Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Jarmo, Teuho"'
Autor:
Reetta Siekkinen, Heidi Partanen, Linda Kukola, Tuula Tolvanen, Andrew Fenwick, Nadia A. S. Smith, Mika Teräs, Antti Saraste, Jarmo Teuho
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-17 (2024)
Abstract Background Several factors may decrease the accuracy of quantitative PET myocardial perfusion imaging (MPI). It is therefore essential to ensure that myocardial blood flow (MBF) values are reproducible and accurate, and to design systematic
Externí odkaz:
https://doaj.org/article/ef13705e570442a5bcd7087fbe4fc019
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Research on different machine learning (ML) has become incredibly popular during the past few decades. However, for some researchers not familiar with statistics, it might be difficult to understand how to evaluate the performance of ML mode
Externí odkaz:
https://doaj.org/article/87f441491fdb43b289195ea8b7f86add
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/87c9ac0b475d44fbade65000381a90ff
Autor:
Maxwell W. G. Miner, Heidi Liljenbäck, Jenni Virta, Salli Kärnä, Riikka Viitanen, Petri Elo, Maria Gardberg, Jarmo Teuho, Piritta Saipa, Johan Rajander, Hasan Mansour A Mansour, Nathan A. Cleveland, Philip S. Low, Xiang-Guo Li, Anne Roivainen
Publikováno v:
Frontiers in Immunology, Vol 14 (2023)
IntroductionNon-invasive imaging techniques such as positron emission tomography (PET) are extremely important for cancer detection and characterization especially for difficult to biopsy or extremely delicate organs such as the brain. The folate ana
Externí odkaz:
https://doaj.org/article/9d40fb1ffac1438f88d17102de90bf4e
Publikováno v:
BMC Medical Imaging, Vol 22, Iss 1, Pp 1-14 (2022)
Abstract Background Attenuation correction is crucial in quantitative positron emission tomography-magnetic resonance (PET-MRI) imaging. We evaluated three methods to improve the segmentation and modelling of the attenuation coefficients in the nasal
Externí odkaz:
https://doaj.org/article/d4913f35b3654077970ff87ce8314a84
Autor:
Jarmo Teuho, Jussi Schultz, Riku Klén, Juhani Knuuti, Antti Saraste, Naoaki Ono, Shigehiko Kanaya
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract We implemented a two-dimensional convolutional neural network (CNN) for classification of polar maps extracted from Carimas (Turku PET Centre, Finland) software used for myocardial perfusion analysis. 138 polar maps from 15O–H2O stress per
Externí odkaz:
https://doaj.org/article/d0018c3527c848469a7b685159dba5ab
Autor:
Joaquin Rives Gambin, Mojtaba Jafari Tadi, Jarmo Teuho, Riku Klen, Juhani Knuuti, Juho Koskinen, Antti Saraste, Eero Lehtonen
Publikováno v:
IEEE Access, Vol 9, Pp 145886-145899 (2021)
Noise and motion artifacts in Positron emission tomography (PET) scans can interfere in diagnosis and result in inaccurate interpretations. PET gating techniques effectively reduce motion blurring, but at the cost of increasing noise, as only a subse
Externí odkaz:
https://doaj.org/article/87d45d98558b4db5860c45ce41bcaf51
Autor:
Jarmo Teuho, Leon Riehakainen, Aake Honkaniemi, Olli Moisio, Chunlei Han, Marko Tirri, Shihao Liu, Tove J. Grönroos, Jie Liu, Lin Wan, Xiao Liang, Yiqing Ling, Yuexuan Hua, Anne Roivainen, Juhani Knuuti, Qingguo Xie, Mika Teräs, Nicola D’Ascenzo, Riku Klén
Publikováno v:
EJNMMI Research, Vol 10, Iss 1, Pp 1-17 (2020)
Abstract Background We investigated the image quality of 11C, 68Ga, 18F and 89Zr, which have different positron fractions, physical half-lifes and positron ranges. Three small animal positron emission tomography/computed tomography (PET/CT) systems w
Externí odkaz:
https://doaj.org/article/2b1021afa00e4f7398647b1a53ae1bfd
Autor:
Johanna Päivärinta, Kaj Metsärinne, Eliisa Löyttyniemi, Jarmo Teuho, Tuula Tolvanen, Juhani Knuuti, Niina Koivuviita
Publikováno v:
EJNMMI Research, Vol 10, Iss 1, Pp 1-7 (2020)
Abstract Background Chronic kidney disease (CKD) is associated with endothelial dysfunction and increased cardiovascular mortality. Endothelial dysfunction can be studied measuring myocardial perfusion reserve (MPR). MPR is the ratio of stress and re
Externí odkaz:
https://doaj.org/article/07abc0f547714ae099b0348ee6b61a5d
Autor:
Petri Elo, Xiang-Guo Li, Heidi Liljenbäck, Semi Helin, Jarmo Teuho, Kalle Koskensalo, Virva Saunavaara, Päivi Marjamäki, Vesa Oikonen, Jenni Virta, Qingshou Chen, Philip S. Low, Juhani Knuuti, Sirpa Jalkanen, Laura Airas, Anne Roivainen
Publikováno v:
Journal of Neuroinflammation, Vol 16, Iss 1, Pp 1-18 (2019)
Abstract Background Folate receptor-β (FR-β) is a cell surface receptor that is significantly upregulated on activated macrophages during inflammation and provides a potential target for folate-based therapeutic and diagnostic agents. FR-β express
Externí odkaz:
https://doaj.org/article/fd311c450a324abdaa5010215edd495c