{"id":9291,"date":"2023-10-08T08:27:47","date_gmt":"2023-10-07T23:27:47","guid":{"rendered":"https:\/\/cardiovascularcenter.luke.ac.jp\/ihd_exam\/"},"modified":"2025-04-03T13:57:15","modified_gmt":"2025-04-03T04:57:15","slug":"ihd_exam","status":"publish","type":"page","link":"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/ihd_exam\/","title":{"rendered":"Ischemic Heart Disease &#8211; About the Examinations"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"9291\" class=\"elementor elementor-9291 elementor-5811\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-252b48a5 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"252b48a5\" data-element_type=\"section\" 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class=\"elementor-section elementor-top-section elementor-element elementor-element-8a035fd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8a035fd\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-986203e\" data-id=\"986203e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-de3203f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"de3203f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element 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aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-959a172\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-9444\"><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/overview\/\" class=\"elementor-item\" tabindex=\"-1\">About<\/a><\/li>\n<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9445\"><a href=\"\/en\/treatments\" class=\"elementor-item\" tabindex=\"-1\">Medical Services<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-9446\"><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/staff\/\" class=\"elementor-item\" tabindex=\"-1\">Our Team<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-9447\"><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/outpatient_service\/\" class=\"elementor-item\" tabindex=\"-1\">Outpatient Schedule<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-9448\"><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/consultation\/\" class=\"elementor-item\" tabindex=\"-1\">Consultations<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-9449\"><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/treatments\/sdm\/\" class=\"elementor-item\" tabindex=\"-1\">SDM Clinic<\/a><\/li>\n<li class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-9450\"><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/frequently_asked_questions\/\" class=\"elementor-item\" tabindex=\"-1\">FAQ<\/a><\/li>\n<li class=\"menu-item wpml-ls-slot-17 wpml-ls-item wpml-ls-item-ja wpml-ls-menu-item wpml-ls-first-item wpml-ls-last-item menu-item-type-wpml_ls_menu_item menu-item-object-wpml_ls_menu_item menu-item-wpml-ls-17-ja\"><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/\" title=\"Switch to \u65e5\u672c\u8a9e\" aria-label=\"Switch to \u65e5\u672c\u8a9e\" role=\"menuitem\" class=\"elementor-item\" tabindex=\"-1\"><span class=\"wpml-ls-native\" lang=\"ja\">\u65e5\u672c\u8a9e<\/span><\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-7a8801a\" data-id=\"7a8801a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f9c5075 elementor-widget elementor-widget-text-editor\" data-id=\"f9c5075\" data-element_type=\"widget\" id=\"top\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>For diagnosing ischemic heart disease, information such as &#8216;what are the symptoms&#8217;, &#8216;what triggers the symptoms&#8217;, and &#8216;underlying conditions like diabetes or chronic kidney disease&#8217; is crucial. Based on this information, we consider and propose the most appropriate examination method for each individual patient.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4e4187 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"e4e4187\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"#cardiogram\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"21\" height=\"21\" viewBox=\"0 0 21 21\" fill=\"none\"><rect width=\"21\" height=\"21\" rx=\"10.5\" fill=\"#E6E6E6\"><\/rect><path d=\"M10.6464 15.3536C10.8417 15.5488 11.1583 15.5488 11.3536 15.3536L14.5355 12.1716C14.7308 11.9763 14.7308 11.6597 14.5355 11.4645C14.3403 11.2692 14.0237 11.2692 13.8284 11.4645L11 14.2929L8.17157 11.4645C7.97631 11.2692 7.65973 11.2692 7.46447 11.4645C7.2692 11.6597 7.2692 11.9763 7.46447 12.1716L10.6464 15.3536ZM10.5 6L10.5 15L11.5 15L11.5 6L10.5 6Z\" fill=\"black\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Exercise Stress Electrocardiogram<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"#artery-ct\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"21\" height=\"21\" viewBox=\"0 0 21 21\" fill=\"none\"><rect width=\"21\" height=\"21\" rx=\"10.5\" fill=\"#E6E6E6\"><\/rect><path