CT in acute stroke : improved detection of dense intracranial arteries by varying window parameters and performing a thin-slice helical scan
Articolo
Data di Pubblicazione:
2002
Citazione:
CT in acute stroke : improved detection of dense intracranial arteries by varying window parameters and performing a thin-slice helical scan / D. Gadda, L. Vannucchi, F. Niccolai, A. Neri, L. Carmignani, P. Pacini. - In: NEURORADIOLOGY. - ISSN 0028-3940. - 44:11(2002 Nov), pp. 900-906.
Abstract:
We evaluated the possibility of improving detection of a dense intracranial artery on CT in acute stroke by narrowing window width, varying window level and performing a thin-slice helical scan for the circle of Willis, in some cases followed by postprocessing maximum-intensity projections. We carried out 32 examinations of 31 patients with a documented cerebral ischaemic attack, performing cranial CT within 6 h of the onset of symptoms. Patients with intracranial haemorrhage were excluded, as were patients who went on to thrombolytic therapy. Varying window width and centre level on standard 5 mm thick contiguous axial slices, we detected a dense proximal middle cerebral artery (MCA) in a higher proportion of patients. A 1.1 mm thick helical scan through the circle of Willis improved recognition of a dense distal horizontal segment and the temporoinsular branches of the MCA and of a dense posterior cerebral artery.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Aged ; Aged, 80 and over ; Circle of Willis ; Female ; Humans ; Image Processing, Computer-Assisted ; Male ; Middle Aged ; Middle Cerebral Artery ; Stroke ; Tomography, X-Ray Computed
Elenco autori:
D. Gadda, L. Vannucchi, F. Niccolai, A. Neri, L. Carmignani, P. Pacini
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