一个简化的液体敏感的手部MRI协议来检测无对比剂的炎症:从普通人群中对无症状的受试者进行的一项大型研究,作为正常性的参考
Anna M P Boeren1,2, Dennis A Ton3, Elise van Mulligen4,3
1Department of Rheumatology, Erasmus Medical Centre, Rotterdam, The Netherlands. a.boeren@erasmusmc.nl.
Skeletal radiology
|December 9, 2024
概括
经修改的迪克森 (mDixon) MRI 技术很少在一般人群中显示炎症特征.
科学领域:
- 放射学 放射学是一门学科.
- 类风湿病学 类风湿病学
- 医疗成像医学成像
背景情况:
- 手部MRI对于风险分层的关节痛患者对于类风湿性关节炎 (RA) 的风险分层至关重要.
- 与对比度增强的MRI是RA的标准,但有缺点,并且可以在一般人群中显示类似炎症的特征,特别是在老年人中.
- 修改Dixon (mDixon) 技术提供了一个可靠的,患者友好的替代方案,没有对比度增强.
研究的目的:
- 为了调查mDixonMRI技术是否揭示一般人群手中的炎症状特征.
- 为了支持MDixonMRI用于手部评估的准确临床应用.
- 为了确定无症状个体使用mDixonMRI的突炎,突炎和骨髓胀 (BME) 的患病率.
主要方法:
- 在不同年龄组的220名无症状的志愿者接受了mDixon两只手的MRI.
- 两个独立的读者使用RAMRIS标准对膜炎,膜炎和关节和手腕的BME进行了MRI评分.
- 如果两个读者都得分,则被认为特征存在;频率>5%被认为与特异性相关,并按年龄类别 (<40,40-60,≥60岁) 分析.
主要成果:
- 更高的年龄与增加的BME得分相关 (p<0.005),但不与突炎或紧突炎相关.
- 在60岁以上的个体的一些骨中观察到1级BME (例如,在月亮动物中14%).
- 在不到5%的参与者中发生了突炎和紧突炎,在60岁以上的患者中,远距离放射关节1级突炎的小例外 (11%).
结论:
- 在使用mDixonMRI评估时,一般人群的手中炎症特征并不常见,这有助于图像解释.
- mDixon技术在检测RA相关炎症方面具有很高的特异性.
- 在评估60岁以上的个体时,临床医生应考虑特定的位置,以防止过度解释研究结果.
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