{"id":17849,"date":"2020-06-22T14:10:42","date_gmt":"2020-06-22T14:10:42","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/o-que-e-raio-x-de-diagnostico-doses-de-radiacao-definicao\/"},"modified":"2020-07-22T10:27:47","modified_gmt":"2020-07-22T10:27:47","slug":"o-que-e-raio-x-de-diagnostico-doses-de-radiacao-definicao","status":"publish","type":"post","link":"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-raio-x-de-diagnostico-doses-de-radiacao-definicao\/","title":{"rendered":"O que \u00e9 raio X de diagn\u00f3stico &#8211; Doses de radia\u00e7\u00e3o &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-u-clearfix su-u-trim\">Os raios X de diagn\u00f3stico usam uma dose muito pequena de radia\u00e7\u00e3o ionizante para produzir imagens do interior do corpo.\u00a0Os exames de diagn\u00f3stico por raio-X representam cerca de 90% da dose de radia\u00e7\u00e3o que a popula\u00e7\u00e3o recebe de fontes m\u00e9dicas.\u00a0Dosimetria de Radia\u00e7\u00e3o<\/div>\n<\/div>\n<div class=\"su-divider su-divider-style-dotted\"><\/div>\n<div class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights lgc-first lgc-last\">\n<div class=\"inside-grid-column\">\n<p><strong>Os raios X de diagn\u00f3stico<\/strong>\u00a0usam uma dose muito pequena de radia\u00e7\u00e3o ionizante para produzir imagens do interior do corpo.\u00a0Os exames de diagn\u00f3stico por raio-X representam cerca de 90% da dose de radia\u00e7\u00e3o que a popula\u00e7\u00e3o recebe de fontes m\u00e9dicas.\u00a0Radiografias de t\u00f3rax (cerca de\u00a0<strong>100 \u00b5Sv<\/strong>\u00a0) s\u00e3o as mais comuns e representam cerca de 25% de todos os exames de raio-x, seguidos por radiografias do ombro, pelve e membros (outros 25%) e radiografias dent\u00e1rias ( 10%).\u00a0Observe que n\u00e3o h\u00e1 evid\u00eancias diretas de radia\u00e7\u00e3o que causem algum dano nos n\u00edveis de exposi\u00e7\u00e3o encontrados nos exames radiol\u00f3gicos de diagn\u00f3stico.<\/p>\n<p><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radiation\/x-rays-roentgen-radiation\/\">Os raios X<\/a>\u00a0pertencem \u00e0 chamada\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-protection\/radiobiology\/high-let-and-low-let-radiation\/\">radia\u00e7\u00e3o de baixa letalidade<\/a>\u00a0.\u00a0Foi descoberto que os efeitos biol\u00f3gicos de qualquer radia\u00e7\u00e3o\u00a0<strong>aumentam<\/strong>\u00a0com a\u00a0<strong>transfer\u00eancia linear de energia<\/strong>\u00a0(LET).\u00a0Em suma, o dano biol\u00f3gico da\u00a0<strong>radia\u00e7\u00e3o<\/strong>\u00a0de\u00a0<strong>alta LET<\/strong>\u00a0(\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/alpha-particle\/\">part\u00edculas alfa<\/a>\u00a0,\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/what-is-proton-properties-of-proton\/\">pr\u00f3tons<\/a>\u00a0ou\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/neutron\/\">n\u00eautrons<\/a>\u00a0) \u00e9 muito maior do que o da\u00a0<strong>radia\u00e7\u00e3o<\/strong>\u00a0de\u00a0<strong>baixa LET<\/strong>\u00a0(\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/photon\/gamma-ray\/\">raios gama<\/a>\u00a0,\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/fundamental-particles\/photon\/gamma-ray\/\">raios\u00a0<\/a><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radiation\/x-rays-roentgen-radiation\/\">X<\/a>)\u00a0Isso ocorre porque o tecido vivo pode reparar mais facilmente os danos causados \u200b\u200bpela radia\u00e7\u00e3o que se espalha por uma \u00e1rea grande do que aquela que est\u00e1 concentrada em uma \u00e1rea pequena.\u00a0Obviamente, em n\u00edveis muito altos de exposi\u00e7\u00e3o, os raios X ainda podem causar muitos danos aos tecidos.<\/p>\n<p><span>Nos pontos a seguir, tentamos expressar enormes faixas de exposi\u00e7\u00e3o \u00e0 radia\u00e7\u00e3o, bem como algumas doses de fontes m\u00e9dicas.<\/span><\/p>\n<ul>\n<li><strong><span>1 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Comendo uma banana<\/span><\/li>\n<li><strong><span>1 \u00b5Sv &#8211; Radiografia de<\/span><\/strong><span>\u00a0extremidade (m\u00e3o, p\u00e9, etc.)