Tc99m IDA (iminodiacetic acid) analogues

Tc99m IDA (iminodiacetic acid) analogues are hepatobiliary agents in nuclear medicine, used in cholescintigraphy.

These include:

  • Tc99m-DISIDA: diisopropyl IDA, aka Hepatolite
  • Tc99m-Mebrofenin: trimethyl bromo IDA, aka Choletec
  • Tc99m-PIPIDA: paraisopropyl iminodiacetic acid

The use of IDA alone (Tc99m-IDA) is an older technique and "H"epatic "IDA" scan resulted in the term "HIDA" scan. Tc99m-IDA is seldom used anymore, but the term "HIDA scan" remains.

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rID: 46821
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