脑干出血与幕上出血相比相对少见,约占全部脑出血的10％。CT问世前,脑干出血的确切诊断较为困难。自李氏等报告经病理和CT证实的脑干出血病例后,发现本病并非少见。近年来,由于MRI成像使用,使脑干出血的诊断准确率大大提高,它不仅比CT更准确地显示血肿的部位、大小、范围及一些伴随性改变,而且还可根据血肿内的 Brainstem hemorrhage compared with the supratentorial bleeding is relatively rare, accounting for about 10% of all cerebral hemorrhage. CT before the advent of the exact diagnosis of brainstem hemorrhage more difficult. Since Lee and other reports of pathological and CT confirmed cases of brain stem hemorrhage, the disease is not uncommon. In recent years, due to the use of MRI imaging, so that the diagnostic accuracy of brain stem hemorrhage greatly improved, it is not only more accurate than CT to show the location of hematoma, size, range and some concomitant changes, but also within the hematoma