Spin-echo MR imaging of intracranial hemorrhage

Détails

ID Serval
serval:BIB_4545164036DF
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Spin-echo MR imaging of intracranial hemorrhage
Périodique
Neuroradiology
Auteur(s)
Dooms  G. C., Uske  A., Brant-Zawadzki  M., Kucharczyk  W., Lemme-Plaghos  L., Newton  T. H., Norman  D.
ISSN
0028-3940 (Print)
Statut éditorial
Publié
Date de publication
1986
Volume
28
Numéro
2
Pages
132-8
Notes
Dooms, G C
Uske, A
Brant-Zawadzki, M
Kucharczyk, W
Lemme-Plaghos, L
Newton, T H
Norman, D
Germany, west
Neuroradiology
Neuroradiology. 1986;28(2):132-8. --- Old uritopublisher value: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=3703235
Résumé
This retrospective study was performed to describe the appearance of intracranial hemorrhagic lesions on magnetic resonance (MR) imaging at 0.35 tesla using the spin-echo technique, and define the present clinical role of MRI in this particular pathology. Forty-eight examinations of forty-three patients with forty-seven intracranial hemorrhagic lesions (39 true hematomas and 8 hemorrhagic lesions mixed with other tissues) were reviewed for this study. Comparative CT studies were available for all the patients. In our limited experience with acute hematomas (less than 3 days old), low or isointense signal was seen with a short TR (0.5 s), but a relative increase in signal intensity was observed with a long TR (2.0 s). This appearance of acute hematoma was not specific. Chronic hematomas (more than 3 days old) were imaged as foci of bright signal intensity on both short and long TR. This pattern was characteristic of chronic hematoma. With a short TR (0.5 s), two hemorrhagic lesions (5 and 7 days old) were displayed as an isointense signal surrounded by a rim of high intensity signal. This peripheral zone most likely represented liquefaction at the clot's periphery and the initial formation of methemoglobin. T1 and T2 relaxation times were found to be very long for acute hematomas (first two days). T1 values of chronic hematomas (more than 3 days old) were comparatively short and in the same range as T1 of white matter. T2 values of chronic hematomas decreased also but remained very long.
Mots-clé
Acute Disease Adolescent Adult Aged Brain Neoplasms/complications Cerebral Hemorrhage/complications/*diagnosis/radiography Cerebral Infarction/complications Child Child, Preschool Chronic Disease Female Hematoma/diagnosis/radiography Humans Infant Infant, Newborn Magnetic Resonance Spectroscopy/*methods Male Middle Aged Retrospective Studies Tomography, X-Ray Computed
Pubmed
Web of science
Création de la notice
25/07/2008 11:54
Dernière modification de la notice
20/08/2019 14:50
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