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KMID : 0364920100350010043
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Journal of Radiation Protection and Research
2010 Volume.35 No. 1 p.43 ~ p.48
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A Study on the Detection Ability of Minute Lesions in X-ray Using the Molybdenum Target
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Yang Da-Rae
Dong Kyung-Rae
Park Yong-Soon
Ji Youn-Sang
Kim Young-Keun
Kim Chang-Bok
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Abstract
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Beam quality is determined according to Xray tube’s target material. In a range of between 22 kVp and 28 kVp, molybdenum target generates the characteristics energy between the average 17.9 kVp and 19.5 kVp, which produces the high contrast image of the breast. In this study, we used the Mo/Mo combination breast device and ALVIM TRM phantom and measured the detection ability of the minute lesion in the breast imaging throughout analyzing ROC curves. Assuming that an average subject thickness of the breast is 40 mm, the detection ability was not dependent on the kVp changes in a while dependent on both the mAs and thickness change. We can assure that it is not needed to increase the kVp for the imaging of breast which thickness is within the mean range of 40 mm.
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KEYWORD
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Breast, Molybdenum target, ALVIM TRM model, ROC curve
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