第3238章 【3248】争议区

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    原理是很简单,如果脑部哪个区域功能活跃,它的脑耗氧量会变大。
    fMRI之所以在临床上听的少,是因为它主要应用在心理学研究。
    心理学研究我们说过,它若是唯物主义论,是要以解剖学为基础。心理学家因此拿这个检查作为解剖学上观察人类脑部活动的依据。
    有用吗?fMRI有缺陷,缺陷在它的空间分辨率低,为提高它的分辨率,不外乎要使用降噪算法等手段。对这些处理手段你可以把它类比为录音影像的后期剪辑。后期
    的修饰自然而然受操作者人为因素影响过大,可能会让原始数据失真致使结果偏差。
    实验数据失真,医学伦理问题出来了。因为有些心理学研究结果会运用到社会疑难问题上,如后来一段时间热捧的测谎仪,其实有部分实验利用的是这个fMRI。这样的测谎仪如果用到法庭上判人
    是否有罪是否杀人,你说这个问题大不大可怕不可怕。
    而且有的律师会利用fMRI给杀人犯脱罪,说罪犯的脑电图异常有精神疾病,可以帮罪犯摆脱死刑。现在谈的是植物人,植物人是脑活动异常睡眠了。按照fMRI的原理,它是可以帮助医生观察患者脑部的活动情况,有助于医生判断这个患者的预后以及是否
    可以采取更激进的治疗手段。
    恰好,对植物人来说,最有效的首先不是看治疗手段,而是要判断出这个病人是否有机会可以被刺激后苏醒过来。
    这里要说到这个年代医学圈激烈讨论的并且即将出炉的植物人新分类。在以前的话,什么是植物人,医生只要做个指令,患者不能遵照医生指令活动可以叫做植物人。后来发现,这类病人其中有一类是可以睁开眼睛的,眼球能
    对医生的指示做出反应。这种病人再经过fMRI的评估断定是有残留意识活动的。这类病人医生们将给予他们更准确的定义叫做微意识状态病人,有别于植物人。
    新的分类下来以后,会发现以前的植物人中将近一半非植物人,而是微意识状态病人。说明这个新分类很影响临床判断的。讨论这些最崭新的学术议题时,大佬一样难免兴致勃勃,查理医生情绪高昂,说着:好好好,你一个医学生居然懂这个全世界前沿神经外科医学话题,说明
    对神经外科很有兴趣很了解。
    谢婉莹可以感觉到自己后背被曹师兄温柔的手拍拍了。看得出来,曹师兄对她这样的表现一样很满意。
    查理医生说了,说到了仲山医学院第一附属医院,参与过这个病人的床旁会诊,给出的建议有她说的fMRI。
    不愧是国际顶尖神经外科大佬,对医学前沿手段了然于胸掌握乾坤。
    对方医院采纳不采纳他说的学术观点,现场没有结论。大家争议性是比较大的。谁让全世界植物人新分类未出炉。从这里会发现,一个行业的标准制定能直接影响到临床工作和病人。
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