福彩3d跨度走势图

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科普动画|X射线是如何透视人体的?

2018-12-02

  

CT

  

LAIYUAN:QIXIEZHIJIA    ZUOZHE:Chelsea

福彩3d跨度走势图 LAIYUAN:QIXIEZHIJIA    ZUOZHE:Chelsea

2018-12-02

  

CT

  

因为传统外科手术有时造成的创伤对病人不仅意味着痛苦,而且还可能面领着感染以及复杂的并发症的危险。长久以来,内科医生一直渴望能拥有一种能窥视人体内部结构的能力。这种美好的愿望一直到1895年11月8日才得以实现。以下这个视频就从X射线的发现、X射线的特性以及X射线成像装置三方面介绍了X射线是如何透视人体的。



(一)X射线的发现



福彩3d跨度走势图 1895NIAN11YUE8RI,DEGUOWULIXUEJIALUNQINZAIWurzburgDAXUEZUOYINJISHEXIANGUANSHIYANSHIFAXIANLEYIZHONG“XINDESHEXIAN”,TAJIANGTAMINGMINGWEI“XSHEXIAN”。(HOUSHIWEILEJINIANLUNQINYECHENGZHEIZHONGSHEXIANWEI“LUNQINSHEXIAN”。)SANTIANHOU,LUNQINOUERKANDAOLETAFURENDESHOUZHANGDEXSHEXIANYINGXIANG。ZHEISHIRENLEISHOUCITONGGUOFEICHUANGSHANGJISHUZHIGUANDIKANDAOLETINEIJIEGOU。CONGCIKAICHUANGLEYONGXSHEXIANJINXINGYIXUEZHENDUANDEFANGSHEXUE——XSHEXIANSHEYINGSHU,DIANDINGLEYIXUEYINGXIANGSHEYINGDEJICHU。


(二)X射线的特性



福彩3d跨度走势图 ZAIXSHEXIANQIUGUANZHONG,GAOSUDIANZILIUHONGJIJINSHUBADIANZIDONGNENGZHUANHUANWEIGUANGNENG(XSHEXIAN),QIZHONG99%DENENGLIANGZHUANHUANWEIRENENG,1%DENENGLIANGZHUANHUANWEIXSHEXIAN。ZAIDIANCIBOPUZHONG,XSHEXIANSHIJIEYUZIWAIXIANHEγSHEXIANZHIJIANDEDIANCIBO。XSHEXIANZHISUOYINENGGOUYONGYUYIXUEZHENDUAN,SHIYOUYUJUYOUBOZHANGDUAN,GUANGZINENGLIANGDADENGTEDIAN。YINCICHULEJUYOUPUTONGGUANGDETEXINGWAI,TAHAIJUYOUCHUANTOUZUOYONG、DIANLIZUOYONG、YINGGUANGZUOYONG。


(三)X射线成像装置


CT是运用X射线360°一层一层扫描获得图像的成像装置。如果只有一道X射线,你可能只能看到肿瘤的影像。至于肿瘤有多大多深。要是你从各个角度来做X射线扫描就能看到这个肿瘤的具体形状和具体位置。


LUNQINDEYIWAIFAXIANCHENGWEILEYIGEYIXUEQIJI。RUJINMEINIANQUANSHIJIEDEYIYUANDOUYOUCHAOGUO1YICIDEXSHEXIANSAOMIAO,TONGGUOXSHEXIANJINXINGYIXUEZHENDUANWANJIUSHENGMING!


SHANGZHOURIWOMENTUISONGDESHIPINDEDAOLEDAJIADERELIEFANKUI,YOUBUSHAOPENGYOUZAIHOUTAILIUYANBIAOSHIXIWANGQIXIEZHIJIATUICHUGENGDUOGUANYUYIXUEYINGXIANGDEKEPUDONGHUA。ZHEIQIWOMENTUISONGDEGUANYUXSHEXIANDESHIPINNINHAIMANYIMA?HUANYINGZAIWENMOLIUYANGAOSUQIXIEZHIJIANINDEXIANGFA~

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