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TECHNETIUM 99M COLLOID [1 record]

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Record 1 1991-05-23

English

Subject field(s)
  • Chemistry
  • Radiography (Medicine)
OBS

"technetium 99m": An isomer of technetium 99 that decays by isomeric transition, with a half-life of 6 hours.

French

Domaine(s)
  • Chimie
  • Radiographie (Médecine)
CONT

Le technétium 99 m est très utilisé en médecine nucléaire. Sa période courte (six heures) permet des doses plus fortes. Il se fixe sur de très nombreux tissus et est utilisé pour les scintigraphies thyroïdiennes (où il remplace l'iode 131), pour mettre en évidence les cavités cardiaques et les gros vaisseaux (sous forme de pertechnétate), pour pratiquer des scintigraphies de foie (colloïde de technétium), des scintigraphies de poumons (microsphères marquées au technétium), des scintigraphies de cerveau (pertechnétate), d'os (pyrophosphates de technétium), etc.

Spanish

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