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KMID : 0357520150380030221
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Journal of Radiological Science and Technology
2015 Volume.38 No. 3 p.221 ~ p.228
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Evaluation of Radiation Dose and Imaging of the QC Program Mammoplasty Patient During Mammography
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Lee Seon-Hwa
Kim Jung-Min
Kweon Dae-Cheol
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Abstract
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Purpose: In digital mammography QC program was used for the purpose of reducing low-dose and high-definition images of the radiation dose.
Materials and Methods: In digital mammography using a QC phantom according to the average glandular dose in the exposure method MLO view 0°, 30°, 45°, 50°, 55°, 70°, was measured at 90° intervals, an image with Hologic QC program to the SNR and CNR was measured to evaluate.
Results: The average dose in the MLO view was wired to 90° when the maximum was 1.75 mGy, it decreased approximately 6% was measured at 45° 1.65 mGy. In addition, 1.67 mGy, manual record, there were an average wired in accordance with the exposure dose and the dose of 1.52 mGy difference in the way auto filter. Image quality evaluation at every angular section SNR 50 ~ 52, shows a slight difference in CNR 11 ~ 12, it was included in the manufacturer's recommended value.
Conclusion: The dose was lowest in MLO view 45°, the difference between SNR and CNR were insignificant. The method of exposure will need a way to reduce the exposure of the patient’s body or unnecessary patient by placing a difference in settings in which the characteristics.
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KEYWORD
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Digital mammography, Oblique view, Mean glandular dose, Phantom
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