一个"阶段式"的诊断准确性方法报告前列腺查MRI: "更少是更多吗?"
Natasha Thorley1,2, Tom Parry1, Giorgio Brembilla1,3,4
1Centre for Medical Imaging, University College London, London, UK.
European radiology
|February 19, 2026
概括
一种新的两步"分阶段"方法显著改善了双参数MRI (bpMRI) 对前列腺癌 (PCa) 查的积极预测值 (PPV). 这种方法可以减少不必要的活检,提高PCa查中益与害的比率.
科学领域:
- 放射学 放射学是一门学科.
- 在瘤学瘤学.
- 医疗成像医学成像
背景情况:
- 使用双参数核磁共振 (bpMRI) 进行前列腺癌 (PCa) 查面临着低正预测值 (PPV) 的挑战,特别是在低患病率的人群中.
- 像利克特和PI-RADS这样的传统评估系统可能无法优化查设置,可能导致不必要的活检.
研究的目的:
- 评估两步"分阶段"报告方法是否可以提高bpMRI在PCa查中的PPV,而不是标准的利克特/PI-RADS评分.
- 评估"分阶段"方法对推活检数量和癌症检测率的影响.
主要方法:
- 从前性IP1-PROSTAGRAM PCa查研究 (NCT03702439) 中对bpMRI扫描进行了回顾性分析.
- "分阶段"的方法涉及对有限的MRI序列进行初步审查,如果结果呈阳性,则进行全面审查,以确定"决策至活检".
- "分阶段"方法的PPV与原始报告中的PI-RADS和Likert分数 (≥4) 进行了比较,显著的PCa定义为等级组 (GG) ≥2.
主要成果:
- "分阶段"报告方法的PPV为53% (8/15),明显高于利克特 (29%; 8/28) 和PI-RADS (≥4) (30%; 11/37) 路径.
- 这种新的方法有效地减半了推活检的数量,同时保持了可比的显著PCa (GG≥2) 癌症检测率.
- 该研究包括405名参与者,PCa患病率为4% (17/405).
结论:
- "阶段式"报告方法,使用有限的序列进行初始评估,在改善bpMRI的PPV进行PCa查方面显示出希望.
- 这种方法可以通过减少不必要的活检来提高益处与危害的比率,尽管需要在现实世界查中进行前性验证.
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