当前位置:首页>南京>南京医科大学第一附属医院放射科许晓泉教授团队成果|多参数MRI结合动态增强和弥散加权成像对甲状腺相关眼病活动性的诊断价值

南京医科大学第一附属医院放射科许晓泉教授团队成果|多参数MRI结合动态增强和弥散加权成像对甲状腺相关眼病活动性的诊断价值

  • 2026-02-14 02:39:13
南京医科大学第一附属医院放射科许晓泉教授团队成果|多参数MRI结合动态增强和弥散加权成像对甲状腺相关眼病活动性的诊断价值
今天分享一篇来自南京医科大学第一附属医院放射科许晓泉教授团队、2026年1月发表于《Eur Radiol》(中科院2区、IF=4.7分)的研究。甲状腺相关眼病(TAO)是一种常见的自身免疫性眼眶疾病,其病程分为活动期和非活动期,治疗策略截然不同。准确判断疾病活动性对临床决策至关重要。目前,脂肪抑制T2加权成像(FS-T2WI)是评估TAO活动性的常用影像学手段,但其性能仍有提升空间。本研究旨在探讨动态对比增强磁共振成像(DCE-MRI)和扩散加权成像(DWI)是否能为FS-T2WI提供附加价值,从而提高TAO活动性的判断准确性。研究前瞻性纳入72例TAO患者,通过多参数MRI获取影像学数据,并采用统计学方法分析各参数在活动与非活动组间的差异及其诊断效能。结果显示,DCE-MRI和DWI衍生的参数(如平均Ve、平均ADC)与FS-T2WI的信号强度比(SIR)结合后,能显著提升TAO活动性的诊断性能。本研究为TAO的精准分期提供了新的多参数MRI评估思路,具有重要的临床转化潜力。
论文题目:Added value of multiparametric MRI combining dynamic contrast-enhanced and diffusion-weighted imaging for determining thyroid-associated ophthalmopathy activity

一、背景与引入

❓问题:1️⃣甲状腺相关眼病(TAO)的活动性评估对治疗选择至关重要,活动期需免疫抑制治疗,非活动期则常需手术。2️⃣临床活动评分(CAS)依赖主观症状,一致性和准确性有限。3️⃣FS-T2WI是常用影像手段,但其信号强度比(SIR)为半定量指标,不能完全反映眼外肌的病理微观变化。4️⃣尽管DWI和DCE-MRI在评估TAO活动性中显示出潜力,但以往研究多单独评估这些序列,尚未明确它们是否能对FS-T2WI提供增量价值。

✅解决:1️⃣引入多参数MRI,联合FS-T2WI、DWI和DCE-MRI,从组织水肿、水分子扩散及微循环灌注等多个角度全面评估眼外肌的病理状态。2️⃣通过定量参数(如ADC、Ve、Ktrans等)弥补FS-T2WI半定量指标的不足,提高客观性和准确性。

思路:1️⃣前瞻性纳入TAO患者,采集FS-T2WI、DWI和DCE-MRI图像。2️⃣提取眼外肌的SIR、ADC及DCE-MRI参数(Ktrans、Kep、Ve),并进行直方图分析(最小值、平均值、最大值)。3️⃣通过组间比较、相关性分析、多因素回归及ROC曲线,筛选独立预测因子,并构建多参数联合模型,评估其相较于单一序列的诊断提升效果。

二、思路实现

研究设计:前瞻性诊断研究,经伦理委员会批准,患者签署知情同意书。

患者纳入:纳入89例临床诊断为TAO的患者,最终72例(144眼)符合标准,分为活动组(48例,96眼)和非活动组(24例,48眼)。

图像采集:1️⃣使用3T MRI扫描仪,采集冠状位DCE-MRI(VIBE序列)、DWI(分段读出平面回波序列)和FS-T2WI(涡轮自旋回波序列)。2️⃣DCE-MRI采用双室修正Tofts模型计算Ktrans、Kep、Ve。

图像分析:1️⃣由两名放射科医师手动勾画眼外肌ROI,计算SIR、ADC及各DCE参数的最大、平均、最小值。2️⃣使用组内相关系数(ICC)评估观察者间一致性。

统计分析:1️⃣采用独立样本t检验或Mann-Whitney U检验比较组间差异。2️⃣通过Spearman相关分析参数与CAS的相关性。3️⃣使用加权多因素逻辑回归筛选独立预测因子,并通过ROC曲线和DeLong检验比较诊断效能。

三、结果解读

临床特征:活动组年龄较大,游离甲状腺激素水平较低,CAS显著高于非活动组(4 vs 1)。

定量参数比较:活动组的SIR(最小、平均、最大)、ADC(最小、平均、最大)及Ve(平均、最大)均显著高于非活动组。

相关性分析:SIR、ADC、Ve的平均值与CAS呈正相关,提示这些参数可反映疾病活动程度。

独立预测因子:多因素回归显示,平均SIR、平均ADC和平均Ve是TAO活动性的独立预测因子。

诊断效能:1️⃣平均SIR、平均ADC、平均Ve三者联合的AUC为0.839,显著高于单独使用平均SIR(AUC=0.769)。2️⃣联合模型灵敏度达91.7%,特异性为64.6%,表明多参数MRI能有效提升TAO活动性的判断准确性。


图1:患者入组流程图。

图2:影像分析示意图。展示眼外肌ROI勾画及参数提取过程。

图3:活动与非活动TAO患者的代表性影像图例。

图4:区分活动与非活动TAO患者的受试者工作特征曲线。


许晓泉,职称:副主任医师,副教授,硕士生导师

现任放射科行政副主任,副主任医师,副教授,硕士生导师。从事医学影像诊断工作十余年,熟练掌握各系统常见病、多发病的影像诊断,擅长神经头颈系统病变影像诊断。现任中华医学会放射学分会头颈学组青年委员,中国卒中学会青年理事会理事,江苏省卒中学会医学影像专委会委员兼秘书,江苏省医学会放射学分会头颈学组委员,江苏省医师协会放射医师分会头颈学组副组长。2014年-2015年在韩国Asan Medical Center神经头颈影像专业组专科培训半年。主持国家级、省厅级科研课题9项,发表SCI和核心期刊论文50余篇。多次获得江苏省卫健委医学新技术引奖和江苏省医学会医学科技奖。(简介来自南京医科大学第一附属医院官网)

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  1. CONNECT:[ UseTime:0.000543s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000977s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.007892s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.007177s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000489s ]
  6. SELECT * FROM `set` [ RunTime:0.000177s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000707s ]
  8. SELECT * FROM `article` WHERE `id` = 479847 LIMIT 1 [ RunTime:0.007047s ]
  9. UPDATE `article` SET `lasttime` = 1771230842 WHERE `id` = 479847 [ RunTime:0.000707s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000243s ]
  11. SELECT * FROM `article` WHERE `id` < 479847 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.003562s ]
  12. SELECT * FROM `article` WHERE `id` > 479847 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.016579s ]
  13. SELECT * FROM `article` WHERE `id` < 479847 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005475s ]
  14. SELECT * FROM `article` WHERE `id` < 479847 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000689s ]
  15. SELECT * FROM `article` WHERE `id` < 479847 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005332s ]
0.125651s