使用标准化磁共振成像 (MRI) 描述符,观察者间协议和诊断准确性的胎盘积分谱障碍
M Schreuders1, V Schiffer1, C Hum1
1Department of Gynaecology and Obstetrics, Maastricht University Medical Center, the Netherlands.
Clinical radiology
|November 14, 2025
概括
国际胎盘积分谱学会 (IS-PAS) 的磁共振成像 (MRI) 描述器用于诊断胎盘积分谱 (PAS) 障碍,其诊断价值有限,观察者间一致性不足. 胎盘增生/增生胎盘的产前诊断仍然具有挑战性.
科学领域:
- 放射学 放射学是一门学科.
- 产科 产科 产科 产科 产科
- 孕产妇和胎儿医学 孕产妇和胎儿医学
背景情况:
- 正确的胎儿前诊断的胎盘增生谱 (PAS) 对于母亲的结果至关重要.
- 对疑似PAS的磁共振成像 (MRI) 解释的变化需要标准化的诊断标准.
研究的目的:
- 评估9个标准化IS-PASMRI描述器的观察者间一致性和诊断价值,以确定胎盘积谱 (PAS) 障碍.
- 将MRI描述器的诊断性能与超声波 (美国) 发现进行比较.
主要方法:
- 追溯分析32个怀孕MRI扫描,怀疑PAS.
- 两个放射科医生对IS-PASMRI描述符的独立评估.
- 评估观察者之间的一致性 (卡帕系数) 和诊断性能 (敏感性,特异性).
- 与组织病理学或手术内发现的比较作为参考标准.
主要成果:
- 在"膀壁中断" (κ = 0.52) 和"焦点外生质量" (κ = 0.46) 方面,观察者之间的一致性最高.
- 对于"异质胎盘" (κ = 0.12) 和"暗色胎盘内带" (κ = -0.09) 观察到的最低一致性.
- 最高的灵敏度是"逆胎盘黑暗区域的损失" (100%) 和"肌体稀薄" (93%).
- "膀壁中断" (94%) 和"焦点外生质量" (100%) 的特异性最高.
- 对于PAS诊断,US和MRI之间的灵敏度和特异性没有显著差异.
结论:
- 该IS-PASMRI描述符显示了非最佳的观察者间一致性和PAS的有限诊断价值.
- 胎盘增生/增生胎盘的产前诊断仍然具有挑战性.
- 需要进一步的研究来验证当前的MRI描述符,并探索新的成像方式.
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