Výsledky vyhledávání - "Jussi Perkiö"

Detecting the subregion proceeding to infarction in hypoperfused cerebral tissue: a study with diffusion and perfusion weighted MRI

Autor: Jussi Perkiö, Pauli Vainio, Ritva Vanninen, Jari O. Karonen, Yawu Liu, Juho Nuutinen, Seppo Soimakallio, Hannu J. Aronen

Publikováno v: Neuroradiology. 45:345-351

Diffusion and perfusion weighted MRI have been widely used in ischaemic stroke. We studied 17 patients in whom ischaemic areas showed an ischaemic core, an area of infarct growth and hypoperfused but ultimately surviving tissue. Apparent diffusion co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b361d249223cbc0571504273d30e25b5
https://doi.org/10.1007/s00234-003-0959-3

Zobrazit plný text záznamu

Evaluation of four postprocessing methods for determination of cerebral blood volume and mean transit time by dynamic susceptibility contrast imaging

Autor: Jussi Perkiö, Hannu J. Aronen, Leif Østergaard, Sauli Savolainen, Yawu Liu, Jari O. Karonen, Aki Kangasmäki

Publikováno v: Magnetic Resonance in Medicine. 47:973-981

Four different postprocessing methods to determine cerebral blood volume (CBV) and contrast agent mean transit time (MTT) by dynamic susceptibility contrast (DSC) MRI were compared. CBV was determined by two different methods that integrate tracer co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2badfe1fe38ef5d3500d9521c496e041
https://doi.org/10.1002/mrm.10126

Zobrazit plný text záznamu

Perfusion-Weighted MRI in Human Acute Ischemic Stroke

Autor: Jussi Perkiö, Ritva Vanninen, Seppo Soimakallio, Yawu Liu, Esko Vanninen, Hannu J. Aronen, Jari O. Karonen, Jyrki T. Kuikka, Leif Østergaard, Mervi Könönen

Publikováno v: Academic Radiology. 9:S160-S164

Ischemic stroke is a major cause of death and disability of elderly people in developed countries. Thrombolysis with recombinant tissue plasminogen activator (rt-PA) is the only FDA-approved treatment for acute ischemic stroke. However, it has been p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dfcfe9f248b1fd0754c7752fc07471f6
https://doi.org/10.1016/s1076-6332(03)80427-0

Zobrazit plný text záznamu

Abnormal intravoxel cerebral blood flow heterogeneity in human ischemic stroke determined by dynamic susceptibility contrast magnetic resonance imaging

Autor: Lauri Soinne, Aki Kangasmäki, Johanna Helenius, Sauli Savolainen, Oili Salonen, Jussi Perkiö, Turgut Tatlisumak, Hannu J. Aronen, Markku Kaste, Leif Østergaard, S. Martinkauppi

Publikováno v: Perkiö, J, Soinne, L, Østergaard, L, Helenius, J, Kangasmäki, A, Martinkauppi, S, Salonen, O, Savolainen, S, Kaste, M, Tatlisumak, T & Aronen, H J 2005, ' Abnormal intravoxel cerebral blood flow heterogeneity in human ischemic stroke determined by dynamic susceptibility contrast magnetic resonance imaging ', Stroke; a journal of cerebral circulation, vol. 36, no. 1, pp. 44-9 . https://doi.org/10.1161/01.STR.0000150495.96471.95

Background and Purpose— The determination of cerebral blood flow heterogeneity (FH) by dynamic susceptibility contrast (DSC) magnetic resonance imaging has recently been proposed as a tool to predict final infarct size in acute stroke. In this stud

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cfd049f2ee7babd489214b060b62cfd
https://pure.au.dk/portal/da/publications/abnormal-intravoxel-cerebral-blood-flow-heterogeneity-in-human-ischemic-stroke-determined-by-dynamic-susceptibility-contrast-magnetic-resonance-imaging(8d1676f0-fb2e-11dd-8f9a-000ea68e967b).html

Zobrazit plný text záznamu

Study of the relative dose-response of BANG-3 polymer gel dosimeters in epithermal neutron irradiation

