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探讨大脑中动脉瘤的影像特征，比较ＤＳＡ与ＣＴ的诊断价值。回顾性分析１９例大脑中动脉瘤的ＤＳＡ及ＣＴ的影像学资料。结果显示大脑中动脉瘤单发１６例（８４．２％）、发生于大脑中动脉膝段１６例（８４．２％）、瘤体较大者１０例（５２．６％）、囊状动脉瘤１５例（７８．９％），其中７例动脉瘤顶指向外侧，仅１例指向内侧。ＣＴ示１７例蛛网膜下腔出血，其中４例伴颅内血肿；２例单纯颅内血肿；６例颅内血肿中有３例为颞叶血肿，其动脉瘤均位于大脑中动脉膝部且瘤顶指向外侧。结论：ＤＳＡ显示动脉瘤的形态、大小、数量、位置及膨突方向对诊断本病有决定性意义。而ＣＴ对发现蛛网膜下腔出血和颅内血肿有着不可取代的重要价值。两者相互补充，方能全面了解大脑中动脉瘤。
To explore the imaging features of middle cerebral artery aneurysms and to compare the diagnostic value of DSA and CT. The imaging data of DSA and CT in 19 cases of middle cerebral artery aneurysm were retrospectively analyzed. The results showed that there were 16 cases (84.2%) of single cerebral aneurysm, 16 cases (84.2%) of middle cerebral artery, 10 cases (52.6%) of large aneurysm, cystic artery Tumors were found in 15 cases (78.9%), of which 7 cases showed the top of the aneurysm pointing to the lateral side and only 1 case pointing to the medial side. CT showed 17 cases of subarachnoid hemorrhage, of which 4 cases with intracranial hematoma; 2 cases of simple intracranial hematoma; 6 cases of intracranial hematoma in 3 cases of temporal lobe hematoma, the aneurysms are located in the middle cerebral artery and knee The tumor top points to the outside. Conclusion: DSA shows that the morphology, size, number, location and direction of aneurysm are of decisive significance for the diagnosis of this disease. CT has an irreplaceable value for the detection of subarachnoid hemorrhage and intracranial hematoma. The two complement each other in order to fully understand the middle cerebral artery aneurysms.