高加速,基于狄克森的非对比MR血管造影与高调CT血管造影相比
Martin Georg Zeilinger1, Daniel Giese2,3, Michaela Schmidt3
1Institute of Radiology, University Hospital of Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany. martin.zeilinger@uk-erlangen.de.
La Radiologia medica
|November 28, 2023
概括
非对比磁共振血管造影 (MRA) 提供诊断图像质量,可与大动脉成像的计算机断层扫描血管造影 (CTA) 相提并论. 这种自由呼吸的MRA技术非常适合需要重复扫描的患者,避免使用对比剂和辐射.
科学领域:
- 心血管成像 - 心血管成像
- 放射学 放射学是一门学科.
- 医学物理 医学物理
背景情况:
- 计算机断层扫描血管学 (CTA) 广泛用于大动脉成像,但涉及电离辐射和对比剂.
- 无对比磁共振血管学 (MRA) 提供了一个潜在的替代方案,特别是对于需要重复检查的患者.
- 新型MRA技术旨在提高图像质量,减少全面心血管评估的扫描时间.
研究的目的:
- 为了比较一种新的,非对比的3D同位素MRA序列与ECG触发和呼吸补偿与ECG触发的高音CTA用于对大动脉进行成像.
- 为了评估图像质量,大动脉尺寸和两种模式之间的截面区域.
- 评估非对比MRA技术在常规临床使用中的适用性.
主要方法:
- 25名患者在最近的CTA后,在3TMRI上接受了非对比MRA.
- 大动脉直径和面积用半自动工具在11个层次上测量.
- 图像质量由两名放射科医生独立评估,使用5分利克尔特尺度,评估大动脉,大血管和周围结构.
主要成果:
- 无论是MRA还是CTA数据集都显示出诊断图像质量.
- 在MRA和CTA之间,整体图像质量和系统性动脉图像质量相似 (p > 0.05).
- 对于上腔和下腔静脉成像 (p < 0.05),MRA被青,而对于肺静脉 (p < 0.05),CTA更受青. 在大动脉测量中没有发现显著差异 (p > 0.05).
结论:
- 新的非对比MRA技术提供了对主动脉,其分支和大静脉的强大成像.
- 大动脉的图像质量和定量测量与对比度增强的CTA相美.
- 这种自由呼吸,无对比的MRA是需要重复成像的患者的合适选择,避免使用对比剂和电离辐射.
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