Radiolabelling of Lipiodol with generator-produced 188Re for hepatic tumor therapy

Appl Radiat Isot. 1996 Mar;47(3):267-71. doi: 10.1016/0969-8043(95)00300-2.


In this study we prepared and analyzed the biodistribution of 188Re-labelled Lipiodol ([188Re]-Lipiodol) in rats after intrahepatic arterial injection. EDTB was synthesized by condensation of 1,2-benzenediamine and ethylenediaminetetraacetic acid (EDTA). The labelling efficiency of [188Re] Lipiodol was determined to be greater than 97% by ITLC developed with n-hexane. Following incubation of the [188Re] Lipiodol with an equal volume of serum at 37 degrees C for 48 h, ITLC indicated good in vitro stability. Approximately 7.4 MBq [188Re] Lipiodol was injected in each rat via the hepatic artery and samples of liver, spleen, muscle, lung, kidney, bone, whole blood and testis were obtained. [188Re] Lipiodol tissue concentrations showed that after 1 h intrahepatic injection most of the radiotracer was retained in the liver, and was eliminated slowly with a biological half-life of 33.5 h. Radioactvity levels in the lung, kidney and blood were moderate at 1 h, and declined rapidly over time. In the spleen, muscle, testis and bone, radiation levels were insignificant. These initial results indicate that -188Re- Lipiodol may be a potential radiopharmaceutical agent for the treatment of liver tumors.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Drug Carriers
  • Drug Stability
  • Hepatic Artery
  • Humans
  • Injections, Intra-Arterial
  • Iodized Oil* / administration & dosage
  • Liver Neoplasms / radiotherapy
  • Liver Neoplasms, Experimental / metabolism
  • Liver Neoplasms, Experimental / radiotherapy*
  • Male
  • Radioisotopes / administration & dosage
  • Radioisotopes / pharmacokinetics
  • Radioisotopes / therapeutic use*
  • Rats
  • Rats, Sprague-Dawley
  • Rhenium / administration & dosage
  • Rhenium / pharmacokinetics
  • Rhenium / therapeutic use*
  • Tissue Distribution


  • Drug Carriers
  • Radioisotopes
  • Rhenium
  • Iodized Oil