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KMID : 1151820200140030289
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Journal of the Korean Society of Radiology
2020 Volume.14 No. 3 p.289 ~ p.294
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A Study on Measurement of Output Dose in X-ray Unit
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Kim Jong-Eon
Lee Sang-Hun
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Abstract
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In order to control the quality of X-ray images and patient exposure, it is necessary to document the output dose(air absorption dose(mGy)) output from the X-ray unit from the measurement. The purpose of this study is to find an equation that can calculate the output dose from the measurement of the output dose and output factor(Of) of the X-ray Unit. The output dose and output factors of the X-beam irradiated from the X-ray unit were measured using an XR multi-detector. The output dose calculation formula was obtained by fitting the measured output dose divided by the tube current-exposure time product(mAs) and the set tube voltage with Allometric1. The final output dose calculation formula was obtained by multiplying this formula with the output factor. It is considered that the obtained final output dose calculation formula will be useful for all tube voltages, tube currents, exposure times, field sizes, and distances.
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KEYWORD
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Tube voltage, Field size, Output dose, Output factor
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