关键词: 蛛网膜下腔出血; 体层摄影术; X线计算机; 出血; 预测

Abstract: Objective To evaluate the morphological features of aneurysmal subarachnoid hemorrhage oncomputed tomography (CT) scan, then to forcast the location of intracranial ruptured aneurysms onthe basis of the CT results.Methods The manifestation of CT and digital subtraction angiography (DSA) in eighty-twopatients with aneurysmal subarachnoid hemorrhage were analyzed. The relationship between thesubarachnoid hemorrhage morphology and the location of the intracranial aneurysm was found.Results The distribution of the hemorrhage caused by ruptured aneurysms located on the anteriorcerebral artery (ACA), anterior communicating artery (ACoA) and middle cerebral artery (MCA)are special. The hemorrhage mainly distributes on the anterior longitudinal cistern, sylvian cistern.Sometimes there are hematomas on those cisterns. That caused by ruptured aneurysms locatedon the internal cerebral artery (ICA) and posterior communicating cerebral artery (PCoA) arevarious. But the typical hemorrhage distribute on the super-sellar cistern and sylvian cistern. Thehemorrhage pattern of ruptured aneurysms on the posterior cerebral circulate such as the posteriorcerebral artery (PCA), basic artery (BA), vertebral artery (VA) and anterior inferior cerebellumartery (AICA) has its own characteristics, but it’s difficult to be distinguished with the nonaneurysmalhemorrhage around the brain-stem. The hemorrhage distribute on the interpeduncularcistern, ambient cistern, quadrigeminal cistern, superior and under cerebellar tentorium, prepontinecistern and lateral cerebellomedullary cistern.Conclusion We can predict some ruptured aneurysms located on ACoA, ACA and MCAaccording to the quantity and distribution of subarachnoid hemorrhage on CT scan. It’s difficultto distinguished the non-aneurysmal hemorrhage around the brain-stem with the aneurysmalhemorrhage caused by ruptured PCA, VA, BA and AICA aneurysms. It isn’t accurate to predict theruptured ICA and PCoA aneurysms because of the various hemorrhage morphology.

Key words: Subarachnoid hemorrhage; Tomography; x-ray computed; Hemorrhage; Forecasting