Cerebral computed tomographic angiography scan delay in subarachnoid hemorrhage
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Updated: Aug 18, 2026
Endovascular Perforation Model for Subarachnoid Hemorrhage Combined with Magnetic Resonance Imaging (MRI)
Published on: December 16, 2021
Saulius Lukosevicius1, Algidas Basevicius, Arimantas Tamasauskas
1Department of Radiology, Kaunas University of Medicine, Elveniu Street 2, PO Box-1010, Kaunas LT-50009, Lithuania. slu@delfi.lt
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.
