超低剂量CT与深度学习重建用于动脉瘤直径测量的可行性在EVAR后的随访中:与传统CT进行前性比较研究
Keigo Matsushiro1, Takuya Okada1,2, Koji Sasaki1
1Department of Diagnostic and Interventional Radiology, Kobe University Hospital, Kobe, Japan.
概括
超低剂量计算机断层扫描 (ULD-CT) 与深度学习重建 (DLR) 提供了准确的测量,用于后内血管动脉瘤修复 (EVAR) 监测. 与标准剂量CT (SD-CT) 相比,这种技术显著减少了辐射暴露.
科学领域:
- 放射学 放射学是指放射学
- 医疗成像医学成像
- 心血管成像 - 心血管成像
背景情况:
- 末血管动脉瘤修复后 (EVAR) 监测对于监测治疗成功至关重要.
- 标准剂量计算机断层扫描 (SD-CT) 是常用的,但涉及显著的辐射暴露.
- 超低剂量CT (ULD-CT) 与深度学习重建 (DLR) 提供了减少辐射剂量的潜在替代方案.
研究的目的:
- 评估ULD-CT与DLR的诊断准确度和图像质量,用于EVAR后监测.
- 在辐射剂量和测量精度方面,将ULD-CT与DLR与传统SD-CT进行比较.
主要方法:
- 这是一项前性研究,涉及44名接受EVAR后监测的患者.
- 将ULD-CT与DLR与SD-CT (代重建) 的比较.
- 由三个失明的放射科医生对动脉瘤囊径和图像质量的独立评估.
主要成果:
- 与SD-CT相比,ULD-CT显著降低了辐射剂量 (CT剂量指数体积和剂量长度乘积) (p<0.001).
- 动脉瘤囊直径测量显示ULD-CT和SD-CT之间的高度一致,平均差异为-0.37毫米.
- 图像质量评分对于ULD-CT (3.3) 比SD-CT (4.5) 低,但测量仍然准确.
结论:
- 带有DLR的ULD-CT为EVAR后监测提供了足够准确的测量.
- 与SD-CT相比,这种技术可以大幅减少辐射.
- 由于其基于软件的性质,ULD-CT与DLR具有在临床实践中广泛采用的潜力.
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