相关实验视频
Updated: Jul 19, 2026
09:11
Use of MRI-ultrasound Fusion to Achieve Targeted Prostate Biopsy
Published on: April 9, 2019
21.5K
5类LI-RADS与4类和5类组合的性能:系统性审查和元分析
Sunyoung Lee1, Yeun-Yoon Kim2, Jaeseung Shin2
1Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
European radiology
|May 29, 2024
概括
对肝细胞癌 (HCC) 诊断的LI-RADS类别4和5的结合显著增加了敏感性,但降低了特异性. 这会影响诊断的准确性,并可能为临床管理准则提供信息.
科学领域:
- 放射学 放射学是一门学科.
- 肝病学 肝病学是一种肝病学.
- 在瘤学瘤学.
背景情况:
- 计算机断层扫描 (CT) /磁共振成像 (MRI) 肝脏成像报告和数据系统 (LI-RADS) 类别5 (LR-5) 具有高特异性,但对于诊断肝细胞癌 (HCC) 的敏感性适度.
- 目前的LI-RADS指南根据成像特征对肝病变进行分类,以预测HCC风险.
研究的目的:
- 为了比较单独使用LR-5的诊断性能与用于HCC诊断的LR-4和LR-5 (LR-4/5) 组合.
- 评估结合LI-RADS类别对灵敏度和特异性的影响.
主要方法:
- 进行了系统的元分析,搜索到MEDLINE和EMBASE数据库,直到2023年1月3日.
- 包括的研究报告了使用CT/MRILI-RADS版本的2014年,2017年或2018年的HCC的LR-5和LR-4/5的诊断性能.
- 采用双变的随机效应模型,将诊断性能指标组合起来,根据成像模式和对比度类型进行子组分析.
主要成果:
- 分析了69项研究,包括15108个观察结果 (9928个HCC).
- 与LR-5 (65.7%) 相比,组合LR-4/5的聚合灵敏度 (83.0%) 显著更高 (p < 0.001).
- 与LR-5 (91.7%) (p < 0.001) 相比,组合LR-4/5的聚合特异性显著较低 (75.0%),正和负概率比率较低.
结论:
- 结合LI-RADS类别4和5,可以提高HCC检测的灵敏度,但降低特异性.
- 这些发现提供了性能变化的定量估计,为管理指南和个性化患者护理的潜在调整提供了信息.
- 该研究强调了在修改LI-RADS标准时诊断准确性的权衡.
相关概念视频
01:23Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast, controlled...
01:12Relative Risk
Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
01:12Hazard Ratio
The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial evaluating a...
For example, in a clinical trial evaluating a...