Objective:To investigate the correlation of abdominal aorta CT value,renal artery CT value and renal cortex thickness with renal cortex CT value on contrast enhanced 64-slice CT images.Methods:96patients(50 men and 46...Objective:To investigate the correlation of abdominal aorta CT value,renal artery CT value and renal cortex thickness with renal cortex CT value on contrast enhanced 64-slice CT images.Methods:96patients(50 men and 46women;16~74years)with normal kidney function,which was confirmed by kidney function test were enrolled in this study,including bilateral kidneys of 92cases and unilateral kidney of 4cases(total of 188kidneys;92left,96right).After intravenous(IV)injection of contrast agent the kidneys of the selected patients were scanned by MDCT.The scans were performed in arterial,venous and 3min delayed phases.All statistical analyses were performed by using IBM SPSS 20.0.Graphs were generated using Graph Pad Prism 5software.Quantitative data were presented as mean±standard deviation,while qualitative data were presented as frequency(%).P<0.05was considered to be statistically significant.Results:The mean renal cortex thickness was(5.19±0.81)mm in all kidneys.In the arterial phase,a statistically significant positive correlation between renal cortex CT values and abdominal aortic CT values was showed(r=0.584;P<0.001).A statistically significant positive correlation between renal cortex CT values and renal cortex thickness was demonstrated(r=0.533,P<0.0001).Likewise,there was a positive correlation between renal cortex CT value and renal artery CT values(r=0.43,P<0.001).Conclusion:It is a promising approach to assess the individual kidney function by measuring abdominal aorta CT value,renal artery CT value,renal cortex CT value and renal cortex thickness using contrast MDCT.展开更多
目的:根据世界卫生组织(World Health Organization,WHO)的分析报告,全球不孕症患病率呈逐年上升趋势。分析造影剂逆流子宫肌层的相关风险因素,对降低造影剂逆流的发生率及治疗女性不孕症具有重要的意义。目前,临床上缺乏预评估输卵管...目的:根据世界卫生组织(World Health Organization,WHO)的分析报告,全球不孕症患病率呈逐年上升趋势。分析造影剂逆流子宫肌层的相关风险因素,对降低造影剂逆流的发生率及治疗女性不孕症具有重要的意义。目前,临床上缺乏预评估输卵管造影逆流子宫肌层的有效指标,判断标准主要依赖于医生经验和患者症状。本研究旨在运用四维超声子宫输卵管造影的影像学特征来评价造影剂逆流子宫肌层的危险因素,并构建诺模图(nomogram)风险预测模型,为临床不孕症的诊疗提供参考。方法:本研究回顾性分析2020年1月1日至2022年12月15日在湖南妇女儿童医院和中南大学湘雅三医院就诊的1274例行四维子宫输卵管超声造影(hysterosalpingo-contrast sonography,HyCoSy)手术检查的不孕症女性患者的影像学特征。将发生造影剂逆流子宫肌层的不孕症患者设为逆流组(n=234),未发生造影剂逆流子宫肌层的不孕症患者设为未逆流组(n=1040)。对研究的基线变量与造影剂逆流子宫肌层结局依次采用单因素Logistic分析和多因素Logistic分析,筛选出有统计学意义的变量构建nomogram预测模型。通过Bootstrap分析进行内部验证,重复抽样次数为500。结果:未逆流组与逆流组的年龄分别为(30.66±4.83)和(31.82±5.27)岁,差异有统计学意义(P=0.0011)。未逆流组的不孕症类型以原发性不孕为主(50.96%),逆流组则以继发性不孕为主(76.50%),且72.65%的患者存在妇科手术史,组间差异均有统计学意义(均P<0.001)。逆流组出现月经量异常和主观不适情况的患者比例高于未逆流组,而未逆流组则较逆流组使用造影剂更多,差异均有统计学意义(P=0.0016、P<0.001、P<0.001)。在影像学方面,未逆流组与逆流组在内膜厚度、输卵管管壁光滑程度和卵巢周围造影剂弥散程度等方面存在不同,表现为未逆流组内膜厚度更厚,输卵管管壁更光滑、更通畅。Nomogram预测模型的受试者操作特征曲线的曲线下面积(area under the curve,AUC)为0.854,提示预测性能较好。模型内部验证的决策曲线分析(decision curve analysis,DCA)的AUC为0.737,当患者发生造影剂逆流子宫肌层的阈值概率为0.05~0.95时,净收益最高达0.18;应用nomogram预测模型的净收益水平高于全干预和全不干预的附加效益,提示该模型具有较好的临床预测效能。结论:基于不孕症类型、内膜厚度、造影剂量和主观不适等影响因素构建的nomogram预测模型能够准确预测四维HyCoSy术后造影剂逆流子宫肌层的发生风险,有助于临床医生尽早采取预防措施,降低造影剂内渗发生率及其他并发症的发生率。展开更多
