Preliminary evaluating the value of three dimensional computed tomographic angiography in diagnosis of the morphology of intracranial arteriovenous malformations

Objective To assess the value of three dimensional computed tomographic angiography (3D CTA) which used in the diagnosis of the morphotogy of intracranial arteriovenous malformations(AVMs). Methods A prospective evaluation within 2 years included 23 patients suspected of intracranial AVMs. All the patients underwent 3D CTA and digital subtraction angiography (DSA). Results The 3D CTA imaging provided excellent visualization of the intracranial AVMs. The false positive error and false negative error were not found. The details of arterial supply, size and location, which provided by 3D CTA images were exactly as the same as that in DSA, and the details of venous drainage were approxiamte match. Moreover, 3D CTA can provide a 3 D anatomy of AVMs and the relationship with adjacent structures, which can assist the surgeon to possible intropperative design. As a non invasive technique, there was no related complication . Conclusions 3D CTA provide similar 2 D images compare to images of DSA. Furthermore, it also supplies several advantages over DSA, in addition to reduced costs and avoidance of related complications. Preliminary data suggest that 3D CTA can partial replace catheter angiography inthe assessment of patients with intracranial AVMs. Although no firm conclusions or generalizations can be drawn from this limit cohort of patients, it is hoped that this report will stimulate interest and further study in both regions of technique and clinic.