急性水合变化对心血管磁共振原生T1和T2映射的影响
Katrine Aagaard Myhr1, Emel Keceli2, Joakim Bo Kunkel2
1Department of Cardiology, The Heart Centre, Copenhagen University Hospital - Rigshospitalet, Inge Lehmanns Vej 7, Copenhagen, 2100, Denmark. katrine.aagaard.myhr.01@regionh.dk.
The international journal of cardiovascular imaging
|December 26, 2024
概括
通过盐溶液输液实现的急性预加载增大,增加心肌原生T1和T2值. 然而,这些水化诱导的变化仍然在正常的测试-重新测试可变性范围内,确保可靠的心血管磁共振 (CMR) 解释.
科学领域:
- 心血管成像 - 心血管成像
- 生物物理学的生物物理.
背景情况:
- 心肌原生T1和T2值对水分状态敏感,可能会影响临床解释.
- 了解这些变化对于准确的心血管磁共振 (CMR) 评估至关重要.
研究的目的:
- 评估急性预负载增强对心肌原生T1和T2值的影响.
- 为了将这些变化的大小与测试-重新测试可重复性进行比较.
主要方法:
- 心血管磁共振 (CMR) 原生T1和T2映射在健康参与者中进行.
- 急性预加载增强是由2升静脉注射的同位素化引起的.
- 测试-重复测试可重复性通过两个连续的CMR检查来评估.
主要成果:
- 在预负载增强后,原生T1增加了17 ms,T2增加了1.7 ms (p < 0.001).
- 血液T1显示了更显著的46毫秒的增加 (p < 0.001).
- 观察到的变化在测试-重新测试可变性达成一致的95%范围内.
结论:
- 急性预负载增大显著改变心肌原生T1和T2值.
- 这些与水合相关的变化与CMR测量的固有变异性相当.
- 这些发现支持CMR T1和T2映射在临床实践中的稳定性,尽管水分的波动.
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