{"id":10103,"date":"2011-08-01T12:39:12","date_gmt":"2011-08-01T07:09:12","guid":{"rendered":"http:\/\/cardiophile.org\/?p=6660"},"modified":"2023-09-06T20:11:21","modified_gmt":"2023-09-06T14:41:21","slug":"positron-emission-tomographic-pet-imaging-in-cardiology-2","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/positron-emission-tomographic-pet-imaging-in-cardiology-2\/","title":{"rendered":"Positron emission tomographic (PET) imaging in cardiology"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/iPHzPNXaoSg?si=PnrmqJ_RteAQHOBR\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<h2><span style=\"color: #008000;\">Positron emission tomographic (PET) imaging in cardiology<\/span><\/h2>\n<p>Positron emission tomography (PET) can measure both the myocardial perfusion and metabolism. Clinically available cardiac PET tracers include perfusion tracers like rubidium-82 and <sup>13<\/sup>N-ammonia as well as the metabolic tracer <sup>18<\/sup>Fluoro-2-deoxyglucose (FDG). High <sup>18<\/sup>FDG uptake is interpreted as myocardial inflammation. A matched metabolic and perfusion defect is taken as a scar. PET data can be acquired in dynamic mode so that it is possible to display myocardial perfusion and metabolism in absolute terms as milliliters per gram per minute of blood flow and moles per gram per minute of metabolism.<\/p>\n<p>PET perfusion tracers are classified as freely diffusible and non diffusible tracers. Freely diffusible tracers accumulate and wash out from the myocardial tissue as a function of blood flow. <sup>15<\/sup>O Water is a freely diffusible tracer. Non-diffusible tracers are retained in the myocardium as a function of the blood flow. Rubidium-82 and <sup>13<\/sup>N-ammonia are non-diffusible tracers. Uptake of rubidium-82 across the sarcolemmal membrane reflects active sodium potassium ATPase pump as rubidium-82 has biological properties similar to potassium.<\/p>\n<p>Some special subsets who are more likely to benefit from PET imaging are: obese persons, women, persons with previous non-diagnostic tests and persons with poor left ventricular function being planned for coronary revascularization [1]. These groups are those who are difficult to image with conventional single photon emission computed tomography (SPECT).<\/p>\n<p><strong><span style=\"color: #0000ff;\">Reference<\/span><\/strong><\/p>\n<ol>\n<li>Josef Machac. <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/15645392\/\">Cardiac Positron Emission Tomography Imaging<\/a>. Semin Nucl Med. 2005 Jan;35(1):17-36.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Positron emission tomography (PET) can measure both the myocardial perfusion and metabolism. <\/p>\n","protected":false},"author":1,"featured_media":60658,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[17],"tags":[1458,1521,2937],"class_list":["post-10103","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-positron-emission-tomography","tag-fdg","tag-fluoro-2-deoxyglucose","tag-positron-emission-tomography-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Positron emission tomographic (PET) imaging in cardiology<\/title>\n<meta name=\"description\" content=\"Positron emission tomographic (PET) imaging in cardiology: Positron emission tomography (PET) 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