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CT imaging assessment of BiOI QDs. a) CT images of BiOI QDs and iopromide in vitro at various concentrations. b) Corresponding CT value of BiOI QDs and iopromide. c) In vivo CT images taken at different time after intratumoral injection of BiOI QDs. d) In vivo CT images of a tumor‐bearing mouse after intravenous injection of BiOI QDs at various time points.
