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使用REACT的自由呼吸非对比增强流程独立的MR血管学:为儿科血管评估进行前性研究
Jakob Spogis1, Ilias Tsiflikas1, Christoph Katemann2
1Diagnostic and Interventional Radiology, University Hospital Tübingen, Tübingen, Germany.
概括
非对比增强放松增强血管造影没有对比 (REACT) 为儿科胸外血管评估提供了与对比增强MRA相匹配的图像质量. 这种自由呼吸技术可能会在儿科血管成像中消除对比剂的需要.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 儿科成像学 儿科成像学
背景情况:
- 磁共振血管造影 (MRA) 对于儿科血管评估至关重要.
- 增强对比度的MRA (CE-MRA) 由于加多基对比剂带来了局限性.
- 在儿童中需要安全,有效的无对比的MRA技术.
研究的目的:
- 评估非对比增强放松增强血管造影无对比 (REACT) 序列用于儿科胸外血管评估.
- 为了比较REACT与常规对比增强的多相MRA.
- 评估图像质量,采集时间和REACT的诊断准确性.
主要方法:
- 这是一项前性,单中心研究,涉及接受MRA的儿科患者.
- 获得了自由呼吸的REACT和多相CE-MRA在1.5T.
- 由两个独立的读取器对图像质量 (利克尔特尺度),容器直径,SNR和CNR的评估.
主要成果:
- REACT的获取时间与CE-MRA相当或更快,特别是在腹部 (REACT VANE).
- 两位读者都将REACT的图像质量评为良好的至优秀的,与CE-MRA可比 (p > 0.05).
- 在容器直径测量 (r = 0.93) 和高ICC之间,REACT和CE-MRA之间存在强烈的相关性.
- 与CE-MRA相比,REACT显示了较高的静脉SNR和动脉/静脉CNR (p < 0.05).与CE-MRA相比,REACT显示了较高的静脉SNR和动脉/静脉CNR (p < 0.05).
结论:
- REACT是一种可行的,自由呼吸,无对比的MRA技术,用于儿科胸外血管评估.
- 雷克提供与CE-MRA相比较的图像质量和诊断准确性.
- REACT有可能减少或消除儿童MRA中对比剂的需要.
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