Application Of Multislice Computed Tomography Angiography In The Diagnosis And Postoperative Evaluation Of Intracranial Aneurysms

Objective: To evaluate the application of multislice spiral computed tomography angiography (MSCTA) in the diagnosis and postoperative evaluation of intracranial aneurysms .Methods: From 2007.03 to 2008.11 , 62 patients who were diagnosed with intracranial aneurysm in the neurosurgery department of Affiliated Hospital of Luzhou Medical College were collected . A way of marking intravenous bolus non-ionic contrast medium(Iohexol) was used to do MSCTA examination .All images were processed with GE's AW4.3 software in the Sun independent workstation .Observations were done to define the position ,shape and size of intracranial aneurysm , the relation of neck , parent artery and skull base , to make a comparison of the conditions before and during the operation to see whether they coincided with each other . 28 patients reexamined to define postoperative outcomes to see whether parent artery were clear or not, and any residual aneurysms remained.Results: 62 patients were confirmed diagnosed with intracranial aneurysm through MSCTA and DSA examination , including 66 aneurysms , 4 multiple aneurysms . 32 patients had operations solely based on the MSCTA examination results and 43 patients had direct surgical clipping , 19 patients had endovascular treatments. The results of MSCTA which show the position, shape and size of the aneurysm , the relation of neck and parent artery were basically identical to what had been seen during the operation and the expressions of DSA .There are no false positive results . 28 patients reexamination results the developed well, the proximal and distal end of the aneurysms were clear ,no residual aneurysms remained .Conclusions: MSCTA can exactly shows the position, shape and size of the aneurysm and the relation of neck , parent artery and skull base . It can be used as an important tool for clinical diagnosis of intracranial aneurysm and is a significant reference for surgical planning before operation .It also can be used as an important tool for postoperative reexamination and follow-up.