d=\"M10.6464 15.3536C10.8417 15.5488 11.1583 15.5488 11.3536 15.3536L14.5355 12.1716C14.7308 11.9763 14.7308 11.6597 14.5355 11.4645C14.3403 11.2692 14.0237 11.2692 13.8284 11.4645L11 14.2929L8.17157 11.4645C7.97631 11.2692 7.65973 11.2692 7.46447 11.4645C7.2692 11.6597 7.2692 11.9763 7.46447 12.1716L10.6464 15.3536ZM10.5 6L10.5 15L11.5 15L11.5 6L10.5 6Z\" fill=\"black\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Coronary CT Angiography (FFR<sub>CT<\/sub>)<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"#spect\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"21\" height=\"21\" viewBox=\"0 0 21 21\" fill=\"none\"><rect width=\"21\" height=\"21\" rx=\"10.5\" fill=\"#E6E6E6\"><\/rect><path d=\"M10.6464 15.3536C10.8417 15.5488 11.1583 15.5488 11.3536 15.3536L14.5355 12.1716C14.7308 11.9763 14.7308 11.6597 14.5355 11.4645C14.3403 11.2692 14.0237 11.2692 13.8284 11.4645L11 14.2929L8.17157 11.4645C7.97631 11.2692 7.65973 11.2692 7.46447 11.4645C7.2692 11.6597 7.2692 11.9763 7.46447 12.1716L10.6464 15.3536ZM10.5 6L10.5 15L11.5 15L11.5 6L10.5 6Z\" fill=\"black\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Myocardial Perfusion Imaging (SPECT)<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"#mri-exam\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"21\" height=\"21\" viewBox=\"0 0 21 21\" fill=\"none\"><rect width=\"21\" height=\"21\" rx=\"10.5\" fill=\"#E6E6E6\"><\/rect><path d=\"M10.6464 15.3536C10.8417 15.5488 11.1583 15.5488 11.3536 15.3536L14.5355 12.1716C14.7308 11.9763 14.7308 11.6597 14.5355 11.4645C14.3403 11.2692 14.0237 11.2692 13.8284 11.4645L11 14.2929L8.17157 11.4645C7.97631 11.2692 7.65973 11.2692 7.46447 11.4645C7.2692 11.6597 7.2692 11.9763 7.46447 12.1716L10.6464 15.3536ZM10.5 6L10.5 15L11.5 15L11.5 6L10.5 6Z\" fill=\"black\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Coronary MRI Examination<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"#catheterization\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"21\" height=\"21\" viewBox=\"0 0 21 21\" fill=\"none\"><rect width=\"21\" height=\"21\" rx=\"10.5\" fill=\"#E6E6E6\"><\/rect><path d=\"M10.6464 15.3536C10.8417 15.5488 11.1583 15.5488 11.3536 15.3536L14.5355 12.1716C14.7308 11.9763 14.7308 11.6597 14.5355 11.4645C14.3403 11.2692 14.0237 11.2692 13.8284 11.4645L11 14.2929L8.17157 11.4645C7.97631 11.2692 7.65973 11.2692 7.46447 11.4645C7.2692 11.6597 7.2692 11.9763 7.46447 12.1716L10.6464 15.3536ZM10.5 6L10.5 15L11.5 15L11.5 6L10.5 6Z\" fill=\"black\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Coronary Angiography (Catheter Examination)<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"#qfr\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"21\" height=\"21\" viewBox=\"0 0 21 21\" fill=\"none\"><rect width=\"21\" height=\"21\" rx=\"10.5\" fill=\"#E6E6E6\"><\/rect><path d=\"M10.6464 15.3536C10.8417 15.5488 11.1583 15.5488 11.3536 15.3536L14.5355 12.1716C14.7308 11.9763 14.7308 11.6597 14.5355 11.4645C14.3403 11.2692 14.0237 11.2692 13.8284 11.4645L11 14.2929L8.17157 11.4645C7.97631 11.2692 7.65973 11.2692 7.46447 11.4645C7.2692 11.6597 7.2692 11.9763 7.46447 12.1716L10.6464 15.3536ZM10.5 6L10.5 15L11.5 15L11.5 6L10.5 6Z\" fill=\"black\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">QFR (Low-burden Coronary Blood Flow Evaluation Method)<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a1f7ad elementor-widget elementor-widget-text-editor\" data-id=\"0a1f7ad\" data-element_type=\"widget\" id=\"cardiogram\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><span style=\"color: #333399;\">Exercise Stress Electrocardiogram<\/span><\/h4>\n<p><b>This is an examination that measures the electrocardiogram while exercising. It is relatively simple and does not involve radiation exposure or drug administration.<\/b><\/p>\n<p>By walking on a treadmill (like those in a gym), or in some cases brisk walking, we can observe changes in the ECG during exercise to estimate the presence of ischemic heart disease. While this test is simple and doesn&#8217;t involve medication or radiation exposure, its accuracy is somewhat lower compared to other tests. Therefore, we select the appropriate test based on the individual situation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d5644b0 back-to-top elementor-widget elementor-widget-heading\" data-id=\"d5644b0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\"><a href=\"#top\">TOP<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d0a5c29 elementor-widget elementor-widget-text-editor\" data-id=\"d0a5c29\" data-element_type=\"widget\" id=\"artery-ct\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><span style=\"color: #333399;\">Coronary CT Angiography (FFR<sub>CT<\/sub>)<\/span><\/h4>\n<b>This is a relatively simple and highly accurate examination that can visualize not only narrowed areas of the heart&#8217;s blood vessels (coronary arteries) but also the degree and nature of arteriosclerosis.