Despite the known interplay between blood flow and function, to our knowledge, there is currently no minimally invasive method to monitor diaphragm hemodynamics. We used contrast-enhanced ultrasound to quantify relative diaphragm blood flow (Q˙DIA) in humans and assessed the technique’s efficacy and reliability during graded inspiratory pressure threshold loading. We hypothesized that: (1) Q˙DIA would linearly increase with pressure generation, and (2) that there would be good test-retest reliability and interanalyzer reproducibility.

中文翻译：

---

使用造影剂增强超声量化人体膈肌血流


尽管血流和功能之间存在已知的相互作用，但据我们所知，目前没有微创方法来监测隔膜血流动力学。我们使用对比增强超声来量化人体的相对隔膜血流 （Q ̇DIA），并评估了该技术在分级吸气压力阈值负荷期间的有效性和可靠性。我们假设：（1） Q ̇DIA 会随着压力的产生而线性增加，并且 （2） 将具有良好的重测可靠性和分析仪间重现性。