{"id":4485,"date":"2023-08-21T19:13:36","date_gmt":"2023-08-21T19:13:36","guid":{"rendered":"https:\/\/dailyai.com\/?p=4485"},"modified":"2023-08-22T08:52:13","modified_gmt":"2023-08-22T08:52:13","slug":"ai-tool-for-diagnosing-heart-age-is-put-to-the-test","status":"publish","type":"post","link":"https:\/\/dailyai.com\/fr\/2023\/08\/ai-tool-for-diagnosing-heart-age-is-put-to-the-test\/","title":{"rendered":"Un outil d'IA pour diagnostiquer l'\u00e2ge cardiaque est mis \u00e0 l'\u00e9preuve"},"content":{"rendered":"<p><b>Un outil d'IA innovant peut r\u00e9v\u00e9ler comment des choix de vie tels que la consommation d'alcool, le tabagisme, une mauvaise alimentation et l'inactivit\u00e9 peuvent faire vieillir pr\u00e9matur\u00e9ment le c\u0153ur d'une personne.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Cette IA \u00e9tait <\/span><a href=\"https:\/\/lms.mrc.ac.uk\/research-group\/computational-cardiac-imaging\/\"><span style=\"font-weight: 400;\">d\u00e9velopp\u00e9 par une \u00e9quipe dirig\u00e9e<\/span><\/a><span style=\"font-weight: 400;\"> par le professeur Declan O'Regan de l'Institut des sciences m\u00e9dicales de Londres du Medical Research Council.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pallab Ghosh, correspondant scientifique de la BBC, curieux de sa propre sant\u00e9 cardiaque, <a href=\"https:\/\/www.bbc.co.uk\/news\/science-environment-66565333\">s'est port\u00e9 volontaire pour faire l'exp\u00e9rience<\/a> cette \u00e9valuation de l'IA \u00e0 la pointe de la technologie.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le professeur O'Regan, chef de l'\u00e9quipe, a expliqu\u00e9 l'importance de cet outil en d\u00e9clarant : \"Lorsque nous regardons le visage d'une personne, nous sommes capables de juger si elle a l'air jeune ou vieille pour son \u00e2ge - nos organes sont pareils\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Et de poursuivre : \"Certaines personnes ont un c\u0153ur beaucoup plus jeune, tandis que d'autres ont un c\u0153ur qui a vieilli pr\u00e9matur\u00e9ment et qui est plus sujet aux maladies. Nous voulons donc d\u00e9couvrir quels sont ces facteurs\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bien qu'il existe plusieurs m\u00e9thodes d'analyse de la sant\u00e9 cardiaque, comme les scanners, les ECG et les mesures de la pression art\u00e9rielle, ces m\u00e9thodes sont toutes soumises \u00e0 des limitations et ne permettent g\u00e9n\u00e9ralement de d\u00e9tecter que les probl\u00e8mes et les anomalies les plus graves. M\u00eame les probl\u00e8mes mineurs passent souvent inaper\u00e7us aux yeux des cardiologues.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Comme le souligne le professeur O'Regan, cette IA r\u00e9v\u00e8le \"les coups et les \u00e9raflures accumul\u00e9s au cours d'une vie, \u00e0 cause de l'alcool, du tabac, d'une mauvaise alimentation et d'un manque d'exercice\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Apr\u00e8s avoir pass\u00e9 une IRM apr\u00e8s l'exercice et effectu\u00e9 diverses actions, le syst\u00e8me d'IA a analys\u00e9 le scanner de M. Ghosh. Les r\u00e9sultats ont \u00e9t\u00e9 compar\u00e9s aux donn\u00e9es de 5 000 personnes ayant men\u00e9 une vie saine.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les r\u00e9sultats obtenus par M. Ghosh \u00e9taient plut\u00f4t encourageants. L'IA a d\u00e9termin\u00e9 que l'\u00e2ge de son c\u0153ur \u00e9tait de 63 ans, soit un peu plus que son \u00e2ge r\u00e9el de 61 ans.