<\/b>\n\nThis examination uses CT (Computed Tomography) to visualize the coronary arteries. With advancements in equipment, coronary CT can clearly depict the condition of thin coronary arteries about 2-4mm in diameter, allowing us to instantly see which parts of the coronary arteries have issues. In addition to identifying narrowed blood vessels, it can simultaneously reveal the nature of plaques in the coronary arteries (whether they are prone to rupture or heavily calcified). While this examination involves a certain amount of radiation exposure (equivalent to or less than CT scans of other organs), it causes little discomfort to patients. Due to its high diagnostic accuracy, its use is expanding worldwide.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d9bc50 elementor-widget elementor-widget-image\" data-id=\"3d9bc50\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"500\" height=\"321\" src=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-3-500x321.jpg\" class=\"attachment-medium size-medium wp-image-8865\" alt=\"\" srcset=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-3-500x321.jpg 500w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-3-1024x658.jpg 1024w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-3-768x494.jpg 768w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-3.jpg 1108w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1eb99fd elementor-widget elementor-widget-text-editor\" data-id=\"1eb99fd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Additionally, this examination can be supplemented with an <a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/ffrct\/\">FFR<sub>CT<\/sub> examination<\/a>, which performs computer-based blood flow simulation on three-dimensional (3D) reconstructed CT images. The FFR<sub>CT<\/sub> examination can determine whether a narrowed vessel seen in the image is actually causing reduced blood flow, helping to decide if further invasive tests like catheterization are necessary.<br><br>For more details, please see <a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/ffrct\/\">here<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c94998 elementor-widget elementor-widget-image\" data-id=\"4c94998\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/ffrct\/\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"500\" height=\"365\" src=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-4-500x365.jpg\" class=\"attachment-medium size-medium wp-image-8866\" alt=\"\" srcset=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-4-500x365.jpg 500w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-4-1024x747.jpg 1024w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-4-768x560.jpg 768w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-4.jpg 1056w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dfae2b7 elementor-widget elementor-widget-text-editor\" data-id=\"dfae2b7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Coronary CT examination requires special CT equipment to capture images of the moving heart. Before the scan, medication is taken to slow the heart rate. As this test generally uses contrast agents, it cannot be performed on patients with allergies to iodine-based contrast agents or those with severely impaired kidney function.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-52a299f back-to-top elementor-widget elementor-widget-heading\" data-id=\"52a299f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\"><a href=\"#top\">TOP<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f3d9c5 elementor-widget elementor-widget-text-editor\" data-id=\"6f3d9c5\" data-element_type=\"widget\" id=\"spect\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><span style=\"color: #333399;\">Myocardial Perfusion Imaging (SPECT)<\/span><\/h4><p><b>This examination can confirm the extent of heart muscle (myocardium) exposed to reduced blood flow due to arteriosclerosis in the heart&#8217;s blood vessels (coronary arteries). It can be safely performed even on patients with severely impaired kidney function.<\/b><\/p><p>This test involves injecting a radioactive isotope during exercise stress or pharmacological stress to assess blood flow uptake in the myocardium (heart muscle). If the area of myocardium exposed to reduced blood flow (ischemia) due to narrowed coronary arteries is extensive, treatment options such as catheter intervention or bypass surgery may be considered. This examination typically involves two imaging sessions in one day: one after stress and one at rest. While it involves radiation exposure similar to coronary CT (effective dose of about 8 mSv), it has the advantage of not using contrast agents. Therefore, it can be performed on patients with severely impaired kidney function.