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低管电压和深度学习重建,以减少薄切片腹部CT中的辐射和对比剂量:一个潜在的临床试验

Kenichiro Yoshida^1,2, Yasunori Nagayama³, Yoshinori Funama⁴

¹Department of Radiology, Yamaga Medical Center, 511 Yamaga, Kumamoto, 861-0501, Japan.

European radiology

|May 16, 2024

概括

低管电压 (80kVp) 与深度学习重建 (DLR) 结合,显著改善了薄切片腹部CT图像质量. 这种方法可以减少辐射和有的对比剂量,提高诊断效率和患者安全.

科学领域:

放射学放射学是一门学科.
医疗成像医学成像
计算机断层扫描 (CT) 是一种计算机断层扫描.

背景情况:

低剂量CT协议对于减少腹部成像中的辐射暴露至关重要.
深度学习重建 (DLR) 算法在降低辐射剂量下改善图像质量方面表现有前途.
优化含对比剂量 (ICM) 剂量对于患者安全和降低医疗保健成本至关重要.

研究的目的:

评估低管电压 (80kVp) 和DLR协议用于薄切片腹部CT的可行性和有效性.
为了比较图像质量,辐射剂量和ICM剂量在新方案和标准的120kVp协议之间.

主要方法:

一项前性研究,涉及148名接受对比增强腹部CT的患者.
患者被随机分配到120kVp协议 (600 mgL/kg ICM) 或80kVp协议 (360 mgL/kg ICM) 中.
使用混合代重建 (HIR) 或DLR重建图像,并对客观和主观图像质量进行评估.

主要成果:

与120kVp (p < 0.001) 相比,80kVp协议显著减少了大小特定剂量估计 (SSDE) 的40.4%,ICM剂量减少了36.3%.
使用DLR的80kVp协议实现了优异的对比度与噪声比 (CNR) 和主观图像质量得分 (p < 0.001).
在120kVp-HIR和80kVp-DLR之间没有观察到噪声纹理 (NPS) 或边缘度 (ERS) 的显著差异.

结论:

80kVp和DLR的组合在薄切片腹部CT中提供了卓越的客观和主观图像质量.
该协议有效地减少了辐射和ICM剂量,为标准的120kVp协议提供了更安全的替代方案.
与DLR技术的80kVp增强了腹部CT检查的诊断信心和患者安全.

关键词:

对比媒介对比媒介.深度学习是一种深度学习.图像增强图像增强图像增强的是什么意思?多检测器计算机断层扫描.

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