文摘Objective:To investigate the correlation of abdominal aorta CT value,renal artery CT value and renal cortex thickness with renal cortex CT value on contrast enhanced 64-slice CT images.Methods:96patients(50 men and 46women;16~74years)with normal kidney function,which was confirmed by kidney function test were enrolled in this study,including bilateral kidneys of 92cases and unilateral kidney of 4cases(total of 188kidneys;92left,96right).After intravenous(IV)injection of contrast agent the kidneys of the selected patients were scanned by MDCT.The scans were performed in arterial,venous and 3min delayed phases.All statistical analyses were performed by using IBM SPSS 20.0.Graphs were generated using Graph Pad Prism 5software.Quantitative data were presented as mean±standard deviation,while qualitative data were presented as frequency(%).P<0.05was considered to be statistically significant.Results:The mean renal cortex thickness was(5.19±0.81)mm in all kidneys.In the arterial phase,a statistically significant positive correlation between renal cortex CT values and abdominal aortic CT values was showed(r=0.584;P<0.001).A statistically significant positive correlation between renal cortex CT values and renal cortex thickness was demonstrated(r=0.533,P<0.0001).Likewise,there was a positive correlation between renal cortex CT value and renal artery CT values(r=0.43,P<0.001).Conclusion:It is a promising approach to assess the individual kidney function by measuring abdominal aorta CT value,renal artery CT value,renal cortex CT value and renal cortex thickness using contrast MDCT.
文摘目的:根据世界卫生组织(World Health Organization,WHO)的分析报告,全球不孕症患病率呈逐年上升趋势。分析造影剂逆流子宫肌层的相关风险因素,对降低造影剂逆流的发生率及治疗女性不孕症具有重要的意义。目前,临床上缺乏预评估输卵管造影逆流子宫肌层的有效指标,判断标准主要依赖于医生经验和患者症状。本研究旨在运用四维超声子宫输卵管造影的影像学特征来评价造影剂逆流子宫肌层的危险因素,并构建诺模图(nomogram)风险预测模型,为临床不孕症的诊疗提供参考。方法:本研究回顾性分析2020年1月1日至2022年12月15日在湖南妇女儿童医院和中南大学湘雅三医院就诊的1274例行四维子宫输卵管超声造影(hysterosalpingo-contrast sonography,HyCoSy)手术检查的不孕症女性患者的影像学特征。将发生造影剂逆流子宫肌层的不孕症患者设为逆流组(n=234),未发生造影剂逆流子宫肌层的不孕症患者设为未逆流组(n=1040)。对研究的基线变量与造影剂逆流子宫肌层结局依次采用单因素Logistic分析和多因素Logistic分析,筛选出有统计学意义的变量构建nomogram预测模型。通过Bootstrap分析进行内部验证,重复抽样次数为500。结果:未逆流组与逆流组的年龄分别为(30.66±4.83)和(31.82±5.27)岁,差异有统计学意义(P=0.0011)。未逆流组的不孕症类型以原发性不孕为主(50.96%),逆流组则以继发性不孕为主(76.50%),且72.65%的患者存在妇科手术史,组间差异均有统计学意义(均P<0.001)。逆流组出现月经量异常和主观不适情况的患者比例高于未逆流组,而未逆流组则较逆流组使用造影剂更多,差异均有统计学意义(P=0.0016、P<0.001、P<0.001)。在影像学方面,未逆流组与逆流组在内膜厚度、输卵管管壁光滑程度和卵巢周围造影剂弥散程度等方面存在不同,表现为未逆流组内膜厚度更厚,输卵管管壁更光滑、更通畅。Nomogram预测模型的受试者操作特征曲线的曲线下面积(area under the curve,AUC)为0.854,提示预测性能较好。模型内部验证的决策曲线分析(decision curve analysis,DCA)的AUC为0.737,当患者发生造影剂逆流子宫肌层的阈值概率为0.05~0.95时,净收益最高达0.18;应用nomogram预测模型的净收益水平高于全干预和全不干预的附加效益,提示该模型具有较好的临床预测效能。结论:基于不孕症类型、内膜厚度、造影剂量和主观不适等影响因素构建的nomogram预测模型能够准确预测四维HyCoSy术后造影剂逆流子宫肌层的发生风险,有助于临床医生尽早采取预防措施,降低造影剂内渗发生率及其他并发症的发生率。