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b0221a1 back-to-top elementor-widget elementor-widget-heading\" data-id=\"b0221a1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\"><a href=\"#top\">TOP<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-821663c elementor-widget elementor-widget-text-editor\" data-id=\"821663c\" data-element_type=\"widget\" id=\"mri-exam\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><span style=\"color: #333399;\">Cardiac MRI Examination<\/span><\/h4>\n<p><b>This examination does not involve radiation exposure and can visualize the heart&#8217;s blood vessels (coronary arteries) while also providing information about the heart muscle (myocardium).<\/b><\/p>\n<p>MRI examinations for the heart differ between those looking at the myocardium and those examining the coronary arteries. Coronary MRI examination (MRA) does not require contrast agents and has no radiation exposure. However, its image quality is lower compared to coronary CT, so the choice of examination is made based on the situation.<\/p>\n<p>There is also a perfusion MRI examination that can check if the blood flow uptake in the heart muscle (myocardium) has decreased due to narrowed coronary arteries. It can also confirm the extent of dead (necrotic) heart muscle cells after events like myocardial infarction. These examinations use MRI-specific gadolinium contrast agents.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f76a1c back-to-top elementor-widget elementor-widget-heading\" data-id=\"8f76a1c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\"><a href=\"#top\">TOP<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63e9f91 elementor-widget elementor-widget-text-editor\" data-id=\"63e9f91\" data-element_type=\"widget\" id=\"catheterization\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><span style=\"color: #333399;\">Coronary Angiography (Catheter Examination)<\/span><\/h4><p><b>This is the most accurate examination for assessing the condition of the heart&#8217;s blood vessels (coronary arteries) and is performed on patients with a high likelihood of ischemic heart disease. At our hospital, it can be done as a &#8216;day procedure&#8217; or with a &#8216;one-night, two-day hospitalization&#8217;.<\/b><\/p><p><strong>For more details about the examination and treatment process at our hospital, please refer to <a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/cath_our_hospital\/\">here<\/a>.<\/strong><\/p><p>When ischemic heart disease is suspected based on the above examinations, or in cases like acute myocardial infarction where ischemic heart disease is highly suspected without the need for the above tests, we perform catheter-based coronary angiography to confirm the presence of this disease. The catheter used in coronary angiography is a long, tubular device with a diameter of 1.3-1.7mm. It is often inserted through an artery in the wrist and guided through blood vessels to reach the heart, where it is inserted into the entrance of the coronary arteries. Contrast agent is injected through the catheter into the coronary arteries, and the condition of the coronary arteries is observed using X-ray fluoroscopy. This examination, which directly inserts a catheter into the coronary arteries for imaging, provides higher image quality and more accurate assessment of coronary artery condition compared to CT or MRI imaging of the coronary arteries.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a30ff8 elementor-widget elementor-widget-image\" data-id=\"0a30ff8\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"500\" height=\"349\" src=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-5-500x349.jpg\" class=\"attachment-medium size-medium wp-image-8867\" alt=\"\" srcset=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-5-500x349.jpg 500w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-5-1024x715.jpg 1024w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-5-768x536.jpg 768w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2022\/10\/post-img-5.jpg 1352w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d4e3673 elementor-widget elementor-widget-text-editor\" data-id=\"d4e3673\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Additionally, catheter examination includes a test called FFR, which measures how much blood flow is reduced in narrowed coronary artery lesions. It&#8217;s known that if blood flow is maintained even in narrowed vessels, the heart receives sufficient oxygen and nutrients, and in such cases, catheter treatment to widen the vessel is unnecessary (and would not be effective). Therefore, when moderate coronary artery stenosis is found, FFR examination is crucial for determining the need for catheter treatment*. In FFR examination, a thin (0.36mm) wire called a pressure wire, equipped with a pressure sensor, is passed through the coronary artery lesion. The pressure measured within the coronary artery is used to calculate the degree of blood flow reduction using a specialized machine (console).