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作者报道了52例经血管造影证实无动脉瘤存在的蛛网膜下腔出血病例,分析了出血部位的分布特点。CT检查发现,52例经血管造影检查证实无动脉瘤存在的蛛网膜下腔出血的部位均在脑干前方。常见部位为脚间池、桥前池,其次为一例环池、四叠体池和大脑纵裂后部;而外侧裂和大脑纵裂前部从不被血液充填,而且均无脑室内出血。4例MR检查发现血液可向下到延髓前方。作者认为,这种类型的脑池出血不同于动脉瘤破裂的蛛网膜下腔出血,后者的出血常见于大脑纵裂前部、外侧裂和脑室内。经两位神经放射学家用这一鉴别标准分析221例经过血管造影检查的蛛网膜下腔出血病人的CT扫描结果,仅1例经血管造影证实为基底动脉动脉瘤破裂的CT结果被这两位医生同时误诊为无动脉瘤存在的中脑周围出血。再次阅片,作者发现该患者的出血部位在鞍上池(包括脚间池和交叉
The authors reported 52 cases of subarachnoid hemorrhage confirmed by angiography without aneurysm and analyzed the distribution of bleeding sites. CT examination found that 52 cases of angiography confirmed aneurysm existence of subarachnoid hemorrhage sites are in front of the brain stem. Common parts for the foot pool, the bridge before the pool, followed by a case of the Central pool, quadruple pool and the longitudinal lobe of the rear; and the lateral cleft and longitudinal brain never crack the front of the blood filled, and no intraventricular hemorrhage. 4 cases of MR examination found that the blood can be down to the medulla oblongata. Authors believe that this type of cerebral pool hemorrhage is different from ruptured aneurysm subarachnoid hemorrhage, the latter common in the latter part of the anterior longitudinal lobule, lateral fissures and ventricle. Two neuroradiologists analyzed the results of CT scans of 221 patients with subarachnoid hemorrhage who underwent angiography using this identification standard. Only one CT scan confirmed by angiography as basilar artery aneurysm rupture was diagnosed by both At the same time, the doctor misdiagnosed as having no aneurysm around the midbrain hemorrhage. Reading again, the authors found that the patient’s bleeding site in the saddle pool (including the foot pool and cross