虚拟无增强图像来自双能计算机断层扫描,用于评估骨矿物质密度和检测骨质疏松症
Xiaoyu Tong1, Xin Fang1, Shigeng Wang1
1Department of Radiology, First Affiliated Hospital of Dalian Medical University, Dalian, China.
Quantitative imaging in medicine and surgery
|October 23, 2023
概括
双能CT扫描的虚拟未增强 (VUE) 图像准确地评估骨矿物质密度 (BMD) 并检测骨质疏松症,即使脊椎减弱值低于真实未增强 (TUE) 图像.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 骨健康 骨健康 骨健康
背景情况:
- 检测骨质疏松症对于预防骨折至关重要,特别是在接受CT扫描的患者中.
- 在CT扫描中的对比介质可以影响脊椎体的Hounsfield单位 (HU) 测量,影响骨矿物质密度 (BMD) 的准确性.
- 双能CT (DECT) 的真无增强图像 (TUE) 和虚无增强图像 (VUE) 可能提供不同的脊椎体CT衰减测量.
研究的目的:
- 为了比较三相增强DECT扫描TUE和VUE图像之间的脊椎体CT衰减测量.
- 用VUE图像与定量CT (QCT) 相比,评估BMD和检测骨质疏松症的可行性.
主要方法:
- 235名患者接受了腹部CT,未增强和三相增强DECT扫描.
- 在TUE和VUE图像上测量了L1-L2脊椎的BMD和HU值.
- 分析了TUE和VUE之间的差异和关联;通过ROC曲线评估诊断性能.
主要成果:
- BMD和HU测量显示在TUE和VUE图像上都有良好的观察者间可重复性.
- VUE图像显示CT衰减值明显低于TUE图像.
- 来自TUE和VUE图像的HU测量与QCT衍生的BMD有很强的相关性,显示了骨质疏松症和骨质疏松症的良好诊断性能.
结论:
- 尽管衰减值较低,但VUE图像有效评估BMD并检测骨质疏松症和骨质疏松症.
- VUE成像显示了骨质疏松症评估的良好诊断性能.
- 从DECT获得的VUE图像是BMD评估和骨质疏松症检测的可行工具.
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