Abstract:
CONTEXT:Computed tomographic angiography (CTA) is widely applied in the evaluation of cerebral vessels. Contrast enhancement in cerebral CTA without care or test bolus is not always sufficient for high-quality images. AIMS:Evaluation of the possibilities of calculation of scan delay for cerebral CTA in case of subarachnoid hemorrhage (SAH), based on clinical data of a patient and to find out prognostic error of the model. SETTINGS AND DESIGN:Prospective study in Neurosurgery and Radiology departments. MATERIALS AND METHODS:Scan delay in 53 patients suffering an acute SAH was measured employing test bolus technique. Cerebral CTA was performed afterwards. STATISTICAL ANALYSIS USED:SPSS for Windows v.10.1 software package was applied for dispersion analysis, including one-sample Kolmogorov-Smirnov's test and Levene's Test of Equality of Error Variances. RESULTS:A statistical model for the prediction of scan delay in SAH was developed. Cerebral CTA scan delay was dependent upon age, neurological status and impact of the latter factors together (P< 0.05). The determined mean square error of prognosis of scan delay of the developed model equals 3.3 sec. CONCLUSION:Using our proposed model it is possible to estimate an optimal delay time for CTA in most patients with SAH with a determined error.
journal_name
Neurol Indiajournal_title
Neurology Indiaauthors
Lukosevicius S,Basevicius A,Tamasauskas Adoi
10.4103/0028-3886.15063subject
Has Abstractpub_date
2005-03-01 00:00:00pages
73-7; discussion 77-8issue
1eissn
0028-3886issn
1998-4022journal_volume
53pub_type
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