanen, Miitu; Grinstaff, Mark; Tanska, Petri; Mäkelä, Janne; Honkanen, Juuso T., 2025, Osteoarthritis and cartilage. Abstract
Orientation-Independent T2 Mapping Enhances MRI-Based Cartilage Characterization
Leskinen, Henri P P; Tuppurainen, Juuso; Jäntti, Jiri; Mäkelä, Janne T A; Nippolainen, Ervin; Afara, Isaac O; Töyräs, Juha; Nykänen, Olli; Nissi, Mikko J, 2025, Annals of biomedical engineering, 53, 9, 2120-2130. A1 Journal article (refereed), original research
Structural and Functional Assessment of Ligaments Using Contrast-Enhanced Micro-Computed Tomography
Tsurayya, Afifah H; Jäntti, Jiri; Paakkari, Petri; Poimala, Milka; Snyder, Brian; Grinstaff, Mark; Honkanen, Miitu; Orava, Heta; Ristaniemi, Aapo; Mäkelä, Janne, 2025, Osteoarthritis and cartilage. Poster
Ultrasmall “Sugar-Metal” Nanoparticle for Cartilage Computed Tomography Imaging
Poimala, Milka; Jäntti, Jiri; DeMoya, Christian; Honkanen, Miitu; Snyder, Brian; Grinstaff, Mark; Mäkelä, Janne, 2025, Osteoarthritis and cartilage. Abstract
Comparison of site-specific tensile, compressive, and friction properties of human tibiofemoral joint cartilage and their relationship to degeneration
Ristaniemi, Aapo; Tuppurainen, Juuso; Jäntti, Jiri; Nippolainen, Ervin; Afara, Isaac O; Mononen, Mika E; Korhonen, Rami K; Mäkelä, Janne TA, 2024, Journal of biomechanics, 177, 112386. A1 Journal article (refereed), original research
Controlled synthesis and characterization of porous silicon nanoparticles for dynamic nuclear polarization
von Witte, Gevin; Himmler, Aaron; Hyppönen, Viivi; Jäntti, Jiri; Albannay, Mohammed M; Moilanen, Jani O; Ernst, Matthias; Lehto, Vesa-Pekka; Riikonen, Joakim; Kozerke, Sebastian; Kettunen, Mikko I; Tamarov, Konstantin, 2024, Nanoscale, 16, 41, 19385-19399. A1 Journal article (refereed), original research
Raman Spectra Predict the Composition, Structure, and Viscoelastic Properties of Articular Cartilage
Kazemi, Masumeh; Tuppurainen, Juuso; Jäntti, Jiri; Yu, Chenhao; Fugazzola, Maria; Van Weeren, René; Grinstaff, Mark W; Snyder, Brian D; Bergholt, Mads S; Mäkelä, Janne; Albro, Michael B, 2024, Transactions of the annual meeting of the Orthopaedic Research Society. Abstract
Revealing Detailed Cartilage Function Through Nanoparticle Diffusion Imaging: A Computed Tomography & Finite Element Study
Tuppurainen, Juuso; Paakkari, Petri; Jäntti, Jiri; Nissinen, Mikko T. Fugazzola, Maria C; van Weeren, René; Ylisiurua, Sampo; Nieminen, Miika T; Kröger, Heikki; Snyder, Brian D; Joenathan, Anisha; Grinstaff, Mark W; Matikka, Hanna; Korhonen, Rami K; Mäkelä, Janne TA, 2024, Annals of biomedical engineering, 52, 9, 2584-2595. A1 Journal article (refereed), original research
Tantalum Oxide Nanoparticles Reveal Proteoglycan Content of Human Articular Cartilage and Enable Detection of Superficial Lesions in Computed Tomography
Jäntti, Jiri; Joenathan, Anisha; Honkanen, Juuso, T.J.; Töyräs, Juha; Matikka, Hanna; Snyder, Brian, D.; Grinstaff, Mark, W; Mäkelä, Janne, T.A., 2024. Abstract
Articular Cartilage Characterization Using Tantalum and Iodine-based Dual-Contrast Photon-Counting Computed Tomography
Paakkari, Petri; Inkinen, Satu; Jäntti, Jiri; Tuppurainen, Juuso; Fugazzola, Maria; Joenathan, Anisha; Ylisiurua, Sampo; Nieminen, Miika; Grinstaff, Mark; Kröger, Heikki; Töyräs, Juha; Honkanen, Juuso; Mäkelä, Janne, 2023, Transactions of the annual meeting of the Orthopaedic Research Society. Abstract
