320-detector row CT angiography in diagnosis of cerebral arteriovenous malformation with hemorrhage

Objective To explore the value of 320-row detector CTA in the diagnosis of cerebral arteriovenous malformation(AVM) with hemorrhage.Methods All 45 patients with cerebral AVM diagnosed by histopathology and(or) DSA were enrolled.320-row detector CTA were performed on all patients using dynamic volume scan mode.Arterial subtraction data and venous subtraction data were acquired with sub/add software.Virtual images of cerebral arteries and veins were obtained with VR and MIP.The original and reconstruction images were retrospectively analyzed.Twenty-one patients underwent both CTA and DSA.The amount of feeding arteries and draining veins on CTA and DSA were analyzed statistically.Results Cerebral AVM was revealed in 44 patients by CTA,including 39 cases located supratentorially(the most located in temporal lobe,then in parietal lobe) and 5 located infra-tentorially in the cerebellum.One case of AVM was missed by CTA.The cerebral hematoma was demonstrated in 41 cases and subarachnoid hemorrhage in 4 cases.Single feeding artery was found in 37 cases,while dual feeding arteries were detected in 7 cases.There were superficial venous drainage in 29 cases and deep venous drainage in 15 cases.No significant difference between CTA and DSA in displaying of intracranial AVM's feeding arteries and draining veins was found(P0.05).Conclusion 320-row detector CTA has potential to serve as a safe,accurate and preferred examination for cerebral AVM with hemorrhage.