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Lors d'une conversation avec le professeur O'Regan, M. Ghosh s'est demand\u00e9 si les changements positifs apport\u00e9s r\u00e9cemment \u00e0 son mode de vie n'auraient pas contribu\u00e9 \u00e0 att\u00e9nuer les effets de ses anciennes habitudes alimentaires. <\/span><span style=\"font-weight: 400;\">\"Nous ne savons pas si le vieillissement pr\u00e9matur\u00e9 du c\u0153ur est d\u00fb aux g\u00e8nes et si l'on na\u00eet destin\u00e9 \u00e0 avoir un c\u0153ur plus \u00e2g\u00e9, ou s'il est davantage li\u00e9 au mode de vie\", a r\u00e9pondu M. O'Regan.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Il ajoute : \"Nous ne savons pas non plus si le rythme du vieillissement peut \u00eatre modifi\u00e9 ou s'il peut \u00eatre r\u00e9versible, ce qui permettrait aux gens de retrouver un c\u0153ur plus jeune s'ils b\u00e9n\u00e9ficiaient d'un traitement appropri\u00e9.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les premi\u00e8res recherches indiquent que les g\u00e8nes li\u00e9s \u00e0 l'\u00e9lasticit\u00e9 des muscles sont des facteurs influents dans le vieillissement du c\u0153ur.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">De m\u00eame, certains g\u00e8nes li\u00e9s au syst\u00e8me immunitaire, qui peuvent involontairement provoquer une inflammation s'ils sont trop actifs, joueraient \u00e9galement un r\u00f4le.\u00a0<\/span><span style=\"font-weight: 400;\">Les g\u00e8nes qui font partie int\u00e9grante du transport des signaux \u00e9lectriques \u00e0 travers le c\u0153ur, assurant un rythme cardiaque r\u00e9gulier, font l'objet d'\u00e9tudes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Forts d'une meilleure compr\u00e9hension des influences g\u00e9n\u00e9tiques sur le vieillissement du c\u0153ur, le professeur O'Regan et son \u00e9quipe ont l'intention de mettre au point de nouveaux traitements cibl\u00e9s, comme il le d\u00e9crit : \"La g\u00e9n\u00e9tique pourrait nous aider \u00e0 ralentir ou \u00e0 inverser le vieillissement - et ces scanners pourraient \u00e9galement aider \u00e0 \u00e9valuer de nouvelles th\u00e9rapies, pour voir l'impact qu'elles ont sur les l\u00e9sions\".<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Fonctionnement du syst\u00e8me<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Le professeur O'Regan et son \u00e9quipe d\u00e9veloppent depuis plusieurs ann\u00e9es des syst\u00e8mes de diagnostic cardiologique par IA.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Voici l'aboutissement de leur travail :<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Analyse d'images du c\u0153ur<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">L'\u00e9quipe d'O'Regan r\u00e9volutionne la fa\u00e7on dont nous observons le c\u0153ur \u00e0 l'aide de l'apprentissage machine (ML), en particulier gr\u00e2ce \u00e0 l'apprentissage profond (deep learning).\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ils d\u00e9veloppent de nouvelles techniques d'analyse des donn\u00e9es d'IRM cardiaque pour comprendre les caract\u00e9ristiques complexes du c\u0153ur, telles que sa fonction, sa g\u00e9om\u00e9trie et les caract\u00e9ristiques de ses tissus.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cela permet de segmenter les mouvements du c\u0153ur et de les analyser de mani\u00e8re ind\u00e9pendante.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Pr\u00e9voir les \u00e9v\u00e9nements ind\u00e9sirables\u00a0<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">L'\u00e9quipe est \u00e9galement pionni\u00e8re dans l'utilisation de l'IA pour pr\u00e9dire les \u00e9v\u00e9nements ind\u00e9sirables dans les maladies cardiaques.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En utilisant des algorithmes d'apprentissage profond qui int\u00e8grent des donn\u00e9es complexes, notamment les ph\u00e9notypes de mouvement, la g\u00e9n\u00e9tique et les variables cliniques, ils parviennent \u00e0 une compr\u00e9hension plus nuanc\u00e9e de l'insuffisance cardiaque.