All-inorganic perovskite nanocrystals: next-generation scintillation materials for high-resolution X-ray imaging.

For clinical uses, exploring novel materials or methods for further decreasing the imposed dose rate with satisfactory imaging resolution is highly significant for the reduction of radiation injury. 37 In this work, an ultra-low detection limit of 13 nGy s −1 has been achieved, with a radiation dose more than 400 times lower than that used in common X-ray diagnostics ( Fig. 6g ). 108 Besides, with good photostability, the proposed nano-scintillator exhibits a relatively rapid response in 44.6 ns, indicating its potential in high-speed CT scanning ( Fig. 6h and i ).

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