{"id":50449,"date":"2025-04-25T21:28:00","date_gmt":"2025-04-26T01:28:00","guid":{"rendered":"https:\/\/www.hancockhealth.org\/mayo-health-library\/bone-scan\/"},"modified":"2026-02-04T11:41:40","modified_gmt":"2026-02-04T16:41:40","slug":"bone-scan","status":"publish","type":"mayo","link":"https:\/\/hancockhealth.apgar.digital\/ja\/mayo-health-library\/bone-scan\/","title":{"rendered":"Bone scan"},"content":{"rendered":"<div class=\"container mx-auto   wordpress-block wordpress- core-\">\n<p>A bone scan is a test that uses nuclear imaging to help diagnose and track several types of bone disease. Nuclear imaging involves using small amounts of radioactive substances, called radioactive tracers, a special camera that can detect the radioactivity and a computer. These tools are used together to see structures such as bones inside the body.<\/p>\n<p>The tracer is absorbed more by cells and tissues that are changing. As a result, a bone scan can be used to find the source of skeletal pain when the cause isn&#8217;t clear. The source of pain may be a bone infection or a bone injury that doesn&#8217;t show up on a standard X-ray.<\/p>\n<p>A bone scan also can be an important tool for detecting cancer that has spread to the bone from the tumor&#8217;s original location, such as the breast or prostate.<\/p>\n<p>A bone scan might help determine the cause of bone pain that can&#8217;t be explained. The test is sensitive to differences in bone metabolism, which the radioactive tracer highlights in the body. Scanning the whole skeleton helps in diagnosing a wide range of bone conditions, including:<\/p>\n<ul>\n<li>Fractures.<\/li>\n<li>Arthritis.<\/li>\n<li>Paget&#8217;s disease of bone.<\/li>\n<li>Cancer that begins in the bone.<\/li>\n<li>Cancer that has spread to bone from a different site.<\/li>\n<li>Infection of the joints, joint replacements or bones.<\/li>\n<\/ul>\n<p>Although the test relies on radioactive tracers to create the images, these tracers produce little radiation exposure &mdash; less than a <abbr title=\"computerized tomography\">CT<\/abbr> scan.<\/p>\n<p>You usually don&#8217;t need to restrict your diet or restrict activities before a bone scan. Tell your healthcare professional if you&#8217;ve taken a medicine containing bismuth, such as Pepto-Bismol, or if you&#8217;ve had an X-ray test using barium contrast material within the past four days. Barium and bismuth can interfere with bone scan results.<\/p>\n<p>Wear loose clothing and leave jewelry at home. You might be asked to wear a gown for the scan.<\/p>\n<p>Bone scans aren&#8217;t usually performed on people who are pregnant or nursing because of concerns about radiation exposure to the baby. Tell your healthcare professional if you are pregnant &mdash; or think you might be pregnant &mdash; or if you&#8217;re nursing.<\/p>\n<p>A bone scan procedure includes both an injection and the actual scan.<\/p>\n<h3>The injection<\/h3>\n<p>Tiny amounts of radioactive substances, called radioactive tracers, are injected into a vein in the hand or arm. The amount of time between the injection and scan varies, depending on the reason for the scan.<\/p>\n<p>Some images might be taken immediately after the injection. But the main images are taken 2 to 4 hours later to allow the tracer to circulate and be absorbed by your bones. You might be asked to drink several glasses of water while you wait.<\/p>\n<p>You&#8217;ll likely be asked to empty your bladder before the scan to remove racer from your body that&#8217;s not absorbed.<\/p>\n<h3>The scan<\/h3>\n<p>You&#8217;ll lie still on a table while an armlike device supporting a tracer-sensitive camera passes back and forth over your body. The scanning procedure can take up to an hour. The procedure is painless.<\/p>\n<p>Your healthcare professional might order a three-phase bone scan, which includes a series of images taken at different times. A number of images are taken as the tracer is injected, then shortly after the injection, and again 3 to 5 hours after the injection.<\/p>\n<p>To better see some bones in your body, your healthcare professional might order extra imaging called single-photon emission computerized tomography (SPECT). This imaging can help with conditions that are especially deep in the bone or in places that are difficult to see. During a <abbr title=\"single-photon emission computerized tomography\">SPECT<\/abbr> scan, the camera takes images as it rotates around your body.<\/p>\n<h3>\u30c6\u30b9\u30c8\u5f8c<\/h3>\n<p>A bone scan generally has no side effects, and no follow-up care is needed. You might be asked to drink a lot of water for the next day or two to flush the tracer from your system. The radioactivity from the tracer is usually removed completely two days after the scan.<\/p>\n<p>A specialist in reading images, called a radiologist, looks at the scans for evidence of bone metabolism that&#8217;s not typical.  These areas appear as darker &#8220;hot spots&#8221; and lighter &#8220;cold spots&#8221; where the tracers have or haven&#8217;t collected.<\/p>\n<p>Although a bone scan is sensitive to differences in bone metabolism, it&#8217;s less helpful in determining the cause of the differences. If you have a bone scan that shows hot spots, you might need more tests to determine the cause.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>This diagnostic test can be used to check for cancer that has spread to the bones, skeletal pain that can&#8217;t be explained, bone infection or a bone injury.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","tags":[1686,1687,1682],"class_list":["post-50449","mayo","type-mayo","status-publish","hentry","tag-anatomical-structure","tag-medical-procedure","tag-person-group-concept","content_type-tests-procedures"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Bone scan - Hancock Health<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bone scan - 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