{"id":21332,"date":"2020-07-15T18:16:08","date_gmt":"2020-07-15T18:16:08","guid":{"rendered":"https:\/\/www.radiation-dosimetry.org\/quest-ce-quune-dose-equivalente-formule-equation-definition\/"},"modified":"2020-07-15T18:16:08","modified_gmt":"2020-07-15T18:16:08","slug":"quest-ce-quune-dose-equivalente-formule-equation-definition","status":"publish","type":"post","link":"http:\/\/www.radiation-dosimetry.org\/fr\/quest-ce-quune-dose-equivalente-formule-equation-definition\/","title":{"rendered":"Qu&rsquo;est-ce qu&rsquo;une dose \u00e9quivalente &#8211; Formule &#8211; \u00c9quation &#8211; D\u00e9finition"},"content":{"rendered":"<div class=\"su-quote su-quote-style-default\">\n<div class=\"su-quote-inner su-u-clearfix su-u-trim\">Formule de dose \u00e9quivalente &#8211; \u00c9quation.\u00a0Cet article r\u00e9sume les formules et les \u00e9quations cl\u00e9s qui peuvent \u00eatre utilis\u00e9es pour des calculs de dose \u00e9quivalente.\u00a0Dosim\u00e9trie des rayonnements<\/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><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Radiation-weighting-factors-current-ICRP.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-25310 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Radiation-weighting-factors-current-ICRP-300x159.png\" alt=\"Facteurs de pond\u00e9ration des rayonnements - courant - ICRP\" width=\"300\" height=\"159\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Radiation-weighting-factors-current-ICRP-300x159.png\" \/><\/a>La dose \u00e9quivalente<\/strong>\u00a0(symbole\u00a0<strong>H\u00a0<sub>T<\/sub>\u00a0)<\/strong>\u00a0est une quantit\u00e9 de dose calcul\u00e9e pour chaque organe (indice T &#8211; tissu).\u00a0<strong>La dose \u00e9quivalente<\/strong>\u00a0est bas\u00e9e sur la dose absorb\u00e9e par un organe, ajust\u00e9e pour tenir compte de l&rsquo;\u00a0<strong>efficacit\u00e9 du type de rayonnement<\/strong>\u00a0.\u00a0Dose \u00e9quivalente est donn\u00e9e le symbole H\u00a0<sub>T<\/sub>\u00a0.\u00a0L&rsquo;unit\u00e9 SI de\u00a0<strong>H\u00a0<sub>T<\/sub><\/strong>\u00a0est le\u00a0<strong>sievert<\/strong>\u00a0(Sv) ou mais rem (roentgen \u00e9quivalent man) est encore couramment utilis\u00e9 (\u00a0<strong>1 Sv = 100 rem<\/strong>\u00a0).\u00a0La dose pond\u00e9r\u00e9e a \u00e9t\u00e9 d\u00e9sign\u00e9e comme la dose \u00e9quivalente d&rsquo;organe ou de tissu:<\/p>\n<p><a href=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-equation-definition.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-25373 lazy-loaded\" src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-equation-definition.png\" alt=\"dose \u00e9quivalente - \u00e9quation - d\u00e9finition\" width=\"444\" height=\"159\" data-lazy-type=\"image\" data-src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-equation-definition.png\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-definition-min.png\"><img loading=\"lazy\" class=\"alignright size-medium wp-image-25395 lazy-loaded\" src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-definition-min-300x267.png\" alt=\"dose \u00e9quivalente - d\u00e9finition\" width=\"300\" height=\"267\" data-lazy-type=\"image\" data-src=\"https:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-definition-min-300x267.png\" \/><\/a><\/p>\n<p>Une dose d&rsquo;\u00a0\u00a0<strong>un Sv<\/strong>\u00a0\u00a0caus\u00e9e par un rayonnement gamma \u00e9quivaut \u00e0 un d\u00e9p\u00f4t d&rsquo;\u00e9nergie d&rsquo;un joule dans un kilogramme de tissu.