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KMID : 1151820170110020079
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Journal of the Korean Society of Radiology
2017 Volume.11 No. 2 p.79 ~ p.85
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Analysis of the cause by Pre Exposure Tube Voltage and Actual Exposure Tube Voltage deviation in Mammography Examination
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Cho Ji-Hwan
Lee Hyo-Yeong
Im In-Chul
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Abstract
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The purpose of this study is to investigate the cause analysis according to the difference between the pre exposure tube voltage and actual exposure tube voltage in mammography in connection with breast pressure thickness, breast size and body mass index and to find the improvement. The study tracked 377 women age 40 and older among the mammography examiners conducted by the National Health Insurance Corporation. It was analyzed that breast pressure thickness, breast size and body mass index according to the difference between the pre exposure tube voltage and actual exposure tube voltage among the parameters of dose report been sent to the picture archiving communication system with reference to the image with cranio-caudal projection in mammography. As are result, it shows that the thicker the breast thickness, smaller the breast size and lower body mass index, the higher the difference of tube voltage. In conclusion, the minimum tube voltage of mammography machine should be reset in order to set the tube voltage according to breast pressure thickness and breast size that are suitable for our country in mammography, in addition, it was considered that radiologist should make an effort to reduce radiation exposure and make a good quality image with reducing the difference of mammography condition by making a correct exposure condition in case of examining the patients with thin breast pressure and small breast size.
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KEYWORD
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Mammography, Pre exposure tube voltage, Actual exposure tube voltage, Breast pressure thickness, Breast size, Body mass index
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