| X线照片均方根值粒状度的测试探讨 |
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| 引用本文： | 袁聿德,冯树理.X线照片均方根值粒状度的测试探讨[J].中华放射学杂志,1995,29(12):862-865. |
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| 作者姓名： | 袁聿德 冯树理 |
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| 作者单位： | 泰山医学院放射系 |
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| 摘 要： | 作者介绍了Ｘ线照片均方根值（ＲＭＳ）粒状度的测试原理及方法。对ＣａＷＯ４／Ｆｕｊｉ和ＢａＦＣｌ：Ｅｕ／Ｆｕｊｉ两种屏胶系统在不同条件下的ＲＭＳ值进行了测试。
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| 关 键 词： | X线摄影 X光胶片 均方根值粒状度 质量控制 |
Investigation of Testing of RMS Graininess of Radiography |
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| Yuan Yude, Feng Shuli, Li Yueqing,et al..Investigation of Testing of RMS Graininess of Radiography[J].Chinese Journal of Radiology,1995,29(12):862-865. |
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| Authors: | Yuan Yude Feng Shuli Li Yueqing |
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| Affiliation: | Yuan Yude, Feng Shuli, Li Yueqing, et al. |
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| Abstract: | In this paper the principle and method of testing of RMS(Root Mean Square )graininess of radiograph were described.Two kinds of filrnscreen systetms:CaWO/Fuji and BaFCl:Eu / Fuji,were tested.The results indicated the RMS value of BaFCl Eu /Fuji system was greater than that of CaWO/Fuji system under the same condition,In addition,the RMS values of both systems increased with increase of X-ray tube voltage. The authors discussed the causes of graininess on a radiograph.This study together with related reports indicated that an effective way of controlling film mottle was to refrain from usmg too high tube voItage and too big intensifying screen factor which translated into too small mAs value. |
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| Keywords: | X- ray film X-ray intensifying screens Quality control |
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