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</div><div><span>MIBG scintiscan</span></div></div>
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</a><h1 class="with-also" itemprop="name">MIBG scintiscan</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>An MIBG scintiscan is a type of imaging test. It uses a radioactive substance (called a tracer). A scanner finds or confirms the presence of <a test="test" href="./000340.htm">pheochromocytoma</a> and <a test="test" href="./001408.htm">neuroblastoma</a>. These are types of tumors that affect nerve tissue.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>A radioisotope (MIBG, iodine-131-meta-iodobenzylguanidine, or iodine-123-meta-iodobenzylguanidine) is injected into a vein. This compound attaches to specific tumor cells.</p><p>You will have the scan later that day or the next day. For this part of the test, you lie on a table under the arm of the scanner. Your abdomen is scanned. You may need to return for repeated scans for 1 to 3 days. Each scan takes 1 to 2 hours.</p><p>Before or during the test, you may be given an iodine mixture. This prevents your thyroid gland from absorbing too much of the radioisotope.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How to Prepare for the Test</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>You will need to sign an informed consent form. You will be asked to wear a hospital gown or loose-fitting clothes. You will need to remove jewelry or metal objects before each scan. Many drugs interfere with the test. Ask your health care provider which of your regular medicines you may need to stop taking before the test. </p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test will Feel</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>You will feel a sharp needle prick when the material is injected. The table may be cold or hard. You must lie still during the scan.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Why the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>This test is done to help diagnose pheochromocytoma. It is done when an <a test="test" href="./003789.htm">abdominal CT scan</a> or an <a test="test" href="./003796.htm">abdominal MRI scan</a> does not give a definite answer. It is also used to help diagnose neuroblastoma and can be used for carcinoid tumors.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Normal Results</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>There are no signs of a tumor.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>What Abnormal Results Mean</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Abnormal results may indicate:</p><ul><li><a test="test" href="./000340.htm">Pheochromocytoma</a></li><li><a test="test" href="./000399.htm">Multiple endocrine neoplasia (MEN) II</a></li><li>Carcinoid tumor</li><li>Neuroblastoma</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Risks</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>There is some exposure to radiation from the radioisotope. The radiation from this radioisotope is higher than from many others. You may need to take extra precautions for a few days after the test. Your provider will tell you what actions to take.</p><p>Before or during the test, you may be given an iodine solution. This will keep your thyroid gland from absorbing too much iodine. Usually people take potassium iodide for 1 day prior and 6 days after. This blocks the thyroid from taking up the MIBG.</p><p>This test should not be done on pregnant women. The radiation can pose danger to the unborn baby.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Adrenal medullary imaging; Meta-iodobenzylguanidine scintiscan; Pheochromocytoma - MIBG; Neuroblastoma - MIBG; Carcinoid MIBG</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div name="Images" class="section-body" id="section-tnails"><ul class="img-grid group">
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/9646t.jpg" alt="MIBG injection" title="MIBG injection" class="side-img"/><a href="../imagepages/9646.htm">MIBG injection</a></li>
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</ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Bleeker G, Tytgat GAM, Adam JA, et al. 123I-MIBG scintigraphy and 18F-FDG-PET imaging for diagnosing neuroblastoma. <em>Cochrane Database Syst Rev</em>. 2015;(9):CDC009263. PMID: 26417712 <a href="https://pubmed.ncbi.nlm.nih.gov/26417712/" target="_blank">pubmed.ncbi.nlm.nih.gov/26417712/</a>.</p><p>Cohen DL, Fishbein L. Secondary hypertension: pheochromocytoma and paraganglioma. In: Bakris GL, Sorrentino MJ, eds. <em>Hypertension: A Companion to Braunwald's Heart Disease</em>. 3rd ed. Philadelphia, PA: Elsevier; 2018:chap 15.</p><p>Oberg K. Neuroendocrine tumors and related disorders. In Melmed S, Auchus RJ, Goldfine AB, Koenig RJ, et al, eds. <em>Williams Textbook of Endocrinology</em>. 14th ed. Philadelphia, PA: Elsevier; 2020:chap 45.</p><p>Yeh MW, Livhits MJ, Duh Q-Y. The adrenal glands. In: Townsend CM Jr, Beauchamp RD, Evers BM, Mattox KL, eds. <em>Sabiston Textbook of Surgery</em>. 21st ed. Philadelphia, PA: Elsevier; 2022:chap 40.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 7/5/2022</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Jason Levy, MD, FSIR, Northside Radiology Associates, Atlanta, GA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.</p>
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