开发使用胸部幻影的z轴倾斜技术,以减少计算机断层扫描冠心血管造影期间的辐射暴露
Rumiko Nosaka1, Tomokazu Shohji2, Nobutaka Yanano1
1Department of Radiology, The Jikei University Kashiwa Hospital, 163-1 Kashiwashita, Kashiwa-shi, Chiba 277-0004, Japan.
Radiation protection dosimetry
|May 26, 2023
概括
日本的一种新的消失肝位置 (VLP) 技术用于计算机断层扫描冠状动脉扫描,可显著减少辐射暴露. 这种方法使身体倾斜,以减少扫描范围和剂量指数,如CTDIvol和DLP.
科学领域:
- 医学成像和放射学医学成像和放射学
- 辐射保护 辐射保护
背景情况:
- 在全球范围内,日本的诊断X射线暴露频率最高.
- 日本的计算机断层扫描冠状动脉扫描显示高剂量指数 (CTDIvol,DLP) 相对于诊断参考水平,需要剂量减少策略.
研究的目的:
- 引入和评估一种称为消失肝脏位置 (VLP) 的新型辐射暴露减少技术.
- 评估VLP在减少CTDIvol和DLP在计算机断层扫描冠状动脉血管学过程中的有效性.
主要方法:
- 提出了消失的肝脏位置 (VLP) 技术,涉及向右倾斜身体沿着z轴.
- 利用三种不同的心电图协议来测量沿z轴的管电流变化.
- 由z轴倾斜造成的评估辐射暴露变化.
主要成果:
- 消失的肝脏位置 (VLP) 技术显示,体积计算断层扫描剂量指数 (CTDIvol) 降低了高达6.2%.
- 使用VLP技术,剂量长度产品 (DLP) 减少了高达8.9%.
- 通过减少扫描范围和最大限度地减少心脏和肝脏之间的重叠,VLP提供了优势.
结论:
- 消失的肝脏位置 (VLP) 技术在计算机断层扫描冠状动脉扫描期间有效减少辐射暴露.
- 这种方法为降低CTDIvol和DLP提供了可行的策略,有助于提高日本等高暴露地区的患者安全.
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