| 摘要 |
A personal X-ray dosimeter system, comprising a portable detector (100) and a reader device (114). The portable detector (100) comprises an array (104) of programmed non-volatile memory elements (102) and a scintillator element (106) for converting a portion of X-radiation incident thereon to UV radiation. As a result of exposure to X-radiation (112) not converted to UV radiation, some of the memory elements (102) will have the charge on their floating gates, thereby causing a corresponding shift in threshold voltage (VT). After some exposure time, the reader device (114) reads from the detector (100) data representative of the number of VT shifted memory elements (102), and determines therefrom using predetermined calibration curves, the radiation dose (122) to which the user has been exposed.
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