<\/p><p>At our center, catheter examinations are performed as either a &#8216;day procedure&#8217; or a &#8216;one-night, two-day hospitalization&#8217;. For day procedures, patients typically arrive in the morning and return home in the early afternoon (we do not perform day-procedure treatments).<\/p><p>* In cases where angiography shows severe narrowing (over 90% stenosis), it&#8217;s clear that blood flow is reduced, so this type of examination may not be performed. Also, if reduced coronary blood flow (ischemia) has been confirmed by FFRCT examination, myocardial perfusion imaging, or perfusion MRI, FFR examination is usually not performed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53bb053 back-to-top elementor-widget elementor-widget-heading\" data-id=\"53bb053\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\"><a href=\"#top\">TOP<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d739c7 elementor-widget elementor-widget-text-editor\" data-id=\"5d739c7\" data-element_type=\"widget\" id=\"qfr\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/qfr\/\">QFR (Low-burden Coronary Blood Flow Evaluation Method)<\/a><\/h4>\n<h5><a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/qfr\/\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-6290 size-medium\" src=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2024\/03\/QFRHP-500x281.jpg\" alt=\"\" width=\"500\" height=\"281\" srcset=\"https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2024\/03\/QFRHP-500x281.jpg 500w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2024\/03\/QFRHP-1024x576.jpg 1024w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2024\/03\/QFRHP-768x432.jpg 768w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2024\/03\/QFRHP-1536x864.jpg 1536w, https:\/\/cardiovascularcenter.luke.ac.jp\/wpdata\/wp-content\/uploads\/2024\/03\/QFRHP-2048x1152.jpg 2048w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><\/h5>\n<p>For more details, please see <a href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/qfr\/\">here<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f493776 back-to-top elementor-widget elementor-widget-heading\" data-id=\"f493776\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\"><a href=\"#top\">TOP<\/a><\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5c58af7 elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"5c58af7\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-12d0d1f8\" data-id=\"12d0d1f8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-35f56bcd elementor-align-center elementor-widget elementor-widget-button\" data-id=\"35f56bcd\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-shrink\" href=\"https:\/\/cardiovascularcenter.luke.ac.jp\/en\/treatments\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-arrow-circle-left\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Return to Main Diseases<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>For diagnosing ischemic heart disease, information such as &#8216;what are the symptoms&#8217;, &#8216;what triggers the symptoms&#8217;, and &#8216;underlying conditions like diabetes or chronic kidney disease&#8217; is crucial. Based on this information, we consider and propose the most appropriate examination method for each individual patient. Exercise Stress Electrocardiogram Coronary CT Angiography (FFRCT) Myocardial Perfusion Imaging (SPECT) [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-9291","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ischemic Heart Disease - About the Examinations - \u8056\u8def\u52a0\u56fd\u969b\u75c5\u9662 \u5fc3\u8840\u7ba1\u30bb\u30f3\u30bf\u30fc<\/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:\/\/cardiovascularcenter.luke.ac.jp\/en\/ihd_exam\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ischemic Heart Disease - About the Examinations - \u8056\u8def\u52a0\u56fd\u969b\u75c5\u9662 \u5fc3\u8840\u7ba1\u30bb\u30f3\u30bf\u30fc\" \/>\n<meta property=\"og:description\" content=\"For diagnosing ischemic heart disease, information such as &#8216;what are the symptoms&#8217;, &#8216;what triggers the symptoms&#8217;, and &#8216;underlying conditions like diabetes or chronic kidney disease&#8217; is crucial. Based on this information, we consider and propose the most appropriate examination method for each individual patient. 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