Comparative Study Of CTA And DSA In Diagnosis Of Multiple Intracranial Aneurysms

Objective: Nowadays CT angiography is widely used in clinical affairs. The clinical value of CT angiography in diagnosis of single intracranial aneurysm can be compared to that of the digital subtraction angiography. However, whether DSA can be substituted by CTA in diagnosis of multiple intracranial aneurysms is unknown. The purpose of this study is to explore the clinical value of CT angiography in the diagnosis of multiple intracranial aneurysms.Methods: The data of CTA and DSA of 74 patients with multiple intracranial aneurysms from July 2011 to March 2015 were reviewed retrospectively.Results: 177 aneurysms were detected by DSA, and 175 aneurysms were detected by CTA. Among the aneurysms detected by CTA, 4 aneurysms were false positive, with the correct detection rate of CTA 96.6%. 165 aneurysms were in accordance with DSA, with the correct diagnostic rate of CTA 96.5%. CTA missed to diagnose 6 aneurysms and,misdiagnosed 10 aneurysms.Conclusion: The correct detection rate and diagnostic rate of CT angiography in multiple intracranial aneurysms is relatively high, but previous surgery, spasm of the vessels, the size and number of aneurysms, radiologists’ experience can influence the accuracy of CTA.when it comes to the usage of CTA to diagnosis multiple intracranial aneurysms, we should combine it with DSA to avoid the misdiagnosis and missed diagnosis.