| technetium 99m |
a metastable isotope of technetium, atomic mass 99, having a half-life of 6.01 hours; it decays by isomeric transition emitting gamma rays (0.141 MeV), and is the most commonly used radionuclide in nuclear medicine.
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| technetium 99m pertechnetate |
the ionic form of technetium 99m, TcO 4 - , having a variety of uses as an imaging agent (see table) and in the preparation of other 99m Tc radiopharmaceuticals.
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| technetium 99m (methoxyisonitrile) MIBI |
A radioactive tracer consisting of technetium 99m linked to MIBI. It is used in nuclear medical imaging (e.g., in scintimammography) to identify cancerous breast masses. Other uses of technetium 99m MIBI i
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