基酸给药时间对T2加权和扩散加权腹部MRI检查的影响:一项前性研究
Su-Lan Jia1, Hui Xu2, Da-Wei Yang2
1Department of Radiology, Daxing Teaching Hospital, Capital Medical University, Beijing, 102600, China.
Current medical imaging
|November 4, 2024
概括
优化磁共振成像 (MRI) 扫描时间,通过在后续进行加多对比剂,可减少腹部扫描时间. 这种方法保持了肝脏,脏和胰腺的图像质量,但需要对评估进行前对比成像.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 诊断成像 诊断成像 诊断成像
背景情况:
- 磁共振成像 (MRI) 采集序列可以优化,以减少扫描时间.
- 基于加多的对比剂经常用于MRI以提高图像质量和诊断信息.
研究的目的:
- 为了评估加多酸施用时间对扫描持续时间和图像质量的影响.
- 为了比较扩散权重成像 (DWI) 和T2权重成像 (T2WI),在腹部MRI中进行质量前和后加多利尼姆对比.
主要方法:
- 展望性研究比较传统的 (前后对比) 和优化的 (仅对比后) MRI 协议.
- 信号与噪声比率 (SNR),对比与噪声比率 (CNR) 和明显扩散系数 (ADC) 的定量分析.
- 使用卡帕统计数据评估肝病变检测能力和观察者之间的协议.
主要成果:
- 优化组扫描持续时间比传统组 (p<0.05) 短得多 (1,015秒对1,304秒).
- 在对比后DWI/T2WI (p>0.05) 中,肝脏,脏和胰腺的SNR和ADC没有显著变化.
- 在对比后观察到SNR和ADC的显著下降 (p<0.05);肝损伤的检测能力保持不变.
结论:
- 对DWI和T2WI序列的加多利后给药缩短了腹部MRI扫描时间,而不会影响肝脏,脏和胰腺的图像质量.
- 使用DWI和T2WI进行评估应在加多注射之前进行,以保持图像质量.
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