indium in-111 pentetate

Indium In-111 pentetate is a radiopharmaceutical diagnostic agent composed of the radioactive isotope Indium In‑111 chelated with diethylenetriamine pentaacetic acid (DTPA). It is primarily used for radionuclide cisternography, a nuclear medicine imaging technique to evaluate cerebrospinal fluid (CSF) flow and detect abnormalities such as CSF leaks or blockages. After intrathecal administration, the compound travels with the CSF through the spinal canal and into cranial cisterns, allowing visualization via gamma camera due to photon emissions from Indium‑111 decay. The agent demonstrates efficient renal clearance and minimal background tissue accumulation, resulting in high-quality diagnostic images with low radiation exposure[1][2][3][5]. Its mechanism of action relies on its physical properties as a gamma-emitting tracer rather than pharmacological interaction with biological targets.

Brand names

Indium DTPA In 111IN-111 DTPAIN111 DTPAIN 111 DTPA

Other names

indium in 111 pentetateindium in 111 diethylenetriamine pentaacetatepentetate indium disodium in 111111in-dtpa