半剂量加多比克伦醇和标准剂量加多酸二甲胺对抗增强腹部MRI的个体内比较
Antonella Del Gaudio1,2, Domenico De Santis2, Ludovica Lofino1
1Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA.
Journal of magnetic resonance imaging : JMRI
|January 20, 2026
概括
半剂量的gadopiclenol在腹部MRI中提供了与标准剂量的gadobenate相比较的图像质量和病变检测. 它在晚期动脉阶段提供了胰腺,脏和门静脉的增强可视化.
科学领域:
- 放射学和医学成像学 医学成像学
- 增强对比度的MRI技术
- 医疗成像中的药理作用剂
背景情况:
- 加多皮克伦醇是一种新型,高放松度的对比剂,旨在减少MRI中潜在的剂量.
- 目前在人体MRI中对加多皮克伦醇和常规药物 (如加多酸) 的比较是有限的.
- 优化对比剂协议对于保持诊断准确性,同时最大限度地减少剂量至关重要.
研究的目的:
- 在腹部MRI中进行半剂量gadopiclenol与标准剂量gadobenate的个体内比较.
- 为了评估两种对比剂之间的图像质量和病变明显性的差异.
- 在腹部成像中评估降低gadopiclenol剂量的疗效.
主要方法:
- 一项回顾性研究涉及100名患者,他们在12个月内接受了加多贝纳酸 (0.1毫摩尔/千克) 和加多皮克伦醇 (0.05毫摩尔/千克).
- 动态T1加权的3D脂肪抑制梯度回声序被利用在1.5T/3T跨多个动脉和平衡阶段.
- 定量分析包括SNR,CNR和对比度增强 (ΔE),以及对图像质量和损伤明显性的主观读者评估.
主要成果:
- 在晚期动脉阶段 (LAP) 中,加多皮克伦醇对胰腺,门静脉和脏的CNR和SNR显著更高.
- 对于大多数器官,在门静脉 (PVP) 和平衡阶段 (EP) 中,在药物之间没有观察到CNR或SNR的显著差异.
- 在所有评估阶段,gadopiclenol和gadobenate之间的损伤明显性和增强 (LBR, ΔE) 是可比的,在读者感知中没有显著差异.
结论:
- 半剂量的gadopiclenol可以达到主观图像质量和病变明显性,与腹部MRI中的标准剂量gadobenate相美.
- 加多皮克伦醇为LAP中的胰腺,脏和门静脉提供了卓越的增强作用.
- 这些发现支持在腹部MRI中使用降低剂量的gadopiclenol的潜力,而不会影响诊断性能.
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