非瘦身患者的最佳腹部CT图像质量:CM注射协议的定制和低能量获取
Francesco Macri1, Elina Khasanova1, Bonnie T Niu2
1Department of Radiology, Geneva University Hospitals, University of Geneva, 1211 Geneva, Switzerland.
Diagnostics (Basel, Switzerland)
|July 14, 2023
概括
定制的对比介质注射协议在腹膜皮层CT扫描中显著降低了对比体积和注射率. 与标准固定协议相比,这种方法提高了单能CT (SECT) 和双能CT (DECT) 的图像质量.
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:
- 标准的腹腔皮层CT扫描通常使用固定对比介质 (CM) 卷.
- 优化CM管理对于平衡图像质量和患者剂量至关重要.
研究的目的:
- 为了比较使用定制的CM注射协议与标准固定协议的腹皮单能CT (SECT) 和双能CT (DECT) 的图像质量.
主要方法:
- 在91名患者 (SECT-100 kVp) 和83名患者 (DECT-65 keV) 的回顾性分析中,采用了定制注射方案.
- 与以前使用固定CM注射的腹腔皮层SECT-120 kVp扫描进行比较.
- 根据患者的体重,对比度度和注射速率公式来定制方案.
主要成果:
- 与SECT-120 kVp (p ≤ 0.001) 相比,定制注射显著降低了CM体积 (9-12 mL) 和注射速率 (0.2-0.4 mL/s).
- 对于SECT-100 kVp和DECT-65 keV,观察到更好的衰减,噪声,信号对噪声和对比对噪声的比率.
- 在98.8%的定制注射病例中,定性图像质量得分很高 (≥4).
结论:
- 定制的CM注射方案可大幅降低剂量.
- 这些协议在腹腔皮层SECT-100 kVp和DECT-65 keV检查中产生了优越的图像质量.
- 基于重量的定制协议是优化CT成像中CM管理的有效策略.
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