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Year : 2005  |  Volume : 53  |  Issue : 1  |  Page : 73--77

Cerebral computed tomographic angiography scan delay in subarachnoid hemorrhage

1 Departments of Radiology, Kaunas University of Medicine, Lithuania
2 Departments of Neurosurgery, Kaunas University of Medicine, Lithuania

Correspondence Address:
Saulius Lukosevicius
Eiveniu St. 2, P. O. Box - 1010, Kaunas LT - 50009
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0028-3886.15063

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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.


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Online since 20th March '04
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