\u00a0Cela signifie qu&rsquo;un sievert \u00e9quivaut \u00e0 un gray de rayons gamma d\u00e9pos\u00e9s dans certains tissus.\u00a0D&rsquo;un autre c\u00f4t\u00e9, des dommages biologiques similaires (un sievert) ne peuvent \u00eatre caus\u00e9s que par 1\/20 gray de rayonnement alpha.<\/p>\n<p>Un sievert est une grande quantit\u00e9 de dose \u00e9quivalente.\u00a0Une personne qui a absorb\u00e9 une dose de 1 Sv pour tout le corps a absorb\u00e9 un joule d&rsquo;\u00e9nergie dans chaque kg de tissu corporel (en cas de rayons gamma).<\/p>\n<p><strong>Les doses \u00e9quivalentes<\/strong>\u00a0\u00a0mesur\u00e9es dans l&rsquo;industrie et la m\u00e9decine ont souvent des doses g\u00e9n\u00e9ralement inf\u00e9rieures \u00e0 un sievert, et les multiples suivants sont souvent utilis\u00e9s:<\/p>\n<p><strong>1 mSv (millisievert) = 1E-3 Sv<\/strong><\/p>\n<p><strong>1 \u00b5Sv (microsievert) = 1E-6 Sv<\/strong><\/p>\n<p>Les conversions des unit\u00e9s SI en d&rsquo;autres unit\u00e9s sont les suivantes:<\/p>\n<ul>\n<li>1 Sv = 100 rem<\/li>\n<li>1 mSv = 100 mrem<\/li>\n<\/ul>\n<h2>D\u00e9bit de dose \u00e9quivalent<\/h2>\n<p>Le\u00a0<strong>d\u00e9bit de dose \u00e9quivalent<\/strong>\u00a0est le d\u00e9bit auquel une dose \u00e9quivalente est re\u00e7ue.\u00a0Il s&rsquo;agit d&rsquo;une mesure de l&rsquo;intensit\u00e9 (ou de la force) de la dose de rayonnement.\u00a0Le d\u00e9bit de dose \u00e9quivalent est donc d\u00e9fini comme:<\/p>\n<p><a href=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-rate-definition.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-25386 lazy-loaded\" src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-rate-definition.png\" alt=\"d\u00e9bit de dose \u00e9quivalent - d\u00e9finition\" width=\"477\" height=\"161\" data-lazy-type=\"image\" data-src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-rate-definition.png\" \/><\/a><\/p>\n<p><span>Dans les unit\u00e9s conventionnelles, elle est mesur\u00e9e en mSv \/ s\u00a0<\/span><strong><span>,<\/span><\/strong><span>\u00a0\u00a0Sv \/ h, mrem \/ s ou rem \/ h.\u00a0\u00c9tant donn\u00e9 que la quantit\u00e9 d&rsquo;exposition aux rayonnements d\u00e9pend directement (lin\u00e9airement)\u00a0<\/span><strong><span>du temps que les<\/span><\/strong><span>\u00a0gens passent pr\u00e8s de la source de rayonnement, la dose absorb\u00e9e est \u00e9gale \u00e0 la force du champ de rayonnement (d\u00e9bit de dose) multipli\u00e9e par la dur\u00e9e du temps pass\u00e9 dans ce champ.\u00a0L&rsquo;exemple ci-dessus indique qu&rsquo;une personne peut s&rsquo;attendre \u00e0 recevoir une dose de 25 millirems en restant dans un champ de 50 millirems \/ heure pendant trente minutes.<\/span><\/p>\n<h2><span>Calcul du d\u00e9bit de dose blind\u00e9<\/span><\/h2>\n<p><span>Supposons la\u00a0<\/span><strong><span>source isotrope ponctuelle<\/span><\/strong><span>\u00a0qui contient\u00a0<\/span><strong><span>1,0 Ci de\u00a0<\/span><sup><span>137<\/span><\/sup><span>\u00a0Cs<\/span><\/strong><span>\u00a0, qui a une\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/radioactive-decay-law\/half-life\/\"><span>demi-vie<\/span><\/a><span>\u00a0de\u00a0<\/span><strong><span>30,2 ans<\/span><\/strong><span>\u00a0.