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<p style="text-align: left;"><iframe src="https://v.qq.com/iframe/player.html?width=500&height=375&auto=0&vid=s0154g2ub3a&auto=0" width="100%" height="580" frameborder="0"></iframe></p><section class="" powered-by="gulangu" style="max-width: 100%;box-sizing: border-box;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", " ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;text-align: justify;white-space: normal;word-wrap: break-word !important;"><section class="" style="margin-top: 10px;margin-bottom: 10px;max-width: 100%;box-sizing: border-box;word-wrap: break-word !important;"><section class="" style="padding-right: 20px;padding-left: 20px;max-width: 100%;box-sizing: border-box;color: rgb(105, 115, 117);line-height: 1.9;letter-spacing: 1px;word-wrap: break-word !important;"><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;margin-left: 0px;margin-right: 0px;word-wrap: break-word !important;"><span style="font-size: 15px;"> </span><span style="font-size: 15px;">X线对人体健康确有一定危害,X线照射量越大,对人体的损害就越大。X线照射量可在身体内累积,其主要危害是对人体血液成分中的白细胞具有一定的杀伤力,使人体血液中的白细胞数量减少,进而导致机体免疫功能下降,使病菌容易侵入机体而发生疾病。至于摄片检查因部位不同,照射量多不同,所以相应的容许照射次数也不同。病人在一年当中做2~3次检查对健康的影响是微不足道的。</span></p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;margin-left: 0px;margin-right: 0px;word-wrap: break-word !important;"><span style="font-size: 15px;"><br /></span></p></section></section></section><section class="" powered-by="gulangu" style="max-width: 100%;box-sizing: border-box;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", " ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;text-align: justify;white-space: normal;word-wrap: break-word !important;"><section class="" style="margin-top: 10px;margin-bottom: 10px;max-width: 100%;box-sizing: border-box;word-wrap: break-word !important;"><section class="" style="padding-right: 20px;padding-left: 20px;max-width: 100%;box-sizing: border-box;color: rgb(105, 115, 117);line-height: 1.9;letter-spacing: 1px;word-wrap: break-word !important;"><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;margin-left: 0px;margin-right: 0px;word-wrap: break-word !important;"><span style="font-size: 15px;">虽说X线检查对绝大多数人是安全的,但仍应强调,由于<strong style="max-width: 100%;box-sizing: border-box;word-wrap: break-word !important;"><span style="font-size: 15px;max-width: 100%;box-sizing: border-box;color: rgb(217, 28, 28);word-wrap: break-word !important;">胎儿、婴幼儿、儿童对X线非常敏感,故孕妇和婴幼儿、儿童应尽量避免X线检查</span></strong>。对婴幼儿的X线检查最好仅将被检查部位暴露,其余部分均应遮盖。在正常情况下,如果不超过容许照射时间及次数应该是相对安全的。但是对于X线的敏感性每个人是不相同的,它还与人体的一般健康状况有关系,更重要的是所谓安全照射量并不保证对遗传因子也是安全的,因为目前对于足以影响遗传的照射量究竟是多少还不十分明确。但是,从预防角度来看,X线检查次数还是越少越好。</span></p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;margin-left: 0px;margin-right: 0px;word-wrap: break-word !important;"><span style="font-size: 15px;"><br /></span></p><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;margin-left: 0px;margin-right: 0px;word-wrap: break-word !important;"><span style="font-size: 15px;">人体受到放射线的照射,随着射线作用剂量的增大,有可能随机地出现某些有害效应。例如它可能<strong style="max-width: 100%;box-sizing: border-box;word-wrap: break-word !important;"><span style="font-size: 15px;max-width: 100%;box-sizing: border-box;color: rgb(217, 28, 28);word-wrap: break-word !important;">诱发白血病、甲状腺癌、骨肿瘤等恶性肿瘤;也可能引起人体遗传物质发生基因突变和染色体畸变,造成先天性畸形、流产、死胎、不育等病症</span></strong>。不过,这种情况发生的几率很低,其危险度一般没有超过目前人们可以接受的范围。 </span></p></section></section></section><section class="" powered-by="gulangu" style="max-width: 100%;box-sizing: border-box;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", " ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;text-align: justify;white-space: normal;word-wrap: break-word !important;"><section class="" style="margin-top: 10px;margin-bottom: 10px;max-width: 100%;box-sizing: border-box;word-wrap: break-word !important;"><section class="" style="padding-right: 20px;padding-left: 20px;max-width: 100%;box-sizing: border-box;font-size: 14px;color: rgb(105, 115, 117);line-height: 1.9;letter-spacing: 1px;word-wrap: break-word !important;"><p style="max-width: 100%;box-sizing: border-box;min-height: 1em;text-align: left;margin-left: 0px;margin-right: 0px;word-wrap: break-word !important;"><span style="max-width: 100%;box-sizing: border-box;font-size: 15px;word-wrap: break-word !important;">在事故情况下,如果人体所受射线的剂量达到一定程度,就可能出现一些明确的预期的有害效应。如人体眼晶体一次受到2戈瑞以上的X或γ射线的照射,在3周以后就可能出现晶状体混浊,形成白内障;人体皮肤受到不同剂量的照射,可分别出现脱毛、红斑、水泡及溃疡坏死等损害;另外,还可能引起贫血、免疫功能降低、寿命缩短以及内分泌和生殖机能失调等。当人体在短时间(数秒至数日)受到大于1戈瑞剂量的射线照射后,就会产生急性放射病,危及生命;机体在较长时间内受到超剂量限值的射线作用后可能导致慢性放射病,造成以造血组织损伤为主的全身慢性放射损伤。这种情况主要针对从事射线工作的职业人员,很少在公众中发生,也不包括局部的医疗照射。</span></p></section></section></section><section class="" style="max-width: 100%;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", " ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;text-align: justify;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;word-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><p style="max-width: 100%;min-height: 1em;box-sizing: border-box !important;word-wrap: break-word !important;"><img class=" " 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GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 17px;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;font-size: 14px;line-height: 21px;color: rgb(255, 255, 255);font-family: arial, helvetica, sans-serif;box-sizing: border-box !important;word-wrap: break-word !important;"><span class="" style="margin-right: 8px;padding: 4px 10px;max-width: 100%;border-radius: 5px;background-color: rgb(191, 0, 0);box-sizing: border-box !important;word-wrap: break-word !important;"></span></strong><br data-filtered="filtered" style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;" /></p><p style="max-width: 100%;min-height: 1em;color: rgb(51, 51, 51);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", " ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", 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