目的比较X线胸片、CT在肺癌与良性肿瘤鉴别中的应用效果。方法随机选取2016年6月~2018年6月我院收治的肺癌与良性肿瘤患者60例,依据放射诊断方法将这些患者分为两组,即X线胸片诊断组(X线组)和CT诊断组(CT组),每组30例,统计分析两组患...目的比较X线胸片、CT在肺癌与良性肿瘤鉴别中的应用效果。方法随机选取2016年6月~2018年6月我院收治的肺癌与良性肿瘤患者60例,依据放射诊断方法将这些患者分为两组,即X线胸片诊断组(X线组)和CT诊断组(CT组),每组30例,统计分析两组患者的影像学表现、鉴别诊断肺癌与肺部良性肿瘤的敏感度、特异度。结果 CT组患者中有毛刺或锯齿状、肺叶一侧或全肺不张比例43.3%(13/30)、16.7%(5/30)均显著高于X线组36.7%(11/30)、10.0%(3/30)(P<0.05),但两组患者中缺乏规则的边缘或分叶征、病灶呈孤立性结节状周围型比例20.0%(6/30)、16.7%(5/30) vs 23.3%(7/30)、20.0%(6/30)之间的差异均不显著(P>0.05)。CT组鉴别诊断肺癌与肺部良性肿瘤的敏感度、特异度92.1%、89.0%、93.6%、95.0%均显著高于X线组83.3%、80.5%、84.2%、82.3%(P<0.05)。结论 CT在肺癌与良性肿瘤鉴别中的应用效果较X线胸片好,影像学表现较为突出,敏感度、特异度均较高,值得在临床推广应用。展开更多
The application of CaO refractories was limited due to its poor hydration resistance.Introducing appropriate additive is an effective way to improve its hydration resistance.Additive WO3 was introduced in the preparat...The application of CaO refractories was limited due to its poor hydration resistance.Introducing appropriate additive is an effective way to improve its hydration resistance.Additive WO3 was introduced in the preparation of CaO aggregates using calcination method in this study.The introduction of WO3 decreased the apparent porosity of CaO aggregates and promoted the grain growth of CaO by the formation of liquid at high temperatures.The average grain size of the specimens with 0.4 mass%WO3 and treated at 1550℃was increased to 51.6μm comparing to 33.5μm that without WO3 additive.As a result,the hydration resistance of CaO aggregate was significantly improved.Besides,WO3 sublimate easily,therefore,less WO3 was remained after the heat treatment.The further increase of WO3 addition had little effect on the hydration resistance of CaO specimens.展开更多
文摘目的比较X线胸片、CT在肺癌与良性肿瘤鉴别中的应用效果。方法随机选取2016年6月~2018年6月我院收治的肺癌与良性肿瘤患者60例,依据放射诊断方法将这些患者分为两组,即X线胸片诊断组(X线组)和CT诊断组(CT组),每组30例,统计分析两组患者的影像学表现、鉴别诊断肺癌与肺部良性肿瘤的敏感度、特异度。结果 CT组患者中有毛刺或锯齿状、肺叶一侧或全肺不张比例43.3%(13/30)、16.7%(5/30)均显著高于X线组36.7%(11/30)、10.0%(3/30)(P<0.05),但两组患者中缺乏规则的边缘或分叶征、病灶呈孤立性结节状周围型比例20.0%(6/30)、16.7%(5/30) vs 23.3%(7/30)、20.0%(6/30)之间的差异均不显著(P>0.05)。CT组鉴别诊断肺癌与肺部良性肿瘤的敏感度、特异度92.1%、89.0%、93.6%、95.0%均显著高于X线组83.3%、80.5%、84.2%、82.3%(P<0.05)。结论 CT在肺癌与良性肿瘤鉴别中的应用效果较X线胸片好,影像学表现较为突出,敏感度、特异度均较高,值得在临床推广应用。
文摘The application of CaO refractories was limited due to its poor hydration resistance.Introducing appropriate additive is an effective way to improve its hydration resistance.Additive WO3 was introduced in the preparation of CaO aggregates using calcination method in this study.The introduction of WO3 decreased the apparent porosity of CaO aggregates and promoted the grain growth of CaO by the formation of liquid at high temperatures.The average grain size of the specimens with 0.4 mass%WO3 and treated at 1550℃was increased to 51.6μm comparing to 33.5μm that without WO3 additive.As a result,the hydration resistance of CaO aggregate was significantly improved.Besides,WO3 sublimate easily,therefore,less WO3 was remained after the heat treatment.The further increase of WO3 addition had little effect on the hydration resistance of CaO specimens.