Comparing Techniques for Measuring Pulmonary Artery Stiffness
Author Information
Author(s): Ibrahim El-Sayed H, Shaffer Jean M, White Richard D
Primary Institution: University of Florida
Hypothesis
This study aims to compare the transit-time and flow-area methods for measuring pulse-wave velocity in the pulmonary artery using 3.0-Tesla MRI.
Conclusion
Both the transit-time and flow-area methods showed good agreement in estimating pulse-wave velocity, but the flow-area method had larger variabilities.
Supporting Evidence
- The TT and QA methods showed good agreement with a correlation coefficient of r=0.93.
- The Bland-Altman analysis indicated that all measurement differences lay within the ±2SD limit.
- The TT method required double the imaging time compared to the QA method.
Takeaway
The study looked at two ways to measure how stiff the pulmonary artery is, and found that both methods work well, but one is a bit more variable than the other.
Methodology
Twenty-five volunteers were scanned using two different MRI techniques to measure pulse-wave velocity in the pulmonary artery.
Limitations
The flow-area method required longer processing times and showed larger variabilities compared to the transit-time method.
Participant Demographics
15 males and 10 females, average age 52 years.
Statistical Information
Statistical Significance
p>0.1
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website