核磁、B超、CT、X光，哪个辐射大？一文讲清

信息助手 发表于 3 天前

<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">近日，“一患者做核磁共振被遗忘6小时”一事引发广泛关注。华中科技大学同济医学院附属同济医院针对此事发布情况通报：涉事医务人员已被停职处理；已对患者进行全面健康检查，就后续赔偿事宜与患者家属保持积极沟通。<a class="normal_text_link" target="_blank" href="https://mp.weixin.qq.com/s?__biz=MTI0MDU3NDYwMQ==&mid=2657899840&idx=1&sn=dc8479d44caf0231d08ca3c48107f95b&scene=21#wechat_redirect" textvalue="详情" data-itemshowtype="0" linktype="text" data-linktype="2" style="overflow-wrap: break-word;">详情</a><span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;"> <span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">在厘清责任的同时，公众更关心被遗忘在核磁共振室内6小时会不会<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">造成严重的健康损害。作为当前医疗检查项目的主要方式，CT、核磁、B超等不同影像检查是否都有辐射？做检查时都应注意哪些问题？<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">专家：核磁共振、B超<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;"> 均不存在“辐射”问题<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">要弄清核磁共振到底有没有辐射的问题，首先要了解这项检查如何开展。<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">核磁共振名称中的“核”指的是氢原子核，是利用磁场和无线电波来调节氢原子核的磁性方向来实现对人体机体软组织的成像，并不会对人体产生公众普遍担忧的“辐射”伤害。目前，这项检查是神经系统、肌肉骨骼系统、腹部盆腔脏器疾病诊断的重要手段。 <section nodeleaf="" style="overflow-wrap: break-word; box-sizing: border-box; max-width: 100%; text-align: center; margin-top: 16px;"><ignore_js_op style="overflow-wrap: break-word;">https://img.513425.net/data/attachment/forum/202603/18/143002tudk24g4uxd4ndax.jpeg</ignore_js_op></section> <span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">首都医科大学附属北京佑安医院首席医学放射诊断学专家李宏军表示，核磁共振成像使用的是强磁场和射频脉冲，而非X射线或放射性核素，整个过程不存在电离辐射。患者承受的主要是幽闭空间带来的心理压力、机器噪声以及身体疲惫，但没有<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">被<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">“辐射”伤害的风险。<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;"> <span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">专家提醒，虽然<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">核磁共振检查<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">没有电离辐射，但要防范其强磁场环境可能带来的风险： <ul class=" list-paddingleft-2" style="overflow-wrap: break-word; padding-top: 0px; padding-right: 0px; padding-bottom: 0px;"><li>体内有心脏起搏器、人工耳蜗等铁磁性金属植入物者严禁检查。</li><li>金属物品绝对不能带进检查室。</li><li>此外，文身颜料可能含金属，需提前告知医生。</li></ul><span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">除了核磁检查，<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">影像检查中的B超（超声）检查也不存在“辐射”问题。超声检查通过超声波回声实时成像，由于无创便捷、没有辐射风险，适合孕妇和儿童，同时适宜对<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">肝胆、胰腺、甲状腺、乳腺等<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">进行<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">检查。 <section nodeleaf="" style="overflow-wrap: break-word; box-sizing: border-box; max-width: 100%; margin-top: 16px; margin-bottom: 24px;"><iframe width="100%" frameborder="0" src="http://wxtool.513425.com/plugin.php?id=wcn_editor:player&url=https%3A%2F%2Fmp.weixin.qq.com%2Fmp%2Freadtemplate%3Ft%3Dpages%2Fvideo_player_tmpl%26action%3Dmpvideo%26auto%3D0%26vid%3Dwxv_4432657299018629126&org=https%3A%2F%2Fmp.weixin.qq.com%2Fs%2F6LFGPnAy8jizRFuXw7U8Vg" allowfullscreen="true" data-ratio="1.778" data-wcn="1" style="overflow-wrap: break-word; position: absolute; width: 2283.25px; height: 1284.16px; left: 0px; top: 0px;"></iframe></section> <span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">X光、CT等项目<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">涉及需要防范的电离辐射<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">专家介绍，俗称为胸片的X光、CT和PET-CT等核医学检查项目，才会涉及需要防范的电离辐射，这些项目都属于精准的“特种检查”，对于肺部、脑部的细微病变，可以有更清晰的判断。<ul class=" list-paddingleft-2" style="overflow-wrap: break-word; padding-top: 0px; padding-right: 0px; padding-bottom: 0px;"><li><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">X光摄影是利用X射线穿透人体形成平面图像，常用于检查骨折、肺部炎症等，辐射剂量很低，一次相当于10天自然背景辐射；</li><li><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">CT是通过X射线多层扫描再重建出断层图像，信息量远超X光，可清晰显示全身各器官的细微病变，如早期肺癌、脑出血等。但辐射剂量较高，“做一次CT相当于拍几百次X光”的说法基本准确。