子宮卵管造影における患者皮膚線量と画質の最適化

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Because HSG is an x-ray examination for the genital glands, it is very important to reduce x-ray exposure to the patient. However, reducing exposure decreases image quality and causes a lack of optimization in image quality and dose. In computed radiography, image density does not depend on the dose exposed, and appropriate images can be obtained by adjusting the image processing parameters. Therefore, computed radiography can reduce x-ray exposure and improve image quality. In this study, we performed HSG using low-dose radiography with computed radiography(CR)systems and evaluated a simple procedure for reducing exposure dose while maintaining image contrast by changing radiation quality and adding filters. We also examined ways to reduce dose by using both procedures. We found that low-dose radiography using the CR system could increase the S value to 1, 200 from visual evaluation and could reduce by patient skin dose by 58%. To maintain the image contrast by changing radiation quality, the radiographic condition that was the same as 80 kV without the filter was a 72kV tube voltage with 0.3mm copper and 1 mmaluminum filter, and it could reduce patient skin dose by 57%. In HSG examination, Patient skin dose could be reduced by 82% by low-dose x-ray radiography using a CR system and by adding a filter, and it could offer images that showed no loss of diagnostic quality. Therefore, it could be said that our procedure for HSG is useful for the optimization of image quality and dose.
社団法人日本放射線技術学会の論文
2001-12-20

子宮卵管造影における患者皮膚線量と画質の最適化

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