Gallium Ga 68 R11228

**Semantic type:** Indicator, Reagent, or Diagnostic Aid|Pharmacologic Substance

**Definition:** A radioconjugate composed of R11228, which targets an as of yet unelucidated target on tumor cells, that is conjugated to the radionuclide gallium (Ga) 68, with potential use in diagnostic imaging using positron emission tomography (PET). Upon administration of gallium Ga 68 R11228, the R11228 moiety targets and binds to tumor cells expressing the target. This allows the assessment of binding of R11228 to tumor cells and the possible therapeutic response to R11228 conjugated to a radionuclide delivering cytotoxic radiation, such as lutetium Lu 177 (Lu177).

**Synonyms:** - 68Ga-R11228 - Gallium Ga 68-R11228 - Gallium Ga 68-labeled R11228