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Titolo:
What to expect from diffusion and perfusion MRI?
Autore:
Marsault, C; Oppenheim, C; Le Bihan, D;
Indirizzi:
Grp Hosp Pitie Salpetriere, F-75651 Paris 13, France Grp Hosp Pitie Salpetriere Paris France 13 ere, F-75651 Paris 13, France
Titolo Testata:
BULLETIN DE L ACADEMIE NATIONALE DE MEDECINE
fascicolo: 8, volume: 184, anno: 2000,
pagine: 1687 - 1701
SICI:
0001-4079(2000)184:8<1687:WTEFDA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
FRE
Soggetto:
POSITRON EMISSION TOMOGRAPHY; ACUTE STROKE; CEREBRAL INFARCTION; ISCHEMIC STROKE; SYMPTOM ONSET; WEIGHTED MR; BRAIN; CT; HEMORRHAGE; DIAGNOSIS;
Keywords:
brain, radiography; magnetic resonance imaging, methods; cerebral ischemia; cerebrovascular disorders, diagnosis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Marsault, C Grp Hosp Pitie Salpetriere, 47-83 Bld Hop, F-75651 Paris 13, France Grp Hosp Pitie Salpetriere 47-83 Bld Hop Paris France 13 ance
Citazione:
C. Marsault et al., "What to expect from diffusion and perfusion MRI?", B ACA N MED, 184(8), 2000, pp. 1687-1701

Abstract

Since 25 years, CT has the capability to recognize hemorrhagic infarcts inemergency: On the other hand, cytotoxic oedema is visible only 12 or 24 hours after the onset of the ischemic stroke T2 weighted MR-sequences are more sensitive and few hours after the onset, cytotoxic oedema appears as hypersignal, particularly using FLAIR sequences (Fluid Attenuated Inversion Recuperation). Described in 1986, diffusion-weighted MRI is a very sensitive technique to detect the cytotoxic oedema feu minutes after the onset. The attenuation of the apparent diffusion coefficient must be evaluated with a map. This attenuation appears as hypersignal and its sensibility is close than 100 %. The mismatch between data of perfusion MRI and diffusion MRI is the area of the ischemic penumbra. These new MRI techniques are easy to learnand must be available 24h a day and 7 days a week in the stroke centers. They are simple, rapid and highly accurate for the diagnosis of acute ischemic stroke. They could be useful to select candidates to aggressive therapy during the first 3 or 6 hours. Potentially, they improve patient's outcome.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 10:55:36