Cationic tantalum oxide nanoparticle contrast agent for micro computed tomography reveals articular cartilage proteoglycan distribution and collagen architecture alterations
Jäntti, Jiri; Joenathan, Anisha; Fugazzola, Maria; Tuppurainen, Juuso; Honkanen, Juuso TJ; Töyräs, Juha; van Weeren, René; Snyder, Brian D; Grinstaff, Mark W; Matikka, Hanna; Mäkelä, Janne TA, 2023, Osteoarthritis and cartilage, 32, 3, 299-309. A1 Journal article (refereed), original research
Composition, architecture and biomechanical properties of articular cartilage in differently loaded areas of the equine stifle
Fugazzola, Maria; Nissinen, Mikko T; Jäntti, Jiri; Tuppurainen, Juuso; Plomp, Saskia; Te Moller, Nikae; Mäkelä, Janne TA; van Weeren, Rene, 2023, Equine veterinary journal, 56, 3, 573-585. A1 Journal article (refereed), original research
Contrast Agent Diffusion Reflects Biomechanical Finite Element Model Properties Of Articular Cartilage
Tuppurainen, J; Jäntti, J; Nissinen, MT; Fugazzola, MC; van Weeren, R; Joenathan, A; Grinstaff, MW; Matikka, H; Korhonen, RK; Mäkelä, JT, 2023, Osteoarthritis and cartilage. Abstract
Effect Of Depth-dependent Variation In Articular Cartilage Composition On Nanoparticle Diffusion
Jäntti, Jiri; Joenathan, Anisha; Fugazzola, Maria C; van Weeren, René; Synder, Brian D; Grinstaff, Mark W; Töyräs, Juha; Matikka, Hanna; Mäkelä, Janne TA, 2023, Transactions of the annual meeting of the Orthopaedic Research Society. Abstract
Tantalum And Iodine Based Dual-Contrast Photon-Counting Computed Tomography Method For Assessment Of Articular Cartilage Composition
Paakkari, P; Inkinen, SI; Jäntti, J; Tuppurainen, J; Fugazzola, MC; Joenathan, A; Ylisiurua, S; Nieminen, MT; Grinstaff, MW; Kröger, H; Töyräs, J; Honkanen, JT; Mäkelä, JT, 2023, Osteoarthritis and cartilage. Abstract
Tantalum Oxide Nanoparticles For Contrast-Enhanced Computed Tomography Diagnosis Of Osteoarthritis
Jäntti, J; Joenathan, A; Honkanen, JT; Snyder, BD; Töyräs, J; Grinstaff, MW; Matikka, H; Mäkelä, JT, 2023, Osteoarthritis and cartilage. Abstract
Triple contrast computed tomography reveals site‐specific biomechanical differences in human knee joint – a proof of concept study
Orava, Heta; Paakkari, Petri; Jäntti, Jiri; Honkanen, Miitu KM; Honkanen, Juuso TJ; Virén, Tuomas; Joenathan, Anisha; Tanska, Petri; Korhonen, Rami K; Grinstaff, Mark W; Töyräs, Juha; Mäkelä, Janne TA, 2023, Journal of orthopaedic research, 42, 2, 415-424. A1 Journal article (refereed), original research
Effect of doping on the dynamic nuclear polarization of porous silicon nanoparticles
Tamarov, K.; von Witte, G.; Hyppönen, V.; Jäntti, J.; Himmler, A.; Albannay, M.; Ernst, M.; Kozerke, S.; Lehto, V.-P.; Riikonen, J.; Kettunen, M. I.;, 2022. Abstract
TOMOLAB : Röntgentomografialaboratorion kehittäminen alueen uudistuvan TKIO-toiminnan tueksi. Hankkeen loppuraportti
Jäntti, Jiri; Koistinen, Arto; Paakkari, Petri; Silvast, Tuomo; Tomppo, Laura; Tuomainen, Teemu; Hietaniemi, Veli; Hiltunen, Lea; Himanen, Katri; Jalli, Marja; Karhu, Jouni; Pihlava, Juha-Matti; Välimaa, Anna-Liisa; Alonen, Antti; Alonen, Lauri; Taskanen, Ari; Miettinen, Hannu; Räsänen, Miika; Saastamoinen, Jukka; Iso-Mustajärvi, Matti, 2022, Savonia-ammattikorkeakoulu. D4 Published development or research report or study
Tantalum Oxide Nanoparticles for Contrast Enhanced Computed Tomography Imaging of Cartilage
Jäntti, J; Joenathan, A; Fugazzola, M; van Weeren, R; Synder, BD; Grinstaff, MW; Töyräs, J; Matikka, H; Mäkelä, JT, 2022, Osteoarthritis and cartilage. Abstract

