中国基层医药
中國基層醫藥
중국기층의약
CHINESE JOURNAL OF PRIMARY MEDICINE AND PHARMACY
2009年
8期
1379-1380
,共2页
电路X线摄影术%放射学信息系统
電路X線攝影術%放射學信息繫統
전로X선섭영술%방사학신식계통
Cineradiology%Rodiology information systems
目的 评价数字化放射成像系统(DR)各种参数对图像质量的影响.方法 抽取正常成人胸部正位DR片1000份,分析曝光参数及各个部位的参数对图象质量的影响.结果 90 kV组曝光时间为(13.05±4.92)ms大于125 kV组[(7.72±2.65)ms]和150 kV组[(5.65±1.81)ms](t=2.245,P＜0.05;t=2.812,P＜0.01);90 kV组面积剂量乘积(DAP)[(1.43±0.54)cGy·cm2]高于125 kv[(1.05±0.36)cGy·cm2]和150 kV[(0.86±0.29)cGy·cm2](t=2.311,P＜0.05);90 kV组转换因子(CF)14.8±4.52低于125 kV组(19.5±5.48)和150 kV组(22.9±6.44)(t=2.298、2.301,P＜0.05);曝光量与患者的身体体重指数(BMI)明显相关(r=0.678,P＜0.05);肋骨窗位平均值2018高于左心后肺纹理、肺门结构、气管隆突和胸椎(1584、1850、1554和1476)(t=2.114、2.241、2.295、2.304,均P＜0.05);肋骨窗宽平均值2677、气管隆突和胸椎窗宽分别为2383和2128,肋骨显示清晰1000份明显高于胸椎754份(t=2.214,P＜0.05).结论 DR采用合适的参数能获得较为满意的图像.
目的 評價數字化放射成像繫統(DR)各種參數對圖像質量的影響.方法 抽取正常成人胸部正位DR片1000份,分析曝光參數及各箇部位的參數對圖象質量的影響.結果 90 kV組曝光時間為(13.05±4.92)ms大于125 kV組[(7.72±2.65)ms]和150 kV組[(5.65±1.81)ms](t=2.245,P＜0.05;t=2.812,P＜0.01);90 kV組麵積劑量乘積(DAP)[(1.43±0.54)cGy·cm2]高于125 kv[(1.05±0.36)cGy·cm2]和150 kV[(0.86±0.29)cGy·cm2](t=2.311,P＜0.05);90 kV組轉換因子(CF)14.8±4.52低于125 kV組(19.5±5.48)和150 kV組(22.9±6.44)(t=2.298、2.301,P＜0.05);曝光量與患者的身體體重指數(BMI)明顯相關(r=0.678,P＜0.05);肋骨窗位平均值2018高于左心後肺紋理、肺門結構、氣管隆突和胸椎(1584、1850、1554和1476)(t=2.114、2.241、2.295、2.304,均P＜0.05);肋骨窗寬平均值2677、氣管隆突和胸椎窗寬分彆為2383和2128,肋骨顯示清晰1000份明顯高于胸椎754份(t=2.214,P＜0.05).結論 DR採用閤適的參數能穫得較為滿意的圖像.
목적 평개수자화방사성상계통(DR)각충삼수대도상질량적영향.방법 추취정상성인흉부정위DR편1000빈,분석폭광삼수급각개부위적삼수대도상질량적영향.결과 90 kV조폭광시간위(13.05±4.92)ms대우125 kV조[(7.72±2.65)ms]화150 kV조[(5.65±1.81)ms](t=2.245,P＜0.05;t=2.812,P＜0.01);90 kV조면적제량승적(DAP)[(1.43±0.54)cGy·cm2]고우125 kv[(1.05±0.36)cGy·cm2]화150 kV[(0.86±0.29)cGy·cm2](t=2.311,P＜0.05);90 kV조전환인자(CF)14.8±4.52저우125 kV조(19.5±5.48)화150 kV조(22.9±6.44)(t=2.298、2.301,P＜0.05);폭광량여환자적신체체중지수(BMI)명현상관(r=0.678,P＜0.05);륵골창위평균치2018고우좌심후폐문리、폐문결구、기관륭돌화흉추(1584、1850、1554화1476)(t=2.114、2.241、2.295、2.304,균P＜0.05);륵골창관평균치2677、기관륭돌화흉추창관분별위2383화2128,륵골현시청석1000빈명현고우흉추754빈(t=2.214,P＜0.05).결론 DR채용합괄적삼수능획득교위만의적도상.
Objective To evaluate the influence of various parameters in images by digital radiography (DR).Methods Analysis of exposure parameters and the parameters of various parts of the image in 1000 cases of chest images by DR.Results The 90kV group of exposure time[(13.05 ±4.92)ms]were greater than 125kV group [(7.72 ±2.65)ms]and 150kV group[(5.65 ±1.81)ms](t =2.245.P ＜0.05;t =2.812,P＜0.01);90kV group [(0.86±0.29)cGy ? cm2](t =2.311 ,P ＜0.05);90kV group of Conversion factor(CF)14.8 ±4.52 lower than the l25kV group(19.5±5.48)and 150kV group(22.9 ±6.44)(t =2.298,t =2.301 ,P ＜0.05);The exposure of patients significantly related to Body Mass Index(BMI(r = 0.678 ,P ＜0.05);The average window of rib in 2018 were higher than left ventricular after lung markings,hilar structures、thoracic tracheal and protuberans(1584,1850,1554 and 1476)(t = 2.114,t= 2.241,t= 2.295,t= 2.304,both P＜0.05);The average Wide Window of rib in 2677 were higher than the trachea and thoracic protuberans(2383 and 2128);The 1000 of rib clearly were significantly higher than 754 cases of thoracic(t = 2.214,P ＜ 0.05).Conclusion The appropriate parameters can be more satisfied with the images.