<\/span><\/li>\n<li><strong><span>5 \u00b5Sv &#8211;<\/span><\/strong><span>\u00a0radiografia dent\u00e1ria<\/span><\/li>\n<li><strong><span>10 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Dose m\u00e9dia di\u00e1ria recebida do fundo natural<\/span><\/li>\n<li><strong><span>40 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Um voo de avi\u00e3o de 5 horas<\/span><\/li>\n<li><strong><span>100 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; radiografia de t\u00f3rax<\/span><\/li>\n<li><strong><span>600 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; mamografia<\/span><\/li>\n<li><strong><span>1 000 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Limite de dose para membros individuais do p\u00fablico, dose efetiva total por ano<\/span><\/li>\n<li><strong><span>3 650 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Dose m\u00e9dia anual recebida do fundo natural<\/span><\/li>\n<li><strong><span>5 800 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; tomografia computadorizada do t\u00f3rax<\/span><\/li>\n<li><strong><span>10 000 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Dose m\u00e9dia anual recebida do ambiente natural em Ramsar, Ir\u00e3<\/span><\/li>\n<li><strong><span>20 000 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; tomografia computadorizada de corpo inteiro<\/span><\/li>\n<li><strong><span>80 000 \u00b5Sv &#8211;<\/span><\/strong><span>\u00a0A dose local anual para manchas localizadas nas bifurca\u00e7\u00f5es dos br\u00f4nquios segmentares nos pulm\u00f5es causadas pelo fumo de cigarros (1,5 ma\u00e7os \/ dia).<\/span><\/li>\n<li><strong><span>175 000 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Dose anual de radia\u00e7\u00e3o natural em uma praia de monazita perto de Guarapari, Brasil.<\/span><\/li>\n<li><strong><span>5 000 000 \u00b5Sv<\/span><\/strong><span>\u00a0&#8211; Dose que mata um ser humano com um risco de 50% dentro de 30 dias (LD50 \/ 30), se a dose for recebida por um per\u00edodo\u00a0<\/span><strong><span>muito curto<\/span><\/strong><span>\u00a0.<\/span><\/li>\n<\/ul>\n<p><span>Como pode ser visto, doses baixas s\u00e3o comuns na vida cotidiana.<\/span><\/p>\n<\/div>\n<p>&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;&#8230;.<\/p>\n<p>Este artigo \u00e9 baseado na tradu\u00e7\u00e3o autom\u00e1tica do artigo original em ingl\u00eas. Para mais informa\u00e7\u00f5es, consulte o artigo em ingl\u00eas. Voc\u00ea pode nos ajudar. Se voc\u00ea deseja corrigir a tradu\u00e7\u00e3o, envie-a para: translations@nuclear-power.com ou preencha o formul\u00e1rio de tradu\u00e7\u00e3o on-line. Agradecemos sua ajuda, atualizaremos a tradu\u00e7\u00e3o o mais r\u00e1pido poss\u00edvel. Obrigado.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Os raios X de diagn\u00f3stico usam uma dose muito pequena de radia\u00e7\u00e3o ionizante para produzir imagens do interior do corpo.\u00a0Os exames de diagn\u00f3stico por raio-X representam cerca de 90% da dose de radia\u00e7\u00e3o que a popula\u00e7\u00e3o recebe de fontes m\u00e9dicas.\u00a0Dosimetria de Radia\u00e7\u00e3o Os raios X de diagn\u00f3stico\u00a0usam uma dose muito pequena de radia\u00e7\u00e3o ionizante para &#8230; <a title=\"O que \u00e9 raio X de diagn\u00f3stico &#8211; Doses de radia\u00e7\u00e3o &#8211; Defini\u00e7\u00e3o\" class=\"read-more\" href=\"https:\/\/www.radiation-dosimetry.org\/pt-br\/o-que-e-raio-x-de-diagnostico-doses-de-radiacao-definicao\/\" aria-label=\"More on O que \u00e9 raio X de diagn\u00f3stico &#8211; Doses de radia\u00e7\u00e3o &#8211; Defini\u00e7\u00e3o\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[51],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>O que \u00e9 raio X de diagn\u00f3stico - Doses de radia\u00e7\u00e3o - Defini\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"Os raios X de diagn\u00f3stico usam uma dose muito pequena de radia\u00e7\u00e3o ionizante para produzir imagens do interior do corpo. 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