一次胸部CT检查的辐射剂量相当于2—3年接触的自然背景辐射。</li></ul> <section nodeleaf="" style="overflow-wrap: break-word; box-sizing: border-box; max-width: 100%; text-align: center; margin-bottom: 16px;"><ignore_js_op style="overflow-wrap: break-word;">https://img.513425.net/data/attachment/forum/202603/18/143002wpq5tqgs8zbtth0q.jpeg</ignore_js_op></section> <ul class=" list-paddingleft-2" style="overflow-wrap: break-word; padding-top: 0px; padding-right: 0px; padding-bottom: 0px;"><li><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">PET-CT需注射放射性示踪剂，结合功能代谢与解剖结构成像，主要用于肿瘤的早期诊断、分期和疗效评估，是肿瘤诊断重要的措施和手段。</li></ul><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">如何评估CT等检查存在的辐射风险和检查获益的必要性？专家介绍，单次必要检查风险极低，建议患者不要因噎废食。对于肺癌的高危人群，每年进行一次低剂量螺旋CT筛查是重要的早筛手段。<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">专家提醒：<ul class=" list-paddingleft-2" style="overflow-wrap: break-word; padding-top: 0px; padding-right: 0px; padding-bottom: 0px;"><li><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">CT和X光检查最怕“乱动”和“不防护”，图像模糊会导致重拍，增加不必要辐射。</li><li><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">增强检查最怕“过敏”。注射造影剂后，应在休息区观察30分钟再离开，以防迟发性过敏反应；回家后多喝水，加速造影剂排出。</li></ul> <section nodeleaf="" style="overflow-wrap: break-word; box-sizing: border-box; max-width: 100%; margin-bottom: 16px;"><iframe width="100%" frameborder="0" src="http://wxtool.513425.com/plugin.php?id=wcn_editor:player&url=https%3A%2F%2Fmp.weixin.qq.com%2Fmp%2Freadtemplate%3Ft%3Dpages%2Fvideo_player_tmpl%26action%3Dmpvideo%26auto%3D0%26vid%3Dwxv_4432655500064997385&org=https%3A%2F%2Fmp.weixin.qq.com%2Fs%2F6LFGPnAy8jizRFuXw7U8Vg" allowfullscreen="true" data-ratio="1.778" data-wcn="1" style="overflow-wrap: break-word; position: absolute; width: 2283.25px; height: 1284.16px; left: 0px; top: 0px;"></iframe></section><section style="overflow-wrap: break-word; box-sizing: border-box; max-width: 100%; line-height: 1.6em; margin-bottom: 16px;"><span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">对于<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">孕妇、备孕期夫妇、婴幼儿等特殊群体，专家提示：</section> <ul class=" list-paddingleft-2" style="overflow-wrap: break-word; padding-top: 0px; padding-right: 0px; padding-bottom: 0px;"><li><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">B超对孕妇、胎儿绝对安全，是检查的<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">首选<span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">。</li><li><span leaf="" style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">核磁共振同样无辐射，但孕早期不建议做，婴幼儿可能需要镇静配合。</li><li><section style="overflow-wrap: break-word; box-sizing: border-box; max-width: 100%; line-height: 1.6em; margin-bottom: 16px;"><span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">孕妇、备孕期夫妇谨慎选择X光，必须检查时<span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">可在铅衣防护下进行，备孕者检查后建议间隔3—6个月再备孕。</section></li><li><section style="overflow-wrap: break-word; box-sizing: border-box; max-width: 100%; line-height: 1.6em; margin-bottom: 16px;"><span leaf="" data-pm-slice="1 1 " style="overflow-wrap: break-word; color: rgba(0, 0, 0, 0.9); font-size: 17px; font-family: mp-quote, PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; letter-spacing: 0.034em;">严格限制CT和PET-CT。对于需要多次检查的患者，建议建立个人医疗档案，妥善保管影像资料，就诊时带给医生参考，主动沟通检查史，遵循医嘱。</section></li></ul><p data-pm-slice="0 0 []" style="margin-top: 0px; margin-bottom: 0px; padding: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: PingFang SC, system-ui, -apple-system, BlinkMacSystemFont, Helvetica Neue, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif; font-size: 17px; text-align: justify; text-wrap-mode: wrap; background-color: rgb(255, 255, 255); line-height: 1.6em; color: rgb(51, 51, 51); overflow-wrap: break-word !important; box-sizing: border-box !important;"><span style="overflow-wrap: break-word !important; -webkit-tap-highlight-color: rgba(0, 0, 0, 0); margin: 0px; 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核磁、B超、CT、X光，哪个辐射大？一文讲清