| Autor: |
Bryan, R N, Levy, L M, Whitlow, W D, Killian, J M, Preziosi, T J, Rosario, J A |
| Jazyk: |
angličtina |
| Rok vydání: |
1991 |
| Předmět: |
|
| Zdroj: |
AJNR Am J Neuroradiol |
| Popis: |
The appearance of acute cerebral infarction was evaluated on MR images and CT scans obtained in 31 patients within 24 hr of the ictus; follow-up examinations were performed 7-10 days later in 20 of these patients and were correlated with the initial studies. Acute infarcts were visible more frequently on MR images than on CT scans (82% vs 58%). Proton density- and T2-weighted scans usually demonstrated regions of hyperintensity corresponding to acute infarcts, but proton density-weighted scans often showed better definition of the lesion in terms of regional anatomy. Follow-up MR images and CT scans identified approximately 88% of subacute strokes, 54% of which were better defined and/or larger than on the initial examination. In 20% of lesions, "hemorrhagic" characteristics were seen on at least one examination. CT and MR imaging were comparable in delineating acute hemorrhage, but MR detected more cases with evidence of hemorrhage on follow-up examinations. MR appears to be more sensitive than CT in the imaging of acute stroke. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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