\u00a0Notez que la relation entre la demi-vie et la quantit\u00e9 de\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atom-properties-of-atoms\/radionuclide-radioisotope\/\"><span>radionucl\u00e9ide<\/span><\/a><span>\u00a0n\u00e9cessaire pour donner une activit\u00e9 d&rsquo;\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/radiation-protection\/units-of-radioactivity\/curie-unit-of-radioactivity\/\"><span>un curie<\/span><\/a><span>\u00a0est indiqu\u00e9e ci-dessous.\u00a0Cette quantit\u00e9 de mati\u00e8re peut \u00eatre calcul\u00e9e en utilisant \u03bb, qui est la\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/radioactive-decay-law\/decay-constant\/\"><span>constante<\/span><\/a><span>\u00a0de\u00a0<a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/radioactive-decay-law\/decay-constant\/\">d\u00e9sint\u00e9gration<\/a>\u00a0de certains nucl\u00e9ides:<\/span><\/p>\n<p><a href=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Curie-Unit-of-Activity.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-24886 lazy-loaded\" src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Curie-Unit-of-Activity.png\" alt=\"Curie - Unit\u00e9 d'activit\u00e9\" width=\"378\" height=\"61\" data-lazy-type=\"image\" data-src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/Curie-Unit-of-Activity.png\" \/><\/a><\/p>\n<p><span>Environ 94,6 pour cent se d\u00e9sint\u00e8gre par\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radioactive-decay\/beta-decay-beta-radioactivity\/\"><span>\u00e9mission b\u00eata<\/span><\/a><span>\u00a0vers un\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atom-properties-of-atoms\/nuclides\/isomers\/\"><span>isom\u00e8re nucl\u00e9aire<\/span><\/a><span>\u00a0m\u00e9tastable\u00a0du baryum: le baryum-137m.\u00a0Le pic photonique principal de Ba-137m est de\u00a0<\/span><strong><span>662 keV<\/span><\/strong><span>\u00a0.\u00a0Pour ce calcul, supposons que toutes les d\u00e9sint\u00e9grations passent par ce canal.<\/span><\/p>\n<p><strong><span>Calculez le d\u00e9bit de dose de photons primaires<\/span><\/strong><span>\u00a0, en gray par heure (Gy.h\u00a0<\/span><sup><span>-1<\/span><\/sup><span>\u00a0), \u00e0 la surface ext\u00e9rieure d&rsquo;un blindage en plomb de 5 cm d&rsquo;\u00e9paisseur.\u00a0<\/span><strong><span>Calculez<\/span><\/strong>\u00a0<span>ensuite\u00a0<strong>le\u00a0<\/strong><\/span><strong><span>d\u00e9bit de dose \u00e9quivalent<\/span><\/strong><span>\u00a0.\u00a0Supposons que ce champ de rayonnement externe p\u00e9n\u00e8tre\u00a0<\/span><strong><span>uniform\u00e9ment<\/span><\/strong><span>\u00a0dans tout le corps.\u00a0Le d\u00e9bit de dose de photons primaires n\u00e9glige toutes les particules secondaires.\u00a0Supposons que la distance effective de la source au point de dose soit de\u00a0<\/span><strong><span>10 cm<\/span><\/strong><span>\u00a0.\u00a0Nous supposerons \u00e9galement que le point de dose est un tissu mou et qu&rsquo;il peut raisonnablement \u00eatre simul\u00e9 par l&rsquo;eau et nous utilisons le coefficient d&rsquo;absorption d&rsquo;\u00e9nergie de masse pour l&rsquo;eau.