目的介绍神经导航系统在手术中的应用和克服脑移位的方法。
Objective To introduce the experience in correcting the reference-point deviation caused by brain-shift during the neuronavigation operation.
目的定量研究不同神经导航手术中的脑移位，评价术中脑移位对神经导航手术定位准确性的影响。
Objective A quantitative analysis of intraoperative brain shift in neuronavigator-guided surgery was performed to evaluate the impact of brain shift on accuracy of neuronavigation.
方法大脑内病变20例，术中在硬脑膜打开前、后用导航仪测出硬脑膜和脑表面标记点的差值，为病变切除前的脑移位量。
Methods During neuronavigated operations of 20 patients with supratentorial cerebral lesions, the amount of brain shift was measured using neuronavigation system.
第2天脑mri和CT扫描发现病变进展，伴有部分出血改变、急性脑肿胀和严重中线移位。
Brain MRI and CT scans on day 2 revealed progression of the lesion, with partial hemorrhagic change, acute brain swelling, and severe midline shift.
结论急性硬膜下血肿，中线移位和脑池受压的程度及有否弥漫性脑肿胀，对判断损伤程度及预后有重大意义。
Conclusion the middle shift, compression of basal cistern and diffuse brain swelling might be helpful in evaluating the severity of craniocerebral injury and the prognosis of patients.
常见的转移位置为淋巴结、肺、肝、脑、皮肤及骨头，骨骼肌肉内转移则非常罕见。
The most common sites of metastasis are regional lymph nodes, lung, liver, brain, skin, and bone.
原发性低颅压有明显的影像学改变，其根本原因是脑脊液容量减少和脑组织移位。
SIH have obvious of the image change, it basic reason is the brain ridge liquid capacity de- crease and brain organization move.
脑ct示左侧额、颞、顶叶大片低密度病灶，左侧脑室受压变小，中线结构向右移位。
Brain CT showed the left frontal temporal, parietal, a large low-density lesions, smaller left ventricle pressure, midline shift to the right.
脑灰白质向内移位。
结果6例患侧脑功能区移位，8例锥体束走行移位，10例神经纤维束形态完好、4例纤维束弥散。
Results 6 cases of brain function in patients with ipsilateral zones shift, 8 cases of pyramidal shift, 10 cases with good shape, some fiber loss in 4 cases.
结果6例患侧脑功能区移位，8例锥体束走行移位，10例神经纤维束形态完好、4例纤维束弥散。
Results 6 cases of brain function in patients with ipsilateral zones shift, 8 cases of pyramidal shift, 10 cases with good shape, some fiber loss in 4 cases.
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