多频磁共振弹性成像检测小腹部淋巴结转移通过高度的转移
Christian Neelsen1, Thomas Elgeti, Tom Meyer
1From the Department of Radiology, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany (C.N., T.E., T.M., B.H., I.S., S.R.M.G.); Division of Radiology, German Cancer Research Center, Heidelberg, Germany (C.N.); Department of Nuclear Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany (T.E., C.F.); Institute for Biometry and Clinical Epidemiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany (U.G., L.M.); and Department of Radiology, Campus Virchow Klinikum, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany (D.G., B.H.).
多频磁共振弹性图 (MRE) 显著改善了转移性淋巴结的检测,即使是小的淋巴结也被标准标准遗漏. 这种基于硬度的成像为当前瘤评估方法提供了宝贵的补充.
科学领域:
- 医疗成像医学成像
- 在瘤学瘤学.
- 诊断技术 诊断技术
背景情况:
- 固体瘤响应评估标准 (RECIST) 1.1 是用于瘤评估的标准.
- 由于RECIST 1.1依赖短轴直径 (SAD),因此限制了小转移性淋巴结的检测.
- 对结节状况的定量分析对于精确的癌症分期至关重要.
研究的目的:
- 评估多频磁共振弹性图 (MRE) 在检测淋巴结转移中的实用性.
- 为了评估MRE的价值作为RECIST 1.1标准的辅助.
- 为了确定MRE是否可以改善小转移性淋巴结的检测,SAD测量错过了.
主要方法:
- 使用多频MRE在1.5T时对25个良性和82个转移性淋巴结进行前性检查.
- 在30,40,50,和60Hz下进行托莫elastography后处理,以测量剪波速度 (刚度).
- 与RECIST 1.1 (SAD) 进行MRE诊断性能比较,使用正子发射断层扫描-计算机断层扫描作为参考标准.
主要成果:
- 转移性淋巴结的硬度明显高 (1.90 m/s) 比良性淋巴结 (0.98 m/s) 高.
- 与单独使用SAD (0.56,0.41,0.66) 相比,MRE表现出更好的灵敏度 (0.84),负预测值 (0.66) 和准确性 (0.88).
- 结合MRE和SAD进一步提高了诊断性能 (灵敏度为0.88,NPV为0.71,准确度为0.91).
结论:
- 多频MRE可提高25%的转移性腹部淋巴结检测,特别是在SAD≤10毫米的节点.
- 通过MRE测量组织刚度是RECIST 1.1.的快速有效补充.
- MRE提供了一个有前途的新工具,可以提高淋巴结转移评估的准确性.
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