Abstract：With the continuous improvement of the diagnostic X-ray quality evaluation system, tube voltage has become the important index for evaluating the quality of X-ray radiation beams . The measurement method and traceability method of medical breast tube voltage are mainly studied. Two methods are used to measure the tube voltage, namely the voltage divider box voltage division method and the energy spectrum endpoint method.The measurement results are quantitatively transmitted to several semiconductor detectors commonly used in the market. The experimental results show that the maximum difference between the two methods of tube voltage measurement is within 1.0%,the results of measuring the tube voltage using the above two methods have been verified to be reliable. The voltage measurement results of four semiconductor detector tubes commonly used in the domestic market are calibrated, and the deviation of the relative inherent error is within 2.0%, which can be used for on-site quality control of medical breast machines.
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