Relationship between Count and Energy for Diagnostic Radiology
Keywords:
Optically Stimulated Luminescence, Diagnostic RadiologyAbstract
At present, radiation is used in many fields including medical diagnosis and treatment. Thus the radiation measurement is necessary for monitoring hazardous for occupational workers and patients due to radiation. OSL dosimeter InLight-LDR model 2 composes of four Al2O3: C elements with different filters is used for estimating the personal dose. It is used to evaluate the personal dose from the different radiation and energies in term of effective dose, equivalent dose at skin and equivalent dose at lens of eye along with analyzing radiation energy.
In this study, OSL dosimeters were exposed with x-ray for calibration in radiation protection level and diagnostic quality control level by using radiation beam in term N-Series and RQR, respectively. Tube voltages in both radiation beams qualities were similar for studying relationship between count and x-ray energies. From the result, the ratio of E2/E1 was approximate to 1.0 in all range of x-ray energies. However, the ratio of E3/E1 and E4/E1 increased numerously by x-ray energies. The result can be used to determine the diagnostic radiation energies by comparison with the graph between E3/E1 and E4/E1 with mean energy of each radiation quality. Moreover, the mean energy determined from this study can be used as reference for further studies for determination of mean energy of the dose in diagnostic radiology and the study in lens dose for interventional radiology worker.
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