Freddy Ståhlberg
Expert
Radiological diagnosis of acute stroke. Comparison of conventional MR imaging, echo-planar diffusion-weighted imaging, and spin-echo diffusion-weighted imaging
Författare
Summary, in English
PURPOSE: To compare conventional MR imaging, echo-planar diffusion-weighted imaging (EP-DWI) and spin-echo diffusion-weighted imaging (SE)-DWI at radiological diagnosis of acute stroke. MATERIAL AND METHODS: Twenty-seven patients (30-85 years old) were examined. Clinical examination was performed before MR imaging. All MR examinations were assessed by an experienced neuroradiologist blinded to clinical findings. RESULTS: In EP-DWI, every patient had a lesion corresponding to the clinical findings. EP-DWI was used as the gold standard. In conventional PD+T2 imaging, 23/59 focal lesions were interpreted as acute, which was false in 11 lesions, and 36/59 lesions were considered to be old, 6 were in fact acute. Nine acute lesions were only detected retrospectively and 12 acute lesions were not detected at all on PD+T2. SE-DWI including the apparent diffusion coefficient correlated fairly well with EP-DWI but the procedure was impractical. CONCLUSION: EP-DWI is reliable for diagnosis of early ischemic stroke, while SE-DWI performs reasonably well. Conventional PD+T2 imaging is not reliable for diagnosis of early ischemia.
Avdelning/ar
- Diagnostisk radiologi, Lund
- Medicinsk strålningsfysik, Lund
- Neurologi, Lund
Publiceringsår
1999
Språk
Engelska
Sidor
255-262
Publikation/Tidskrift/Serie
Acta Radiologica
Volym
40
Issue
3
Dokumenttyp
Artikel i tidskrift
Förlag
SAGE Publications
Ämne
- Radiology, Nuclear Medicine and Medical Imaging
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1600-0455