We conducted a retrospective analysis of 221 subjects with 256 suspected gastrointestinal lesions from2007 to 2015 to explore the detecting efficiency of dualtime-point fluorine-18 fludeoxyglucose(^(18)F-FDG) positron...We conducted a retrospective analysis of 221 subjects with 256 suspected gastrointestinal lesions from2007 to 2015 to explore the detecting efficiency of dualtime-point fluorine-18 fludeoxyglucose(^(18)F-FDG) positron emission tomography/computed tomography(PET/CT)and pathology examination. The abdominal delayed PET/CT was performed within 45 min of the conventional scan.The change in maximum standardized uptake value(ASUV_(max)) and morphological features of the suspected lesions between the conventional and dual-time-point PET/CT were compared. The sensitivity, specificity, positive predictive value, and negative predictive value(NPV) of conventional PET/CT were 81.6%(84/103), 56.2%(86/153), 55.6%(84/151), and 81.9%(86/105), respectively.Those of dual-time-point PET/CT were 94.1%(97/103),78.4%(120/153), 74.6%(97/130), and 95.2%(120/126),respectively. There was a significant difference between the conventional and dual-time-point PET/CT(P < 0.005).The SUV_(early) and the %△SUV_(max) could not present more information in differential diagnoses, but the rate of tumors with increased SUVdelay accounted for 79.6%(82/103) and more than that of nonneoplastic lesions(15.5%, 29/187)(x^2= 115.5, P < 0.01). Therefore, the dual-time-point^(18)F-FDG PET/CT had a higher sensitivity and NPV than the conventional PET/CT to detect gastrointestinal tumors.The constant morphology and increased SUV_(delay) help to detect the tumors and adding delayed imaging on the locality will be an effective method when we accidentally find a suspected gastrointestinal tumor on the conventional PET/CT images.展开更多
目的系统评价剖宫产术中不同时机行血管介入阻断对凶险性前置胎盘患者及胎儿的影响。方法采用计算机检索PubMed、Embase、Medline、Web of Science、维普、万方数据库、中国知网、中国生物医学文献数据库等中不同时机行血管介入阻断对...目的系统评价剖宫产术中不同时机行血管介入阻断对凶险性前置胎盘患者及胎儿的影响。方法采用计算机检索PubMed、Embase、Medline、Web of Science、维普、万方数据库、中国知网、中国生物医学文献数据库等中不同时机行血管介入阻断对凶险性前置胎盘的相关研究。检索时限为建库至2024年3月1日,由两名研究员独立筛选随机对照或回顾性文献、提取数据,选用Review Manager 5.4.1软件分析,参照Cochrane协作网提供的偏倚风险评估工具对文献质量进行评估。结果共纳入12篇目标文献,1030例凶险性前置胎盘患者。Meta分析结果显示,胎儿娩出前阻断可降低术后子宫切除率(OR=0.54,95%CI:0.33~0.89)和术后入住ICU病房率(OR=0.34,95%CI:0.19~0.63),但不能降低序贯子宫动脉栓塞率(OR=0.61,95%CI:0.28~1.32)。此外,对胎儿1 min Apgar评分(MD=0.11,95%CI:-0.23~0.46)、5 min Apgar评分(MD=0.10,95%CI:-0.04~0.24)、1 min Apgar评分≤7分(OR=0.81,95%CI:0.36~1.85)、5 min Apgar评分≤7分(OR=0.93,95%CI:0.33~2.63)无明显影响。结论胎儿娩出前介入阻断的临床价值更高,且不会增加胎儿不良结局。展开更多
文摘We conducted a retrospective analysis of 221 subjects with 256 suspected gastrointestinal lesions from2007 to 2015 to explore the detecting efficiency of dualtime-point fluorine-18 fludeoxyglucose(^(18)F-FDG) positron emission tomography/computed tomography(PET/CT)and pathology examination. The abdominal delayed PET/CT was performed within 45 min of the conventional scan.The change in maximum standardized uptake value(ASUV_(max)) and morphological features of the suspected lesions between the conventional and dual-time-point PET/CT were compared. The sensitivity, specificity, positive predictive value, and negative predictive value(NPV) of conventional PET/CT were 81.6%(84/103), 56.2%(86/153), 55.6%(84/151), and 81.9%(86/105), respectively.Those of dual-time-point PET/CT were 94.1%(97/103),78.4%(120/153), 74.6%(97/130), and 95.2%(120/126),respectively. There was a significant difference between the conventional and dual-time-point PET/CT(P < 0.005).The SUV_(early) and the %△SUV_(max) could not present more information in differential diagnoses, but the rate of tumors with increased SUVdelay accounted for 79.6%(82/103) and more than that of nonneoplastic lesions(15.5%, 29/187)(x^2= 115.5, P < 0.01). Therefore, the dual-time-point^(18)F-FDG PET/CT had a higher sensitivity and NPV than the conventional PET/CT to detect gastrointestinal tumors.The constant morphology and increased SUV_(delay) help to detect the tumors and adding delayed imaging on the locality will be an effective method when we accidentally find a suspected gastrointestinal tumor on the conventional PET/CT images.
文摘目的系统评价剖宫产术中不同时机行血管介入阻断对凶险性前置胎盘患者及胎儿的影响。方法采用计算机检索PubMed、Embase、Medline、Web of Science、维普、万方数据库、中国知网、中国生物医学文献数据库等中不同时机行血管介入阻断对凶险性前置胎盘的相关研究。检索时限为建库至2024年3月1日,由两名研究员独立筛选随机对照或回顾性文献、提取数据,选用Review Manager 5.4.1软件分析,参照Cochrane协作网提供的偏倚风险评估工具对文献质量进行评估。结果共纳入12篇目标文献,1030例凶险性前置胎盘患者。Meta分析结果显示,胎儿娩出前阻断可降低术后子宫切除率(OR=0.54,95%CI:0.33~0.89)和术后入住ICU病房率(OR=0.34,95%CI:0.19~0.63),但不能降低序贯子宫动脉栓塞率(OR=0.61,95%CI:0.28~1.32)。此外,对胎儿1 min Apgar评分(MD=0.11,95%CI:-0.23~0.46)、5 min Apgar评分(MD=0.10,95%CI:-0.04~0.24)、1 min Apgar评分≤7分(OR=0.81,95%CI:0.36~1.85)、5 min Apgar评分≤7分(OR=0.93,95%CI:0.33~2.63)无明显影响。结论胎儿娩出前介入阻断的临床价值更高,且不会增加胎儿不良结局。
