{"id":23014,"date":"2024-02-17T10:41:06","date_gmt":"2024-02-17T05:11:06","guid":{"rendered":"https:\/\/johnsonfrancis.org\/general\/?p=23014"},"modified":"2024-02-17T11:00:07","modified_gmt":"2024-02-17T05:30:07","slug":"what-is-photon-counting-ct","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/","title":{"rendered":"What is Photon Counting CT?"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/K4HFRDkydwI?si=X7IZL8y8tN2cCLE6\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><br \/>\nPhoton counting CT converts X-rays directly to electronic signals unlike conventional CT which converts X-rays first to light and then to electronic signals. Direct\u00a0 conversion allows low energy photons to be differentiated from electronic noise. When data is acquired directly from photons of different energy levels, better contrast-to-noise ratio can be realized. Photon counting CT has a potential for multiple energy reconstructions from the same scan data which enables calcium maps, measurement of extracellular volume and coronary plaque quantification. Decrease in image noise reduces the impact of calcium and metallic artifacts on image quality. Anyone who has seen a CT image of a person with a pacemaker would have noted the blooming effect of the metallic components. Photon counting CT promises lower radiation doses in addition to better resolution.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Photon counting CT converts X-rays directly to electronic signals unlike conventional CT which converts X-rays first to light and then to electronic signals. Direct\u00a0 conversion allows low energy photons to be differentiated from electronic noise. When data is acquired directly from photons of different energy levels, better contrast-to-noise ratio can be realized. Photon counting CT [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":23016,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-23014","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is Photon Counting CT? - All About Heart And Blood Vessels<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Photon Counting CT? - All About Heart And Blood Vessels\" \/>\n<meta property=\"og:description\" content=\"Photon counting CT converts X-rays directly to electronic signals unlike conventional CT which converts X-rays first to light and then to electronic signals. Direct\u00a0 conversion allows low energy photons to be differentiated from electronic noise. When data is acquired directly from photons of different energy levels, better contrast-to-noise ratio can be realized. Photon counting CT [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Heart And Blood Vessels\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-17T05:11:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-17T05:30:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/general\/wp-content\/uploads\/2024\/02\/What-is-Photon-Counting-CT.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"893\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#\\\/schema\\\/person\\\/f35ea33ecf9c9923597de2691ebed1a7\"},\"headline\":\"What is Photon Counting CT?\",\"datePublished\":\"2024-02-17T05:11:06+00:00\",\"dateModified\":\"2024-02-17T05:30:07+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/\"},\"wordCount\":134,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/What-is-Photon-Counting-CT.jpg\",\"articleSection\":[\"General\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/\",\"name\":\"What is Photon Counting CT? - All About Heart And Blood Vessels\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/What-is-Photon-Counting-CT.jpg\",\"datePublished\":\"2024-02-17T05:11:06+00:00\",\"dateModified\":\"2024-02-17T05:30:07+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#\\\/schema\\\/person\\\/f35ea33ecf9c9923597de2691ebed1a7\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#primaryimage\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/What-is-Photon-Counting-CT.jpg\",\"contentUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/What-is-Photon-Counting-CT.jpg\",\"width\":1200,\"height\":893},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/what-is-photon-counting-ct\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What is Photon Counting CT?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#website\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/\",\"name\":\"All About Heart And Blood Vessels\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#\\\/schema\\\/person\\\/f35ea33ecf9c9923597de2691ebed1a7\",\"name\":\"Johnson Francis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"caption\":\"Johnson Francis\"},\"description\":\"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/author\\\/jf\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What is Photon Counting CT? - All About Heart And Blood Vessels","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/","og_locale":"en_US","og_type":"article","og_title":"What is Photon Counting CT? - All About Heart And Blood Vessels","og_description":"Photon counting CT converts X-rays directly to electronic signals unlike conventional CT which converts X-rays first to light and then to electronic signals. Direct\u00a0 conversion allows low energy photons to be differentiated from electronic noise. When data is acquired directly from photons of different energy levels, better contrast-to-noise ratio can be realized. Photon counting CT [&hellip;]","og_url":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/","og_site_name":"All About Heart And Blood Vessels","article_published_time":"2024-02-17T05:11:06+00:00","article_modified_time":"2024-02-17T05:30:07+00:00","og_image":[{"width":1200,"height":893,"url":"https:\/\/johnsonfrancis.org\/general\/wp-content\/uploads\/2024\/02\/What-is-Photon-Counting-CT.jpg","type":"image\/jpeg"}],"author":"Johnson Francis","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Johnson Francis","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/general\/#\/schema\/person\/f35ea33ecf9c9923597de2691ebed1a7"},"headline":"What is Photon Counting CT?","datePublished":"2024-02-17T05:11:06+00:00","dateModified":"2024-02-17T05:30:07+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/"},"wordCount":134,"commentCount":0,"image":{"@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/general\/wp-content\/uploads\/2024\/02\/What-is-Photon-Counting-CT.jpg","articleSection":["General"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/","url":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/","name":"What is Photon Counting CT? - All About Heart And Blood Vessels","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/general\/#website"},"primaryImageOfPage":{"@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#primaryimage"},"image":{"@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/general\/wp-content\/uploads\/2024\/02\/What-is-Photon-Counting-CT.jpg","datePublished":"2024-02-17T05:11:06+00:00","dateModified":"2024-02-17T05:30:07+00:00","author":{"@id":"https:\/\/johnsonfrancis.org\/general\/#\/schema\/person\/f35ea33ecf9c9923597de2691ebed1a7"},"breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#primaryimage","url":"https:\/\/johnsonfrancis.org\/general\/wp-content\/uploads\/2024\/02\/What-is-Photon-Counting-CT.jpg","contentUrl":"https:\/\/johnsonfrancis.org\/general\/wp-content\/uploads\/2024\/02\/What-is-Photon-Counting-CT.jpg","width":1200,"height":893},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/general\/what-is-photon-counting-ct\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/general\/"},{"@type":"ListItem","position":2,"name":"What is Photon Counting CT?"}]},{"@type":"WebSite","@id":"https:\/\/johnsonfrancis.org\/general\/#website","url":"https:\/\/johnsonfrancis.org\/general\/","name":"All About Heart And Blood Vessels","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/johnsonfrancis.org\/general\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/johnsonfrancis.org\/general\/#\/schema\/person\/f35ea33ecf9c9923597de2691ebed1a7","name":"Johnson Francis","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","caption":"Johnson Francis"},"description":"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal","url":"https:\/\/johnsonfrancis.org\/general\/author\/jf\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts\/23014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/comments?post=23014"}],"version-history":[{"count":3,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts\/23014\/revisions"}],"predecessor-version":[{"id":23019,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts\/23014\/revisions\/23019"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/media\/23016"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/media?parent=23014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/categories?post=23014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/tags?post=23014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}