The application of 16-slice spiral CT angiography in intracranial diseases

Objective:To study the value of 16-slice spiral CT angiography in the diagnosis of intracranial diseases.Methods : Forty-three patients with cerebral vascular diseases and intracranial tumors were examined with 16-slice spiral CT angiography.All the cases were performed with MPR、CPR、MIP、SSD、VR to show the vascular structure.We analyzed the cerebral arteries showed by CTA and compared with DSA and operation results.Results : In 43 cases,1～3 branches cerebral artery were all displayed.4 cases were normal,20 cerebral aneurysms,8 vascular malformation ,7 cerebral ischemia diseases,8 intracranial tumors were diagnosis by CTA.Twenty-one cases were examined by DSA,13 cases were proved by operation;The sensitivity of CTA was 92%(12 in 13) contrast to DSA in the diagnosis of cerebral aneurysms.CTA showed the aneurysm body,neck,feeding arteries clearly;CTA and operation were same in vascular malformation.Feeding arteries and draining veins in CTA and DSA were same in showing the position and the pattern of cerebral vascular abnormality.CTA displayed the size,location and the 3D relationship between tumor with near vessels and skull.Conclusion:16-slice spiral CTA is important in diagnosis of intracranial disease and show the 3D relationship between diseases and cerebral vascular.CTA is an effective technique in diagnosis of intracranial diseases.