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">L'objectif est de cr\u00e9er des syst\u00e8mes de raisonnement artificiel pour analyser et interpr\u00e9ter les scanners cardiaques.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Lien entre les g\u00e8nes et les maladies cardiaques<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Le groupe \u00e9tudie les raisons pour lesquelles les maladies cardiaques se manifestent diff\u00e9remment d'un individu \u00e0 l'autre en explorant le lien entre la g\u00e9n\u00e9tique et le c\u0153ur. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ils tentent de d\u00e9finir des classes de cardiomyopathie et de d\u00e9couvrir le r\u00f4le des variantes g\u00e9n\u00e9tiques dans la pr\u00e9disposition des individus \u00e0 certaines affections cardiaques.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Identifier les voies mol\u00e9culaires<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">En exploitant l'apprentissage automatique, l'\u00e9quipe m\u00e8ne des recherches \u00e0 grande \u00e9chelle pour trouver des g\u00e8nes qui pourraient \u00eatre cibl\u00e9s par de nouveaux m\u00e9dicaments afin de r\u00e9duire le risque de maladie cardiaque.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O'Regan et son \u00e9quipe ont mis au point divers logiciels et outils disponibles par l'interm\u00e9diaire du site Web de la Commission europ\u00e9enne. <\/span><a href=\"https:\/\/github.com\/UK-Digital-Heart-Project\"><span style=\"font-weight: 400;\">Projet UK Digital Heart GitHub<\/span><\/a><span style=\"font-weight: 400;\">permettant ainsi \u00e0 d'autres chercheurs d'exploiter leurs m\u00e9thodes.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Un outil d'IA innovant peut r\u00e9v\u00e9ler comment les choix de mode de vie tels que l'alcool, le tabac, une mauvaise alimentation et l'inactivit\u00e9 peuvent faire vieillir le c\u0153ur pr\u00e9matur\u00e9ment.  Cette IA a \u00e9t\u00e9 mise au point par une \u00e9quipe dirig\u00e9e par le professeur Declan O'Regan de l'Institut des sciences m\u00e9dicales de Londres du Conseil de la recherche m\u00e9dicale. Le correspondant scientifique de la BBC, Pallab Ghosh, curieux de sa propre sant\u00e9 cardiaque, s'est port\u00e9 volontaire pour faire l'exp\u00e9rience de cette \u00e9valuation de pointe par l'IA. Le chef d'\u00e9quipe, le professeur O'Regan, a expliqu\u00e9 l'importance de cet outil en d\u00e9clarant : \"Lorsque nous regardons le visage de quelqu'un, nous sommes capables de juger s'il a l'air jeune ou vieux pour son \u00e2ge - nos organes sont pareils\".\u00a0<\/p>","protected":false},"author":2,"featured_media":4489,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[203,204,105,101],"class_list":["post-4485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-biotech","tag-healthcare","tag-machine-learning","tag-medtech"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AI tool for diagnosing heart age is put to the test | DailyAI<\/title>\n<meta name=\"description\" content=\"An innovative AI tool can reveal how lifestyle choices like drinking, smoking, poor diet, and inactivity may age one&#039;s heart prematurely.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dailyai.com\/fr\/2023\/08\/ai-tool-for-diagnosing-heart-age-is-put-to-the-test\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AI tool for diagnosing heart age is put to the test | DailyAI\" \/>\n<meta property=\"og:description\" content=\"An innovative AI tool can reveal how lifestyle choices like drinking, smoking, poor diet, and inactivity may age one&#039;s heart prematurely.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/fr\/2023\/08\/ai-tool-for-diagnosing-heart-age-is-put-to-the-test\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" 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