The increase in the X-ray absorption due to gold nanoparticles was investigated by using aqueous solutions containing gold (Au)\r\nnanoparticles. A sample with 15 nmin size nanoparticles and 0.5mg/mL gold concentration and a distilled water sample were used.\r\nTransmitted X-ray beams through the samples were registered with a CdTe detector and with an ionization chamber. Results show\r\nan enhancement in the X-ray absorption in the range 20%ââ?¬â??6% for beams generated from20 kV to 120 kVtube voltages, respectively.\r\nResults show that the use of gold nanoparticles, even at low concentrations, should result in a significant contrast enhancement for\r\nlow-energy X-ray beams.
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