University of Eastern Finland Joensuu, Kuopio © University of Eastern Finland

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Jiri Jäntti

Research groups

Keywords

Contrast‐Enhanced Computed Tomography for Structural and Functional Evaluation of Ligament Microdamage

Ultrasmall Surface-Charge-Modified Tantalum Oxide Nanoparticles for the Assessment of Articular Cartilage Using Contrast-Enhanced Computed Tomography

Dual-Contrast Agent with Nanoparticle and Molecular Components in Photon-Counting Computed Tomography: Assessing Articular Cartilage Health

Impact of Cationic Nanoparticles and a Neutral Contrast Agent on Articular Cartilage Biomechanics

Machine Learning-Based Classification of Early Osteoarthritis Using Contrast-Enhanced Computed Tomography

Orientation-Independent T2 Mapping Enhances MRI-Based Cartilage Characterization

Structural and Functional Assessment of Ligaments Using Contrast-Enhanced Micro-Computed Tomography

Ultrasmall “Sugar-Metal” Nanoparticle for Cartilage Computed Tomography Imaging

Comparison of site-specific tensile, compressive, and friction properties of human tibiofemoral joint cartilage and their relationship to degeneration

Controlled synthesis and characterization of porous silicon nanoparticles for dynamic nuclear polarization

Raman Spectra Predict the Composition, Structure, and Viscoelastic Properties of Articular Cartilage

Revealing Detailed Cartilage Function Through Nanoparticle Diffusion Imaging: A Computed Tomography & Finite Element Study

Tantalum Oxide Nanoparticles Reveal Proteoglycan Content of Human Articular Cartilage and Enable Detection of Superficial Lesions in Computed Tomography

Articular Cartilage Characterization Using Tantalum and Iodine-based Dual-Contrast Photon-Counting Computed Tomography

Cationic tantalum oxide nanoparticle contrast agent for micro computed tomography reveals articular cartilage proteoglycan distribution and collagen architecture alterations

Composition, architecture and biomechanical properties of articular cartilage in differently loaded areas of the equine stifle

Contrast Agent Diffusion Reflects Biomechanical Finite Element Model Properties Of Articular Cartilage

Effect Of Depth-dependent Variation In Articular Cartilage Composition On Nanoparticle Diffusion

Tantalum And Iodine Based Dual-Contrast Photon-Counting Computed Tomography Method For Assessment Of Articular Cartilage Composition

Tantalum Oxide Nanoparticles For Contrast-Enhanced Computed Tomography Diagnosis Of Osteoarthritis

Triple contrast computed tomography reveals site‐specific biomechanical differences in human knee joint – a proof of concept study

Effect of doping on the dynamic nuclear polarization of porous silicon nanoparticles

TOMOLAB : Röntgentomografialaboratorion kehittäminen alueen uudistuvan TKIO-toiminnan tueksi. Hankkeen loppuraportti

Tantalum Oxide Nanoparticles for Contrast Enhanced Computed Tomography Imaging of Cartilage