<\/span><\/p>\n<p><span>Voir aussi:\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/interaction-radiation-matter\/interaction-gamma-radiation-matter\/gamma-ray-attenuation\/\"><span>Att\u00e9nuation des rayons gamma<\/span><\/a><\/p>\n<p><span>Voir aussi:\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/radiation\/shielding-of-ionizing-radiation\/shielding-gamma-radiation\/\"><span>Blindage des rayons gamma<\/span><\/a><\/p>\n<p><strong><span>Solution:<\/span><\/strong><\/p>\n<p><span>Le d\u00e9bit de dose des photons primaires est\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/interaction-radiation-matter\/interaction-gamma-radiation-matter\/gamma-ray-attenuation\/\"><span>att\u00e9nu\u00e9 de fa\u00e7on exponentielle<\/span><\/a><span>\u00a0, et le d\u00e9bit de dose des photons primaires, en tenant compte du blindage, est donn\u00e9 par:<\/span><\/p>\n<p><a href=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/dose-rate-calculation.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-25304 lazy-loaded\" src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/dose-rate-calculation.png\" alt=\"calcul du d\u00e9bit de dose\" width=\"671\" height=\"307\" data-lazy-type=\"image\" data-src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/dose-rate-calculation.png\" \/><\/a><\/p>\n<p><span>Comme on peut le voir, nous ne tenons pas compte de l&rsquo;accumulation de rayonnement secondaire.\u00a0Si des particules secondaires sont produites ou si le rayonnement primaire change d&rsquo;\u00e9nergie ou de direction, l&rsquo;att\u00e9nuation effective sera alors beaucoup moins importante.\u00a0Cette hypoth\u00e8se sous-estime g\u00e9n\u00e9ralement le v\u00e9ritable d\u00e9bit de dose, en particulier pour les \u00e9crans \u00e9pais et lorsque le point de dose est proche de la surface de l&rsquo;\u00e9cran, mais cette hypoth\u00e8se simplifie tous les calculs.\u00a0Dans ce cas, le v\u00e9ritable d\u00e9bit de dose (avec l&rsquo;accumulation de rayonnement secondaire) sera plus de deux fois plus \u00e9lev\u00e9.<\/span><\/p>\n<p><span>Pour calculer le\u00a0<\/span><strong><span>d\u00e9bit de dose absorb\u00e9<\/span><\/strong><span>\u00a0, nous devons utiliser dans la formule:<\/span><\/p>\n<ul>\n<li><span>k = 5,76 x 10\u00a0<\/span><sup><span>-7<\/span><\/sup><\/li>\n<li><span>S = 3,7 x 10\u00a0<\/span><sup><span>10<\/span><\/sup><span>\u00a0s\u00a0<\/span><sup><span>-1<\/span><\/sup><\/li>\n<li><span>E = 0,662 MeV<\/span><\/li>\n<li><span>\u03bc\u00a0<\/span><sub><span>t<\/span><\/sub><span>\u00a0\/ \u03c1 =\u00a0<\/span><sup>\u00a0<\/sup><span>0,0326 cm\u00a0<\/span><sup><span>2<\/span><\/sup><span>\u00a0\/ g (les valeurs sont disponibles au NIST)<\/span><\/li>\n<li><span>\u03bc = 1,289 cm\u00a0<\/span><sup><span>-1<\/span><\/sup><span>\u00a0(les valeurs sont disponibles au NIST)<\/span><\/li>\n<li><span>D = 5 cm<\/span><\/li>\n<li><span>r = 10 cm<\/span><\/li>\n<\/ul>\n<p><strong><span>R\u00e9sultat:<\/span><\/strong><\/p>\n<p><span>Le d\u00e9bit de dose absorb\u00e9 r\u00e9sultant en gray par heure est alors:<\/span><\/p>\n<p><a href=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/absorbed-dose-rate-gray-calculation-1.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-25319 lazy-loaded\" src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/absorbed-dose-rate-gray-calculation-1.png\" alt=\"d\u00e9bit de dose absorb\u00e9 - gray - calcul\" width=\"551\" height=\"153\" data-lazy-type=\"image\" data-src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/absorbed-dose-rate-gray-calculation-1.png\" \/><\/a><\/p>\n<p><span>\u00c9tant donn\u00e9 que le facteur de pond\u00e9ration de rayonnement pour les rayons gamma est \u00e9gal \u00e0 un et que nous avons suppos\u00e9 le champ de rayonnement uniforme, nous pouvons calculer directement le d\u00e9bit de dose \u00e9quivalent \u00e0 partir du d\u00e9bit de dose absorb\u00e9 comme suit:<\/span><\/p>\n<p><a href=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-sievert-calculation.