Inoue Y, Saiwai S, Miyamoto T, Ban S, Yamamoto T, Takemoto K, Taniguchi S, Sato S, Namba K, Ogata M
J Comput Assist Tomogr. 1981 Jun;5(3):341-4. doi: 10.1097/00004728-198106000-00004.
Computed tomography (CT) scans of 49 patients with subarachnoid hemorrhage (SAH) secondary to ruptured aneurysms were reviewed. Subarachnoid blood was detected in 95% when CT was performed within 5 days after the bleeding. Prediction of the site of the ruptured aneurysm from distribution of the cisternal blood varied from 92% for the anterior cerebral artery aneurysms to 70% for the middle cerebral and 47% for the internal carotid artery aneurysms. Following plain CT scans, postcontrast studies were performed in 27 patients. Aneurysms were directly visualized in 8 cases and subarachnoid enhancement was noted in 21. In 3 cases, subarachnoid enhancement made possible a correct diagnosis of SAH in the absence of evidence of cisternal blood on precontrast CT scans.
回顾了49例因动脉瘤破裂继发蛛网膜下腔出血（SAH）患者的计算机断层扫描（CT）图像。出血后5天内进行CT检查时，95%的患者检测到蛛网膜下腔出血。根据脑池内血液分布预测破裂动脉瘤的部位，大脑前动脉动脉瘤的预测准确率为92%，大脑中动脉动脉瘤为70%，颈内动脉动脉瘤为47%。在平扫CT扫描后，对27例患者进行了增强扫描。8例直接显示出动脉瘤，21例可见蛛网膜下腔强化。3例患者在平扫CT上无脑池内血液证据，但蛛网膜下腔强化使得SAH得以正确诊断。
