The Centers for Medical Countermeasures against Radiation (CMCR) https://grants.nih.gov/grants/guide/rfa-files/RFA-AI-14-055.html
are now accepting applications for pilot projects focused on practical approaches for radiation biodosimetry or the development of agents for the mitigation of acute or late radiation effects.
Pilot project funding is intended to foster novel / early ideas within and outside awarded CMCRs, to develop or incorporate new technologies as they become available, and to encourage collaborations among members of different centers and between the CMCRC and investigators within and outside the US (although research collaborations with existing centers are not required). The use of Pilot Projects permits maximum flexibility to advance in exciting research directions that seem most scientifically fruitful and allow for a greater element of risk than is permitted in standard NIH funding opportunities. Pilot projects must be within the scope of the original CMCRC RFA (linked above).
PIs of pilots funded through this program in 2015 or later are not eligible to apply, but may be included as co-investigators.