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KMID : 0357520200430030122
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Journal of Radiological Science and Technology
2020 Volume.43 No. 3 p.122 ~ p.159
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Effects of Breast Dose on Plain Abdominal Position
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Joo Young-Cheol
Kim Sheung-Hyuk
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Abstract
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The purpose of this study is to investigate the effect of posture changes(Anteroposterior projection, Posteroanterior projection) in the plain abdominal examination on breast dose and to examine its clinical usefulness. This study was used a human body phantom and a glass dosimeter. Glass dosimeters were directly inserted from the center and outside of medial and lateral. In this study, the deep dose was measured in the right breast and the surface dose in the left breast. During the abdominal examination, the central X-ray incident point was perpendicularly incident to the image receptor 5 cm above the iliac crest. The exposure parameters were 82 ㎸p, 320 ㎃, 50 ㎳, x-ray field size 14×17 inch The distance between the center X-ray and the detector was fixed at 110 cm, and only the top two AEC chambers were used. As a result of this study, the medial and lateral side doses of the right breast were 535.73±30.68 μ㏉ and 414.46±33.52 μ㏉ for erect AP, and 145.80±18.52 μ㏉ and 148.76±12.92 μ㏉ in erect PA. The superficial breast dose was 754.00±68.36 μ㏉ on the medial side and 674.06±45.58 μ㏉ on the lateral side in the erect AP, 70.66±7.98 μ㏉ on the medial side, and 86.46±15.35 μ㏉ on the lateral side in the erect PA. There was a statistically significant difference in the difference between the mean values of the medial and lateral side doses in the deep and superficial areas of the breast according to the postural change (p <0.01). As a result of this study, If the abdominal radiography was examined in the PA position, the dose reduction effect was 72.78% on the medial side, 64.10% on the lateral side of the deep breast, 90.62% on the medial side, and 87.17% on the lateral side of the superficial breast compared to the AP position.
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KEYWORD
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Brest dose, Plain abdomen radiography, Anteroposterior projection, Posteroanterior Projection, Human body phantom, Patient posture
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