Abstract:
BACKGROUND:Diffusion-weighted MRI (DWI) and perfusion-weighted MRI (PWI) are new techniques that can be used for the evaluation of acute ischemic stroke. However, their potential role in the management of patients treated with recombinant tissue plasminogen activator (rtPA) has yet to be determined. CASE DESCRIPTION:The authors present the case of a 73-year-old man who was treated with intra-arterial rtPA, and they compare findings on DWI and PWI scans with angiography. PWI revealed decreased cerebral perfusion corresponding to an area that was not successfully recanalized, but revealed no abnormality in regions in which blood flow was restored. DWI was unremarkable in the region that was reperfused early (3 hours) but revealed hyperintensity in an area that was reperfused 3. 5 hours after symptom onset and in the area that was not reperfused. CONCLUSIONS:Findings on PWI correlated well with angiography, and DWI detected injured tissue in the hyperacute stage, whereas conventional MRI findings were negative. This suggests that these techniques may be useful to noninvasively evaluate the success of thrombolytic therapy.
journal_name
Strokejournal_title
Strokeauthors
Lansberg MG,Tong DC,Norbash AM,Yenari MA,Moseley MEdoi
10.1161/01.str.30.3.678subject
Has Abstractpub_date
1999-03-01 00:00:00pages
678-80issue
3eissn
0039-2499issn
1524-4628journal_volume
30pub_type
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