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-25390 lazy-loaded\" src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-sievert-calculation.png\" alt=\"dose \u00e9quivalente - sievert - calcul\" width=\"463\" height=\"74\" data-lazy-type=\"image\" data-src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/equivalent-dose-sievert-calculation.png\" \/><\/a><\/p>\n<p><span>Si nous voulons tenir compte de l&rsquo;accumulation de rayonnement secondaire, nous devons inclure le facteur d&rsquo;accumulation.\u00a0La\u00a0<\/span><strong><span>formule \u00e9tendue<\/span><\/strong><span>\u00a0pour le d\u00e9bit de dose est alors:<\/span><\/p>\n<p><a href=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/absorbed-dose-rate-gray-calculation.png\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-25303 lazy-loaded\" src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/absorbed-dose-rate-gray-calculation.png\" alt=\"d\u00e9bit de dose absorb\u00e9 - gris\" width=\"693\" height=\"158\" data-lazy-type=\"image\" data-src=\"http:\/\/www.radiation-dosimetry.org\/wp-content\/uploads\/2019\/12\/absorbed-dose-rate-gray-calculation.png\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<\/div>\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>Cet article est bas\u00e9 sur la traduction automatique de l&rsquo;article original en anglais. Pour plus d&rsquo;informations, voir l&rsquo;article en anglais. Pouvez vous nous aider Si vous souhaitez corriger la traduction, envoyez-la \u00e0 l&rsquo;adresse: translations@nuclear-power.com ou remplissez le formulaire de traduction en ligne. Nous appr\u00e9cions votre aide, nous mettrons \u00e0 jour la traduction le plus rapidement possible. Merci<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Formule de dose \u00e9quivalente &#8211; \u00c9quation.\u00a0Cet article r\u00e9sume les formules et les \u00e9quations cl\u00e9s qui peuvent \u00eatre utilis\u00e9es pour des calculs de dose \u00e9quivalente.\u00a0Dosim\u00e9trie des rayonnements La dose \u00e9quivalente\u00a0(symbole\u00a0H\u00a0T\u00a0)\u00a0est une quantit\u00e9 de dose calcul\u00e9e pour chaque organe (indice T &#8211; tissu).\u00a0La dose \u00e9quivalente\u00a0est bas\u00e9e sur la dose absorb\u00e9e par un organe, ajust\u00e9e pour tenir compte &#8230; <a title=\"Qu&rsquo;est-ce qu&rsquo;une dose \u00e9quivalente &#8211; Formule &#8211; \u00c9quation &#8211; D\u00e9finition\" class=\"read-more\" href=\"http:\/\/www.radiation-dosimetry.org\/fr\/quest-ce-quune-dose-equivalente-formule-equation-definition\/\" aria-label=\"En savoir plus sur Qu&rsquo;est-ce qu&rsquo;une dose \u00e9quivalente &#8211; Formule &#8211; \u00c9quation &#8211; D\u00e9finition\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[49],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce qu&#039;une dose \u00e9quivalente - Formule - \u00c9quation - D\u00e9finition<\/title>\n<meta name=\"description\" content=\"Formule de dose \u00e9quivalente - \u00c9quation. 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