Autor: Tiina Seppälä, U. Abo Ramadan, Sami Heikkinen, Iiro Auterinen, Jussi Perkiö, Tom Serén, Sauli Savolainen, Aki Kangasmäki, Johanna Karila, Petri Kotiluoto, Jouni Uusi-Simola, P. Sorvari

Publikováno v: University of Helsinki
Uusi-Simola, J, Savolainen, S, Kangasmäki, A, Heikkinen, S, Perkiö, J, Abo Ramadan, U, Seppälä, T, Karila, J, Serén, T, Kotiluoto, P, Sorvari, P & Auterinen, I 2003, ' Study of the relative dose-response of BANG-3® polymer gel dosimeters in epithermal neutron irradiation ', Physics in Medicine and Biology, vol. 48, no. 17, pp. 2895-2906 . https://doi.org/10.1088/0031-9155/48/17/310

Polymer gels have been reported as a new, potential tool for dosimetry in mixed neutron-gamma radiation fields. In this work, BANG-3 (MGS Research Inc.) gel vials from three production batches were irradiated with 6 MV photons of a Varian Clinac 2100

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb7aa6ccae842e4f040d58d0268ae21d
https://pubmed.ncbi.nlm.nih.gov/14516107

Zobrazit plný text záznamu

Dynamic susceptibility contrast MRI of gliomas

Autor: Hannu J. Aronen, Jussi Perkiö

Publikováno v: Neuroimaging clinics of North America. 12(4)

Dynamic susceptibility contrast imaging has proven to be useful in brain tumor studies, and it provides additional information on tumor characteristics based on the microvascular structure of gliomas. The cerebral blood volume maps can be used to non

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::517695b5bab63ac4c97d96b593fde2cb
https://pubmed.ncbi.nlm.nih.gov/12687908

Zobrazit plný text záznamu

Cerebral hemodynamics in a healthy population measured by dynamic susceptibility contrast MR imaging

Autor: Lauri Soinne, Oili Salonen, Markku Kaste, Sauli Savolainen, Turgut Tatlisumak, Leif Østergaard, Jussi Perkiö, Hannu J. Aronen, Richard A. D. Carano, Johanna Helenius

Publikováno v: Helenius, J, Perkio, J, Soinne, L, Østergaard, L, Carano, R A, Salonen, O, Savolainen, S, Kaste, M, Aronen, H J & Tatlisumak, T 2003, ' Cerebral hemodynamics in a healthy population measured by dynamic susceptibility contrast MR imaging ', Acta Radiologica, vol. 44, pp. 538-546 .

Purpose: To establish reference data and to study age-dependency for cerebral perfusion in various regions of the brain in a healthy population. Material and Methods: Eighty healthy subjects of both genders from 22 to 85 years of age were studied wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f44724d95f1d8686b2e292f827a2fbf
https://pure.au.dk/portal/da/publications/cerebral-hemodynamics-in-a-healthy-population-measured-by-dynamic-susceptibility-contrast-mr-imaging(5fc8c350-9561-11da-bee9-02004c4f4f50).html

Zobrazit plný text záznamu

Evaluation of four postprocessing methods for determination of cerebral blood volume and mean transit time by dynamic susceptibility contrast imaging

Autor: Jussi, Perkiö, Hannu J, Aronen, Aki, Kangasmäki, Yawu, Liu, Jari, Karonen, Sauli, Savolainen, Leif, Østergaard

Publikováno v: Magnetic resonance in medicine. 47(5)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::6ae8963743fd887a3f2cfedd47bd3646
https://pubmed.ncbi.nlm.nih.gov/11979577

Zobrazit plný text záznamu

Diffusion-weighted MR imaging in normal human brains in various age groups

Autor: Johanna, Helenius, Lauri, Soinne, Jussi, Perkiö, Oili, Salonen, Aki, Kangasmäki, Markku, Kaste, Richard A D, Carano, Hannu J, Aronen, Turgut, Tatlisumak

Publikováno v: AJNR Am J Neuroradiol

BACKGROUND AND PURPOSE: Few studies have concerned the absolute apparent diffusion coefficient (ADC) values in the normal human brain and the effect of aging on diffusion. Therefore, our purpose was to determine whether the average ADC (ADC(av)) valu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::285fcff2744f4b45a75e8e1bfd319bfd
https://pubmed.ncbi.nlm.nih.gov/11847041

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání