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伽玛刀(立体定向放射治疗)

ID: ANH14134chis
医疗动画文字记录:伽玛刀,也称为立体定向放射外科手术,是一种常用的治疗脑肿瘤的放射疗法。也可用于治疗头部其他异常情况。伽玛刀是一种非侵入性手术,不需要在皮肤上开切口。取而代之的是一台机器,精确地聚焦并将大约200束辐射传送到头部内的目标区域。辐射只会杀死异常细胞,而不会伤害周围的正常组织。伽玛刀用于治疗小脑瘤、血管畸形和神经系统疾病,这些疾病的病变部位很难触及或用其他方法治疗风险太大。伽玛刀头部框架有四个销或螺钉。麻醉头皮后,医生将用螺钉固定头部框架。这个框架可以防止头部移动,帮助引导辐射光束。头部框架就位后,将进行成像研究,如MRI或CT扫描,以确定要治疗目标的确切大小、形状和位置。治疗团队将使用成像研究和先进的软件来制定治疗计划。然后,病人躺在伽玛刀诊察台上。将防辐射头盔放置在头部框架上。头盔上有孔,只允许治疗计划中设定的辐射通过。头盔就位后,诊察台就会滑入辐射装置。整个过程无声无痛。根据治疗区域的大小和形状,需要几分钟到1个小时或更长的时间。对肿瘤的影响要在手术后一段时间才能显现。想要了解更多信息,请咨询医生。
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