管道电流减少和代图像重建用于计算机断层扫描 骨髓图谱
Karolin J Paprottka1, Vivian Schultz2, Karina Kupfer2
1Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany. Karolin.Paprottka@tum.de.
使用管电流减小的低剂量 (LD) 计算机断层扫描 (CT) 骨髓图谱协议有效地减少了辐射暴露,而不会影响图像质量或干预规划和指导的诊断信心.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 辐射瘤学 辐射瘤学
背景情况:
- 计算机断层扫描 (CT) 骨髓描绘对于脊髓成像至关重要.
- 在保持诊断质量的同时优化辐射剂量是一个关键的挑战.
研究的目的:
- 评估低剂量 (LD) CT骨髓图谱协议对图像质量,干预计划信心和诊断产量的影响.
- 评估CT骨髓造影中管道电流减少的可行性.
主要方法:
- 对68名接受CT骨髓扫描 (34个标准剂量[SD],34个LD) 的患者进行了回顾性分析.
- 扫描与患者的人口统计和临床因素相匹配.
- 图像质量,文物,对比度和干预信心由两位读者使用利克特尺度进行评估.
- 图像噪声和辐射剂量指标 (CTDIvol,SSDE) 在SD和LD协议之间进行了比较.
主要成果:
- 图像质量,文物,对比度和干预规划/指导的信心在SD和LD协议中均被评为好至完美.
- 干预计划和指导的读者间一致性是好的到非常好的 (κ ≥ 0.77).
- 图像噪声在SD和LD扫描之间是相似的.
- 与SD协议相比,LD协议显著降低了辐射剂量 (CTDIvol,SSDE) (p <0.05).
结论:
- 一个LD CT骨髓图协议与管电流的减少是可行的,并减少辐射暴露.
- LD成像不会对图像质量,诊断信心或诊断确定性产生负面影响.
- 代图像重建进一步增强了LD协议的好处.
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