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technetium-99m |
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technetium-99m,
the radionuclide most commonly used to image the body in nuclear medicine scans. It is preferred because of its short half-life and because the emitted photon has an appropriate energy for normal imaging techniques. The "m" indicates that this radionuclide is metastable. It is generated on site from a molybdenum source. technetium a chemical element, atomic number 43, atomic weight 99, symbol Tc. See Table 6. technetium-99m the most frequently used radioisotope in nuclear medicine, a gamma emitter having a half-life of 6.04 hours and a primary photon energy of 140 keV; symbol 99mTc. 99m Tc sulfur coated scintiscan see scintiscan. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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| Mentioned in | ? | References in periodicals archive | ? | Medical browser | ? | Full browser | ? | |||
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angiocardiography Cardiac Blood Pool Scan CAT scan Ceretec colloid CT scan electromagnetic radiation etidronate heart hepar infrared radiation lymphoscintigraphy pamidronate pyramidal radiation radiation radiation biology radiation physicist radiation sensitivity radiation therapist | recommend evaluation for bone metastases with Tc99m MDP bone scan or plain skeletal radiographs, and measuring the serum levels of parathyroid hormone (PTH) and PTH-related peptide, as well as the levels of 25-(OH) vitamin D and 1,25-(OH) vitamin D as this will point to the common causes for hypercalcaemia of malignancy and help to rule out non-malignant causes of hypercalcaemia. Another form of stress test involves administering a radioactive isotope (often Technetium Tc99m Sestamibi) and is called a nuclear stress test. Tc99m HMDP scintigraphy showed abnormal uptake only in the left soleus muscle. |
Tc99m |
TC1 TC154 TC17 TC2 TC2-21 TC21 TC2IP TC2S TC3 TC3-V1 TC3IPD TC3S TC4 TC4C TC4I TC4IDB TC4IRP TC5 TC6 TC7 TC8 TC8-PSK TC8PSK TC9 Tc99m TCATCA TCA TCA TCA cycle TCA cycle TCA cycle TCA cycle TCA cycle TCA Innovative Product/Technology Award TCA-E TCAA TCAAA TCAAB TCAAFSO TCAAMS TCAAN TCAAP TCAB TCABG Tcac Tcac Tcac Tcac TCAC RAWS TCAC(D) TCAC-D TCACC TCACCC TCACCIS | |||||||
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