[A new system for noninvasive esophageal varices pressure measurement based on airflow and laser technology].

OBJECTIVE

Combined the optical principle with automatic control technology and computer real-time image detection technology to develop a non-contact system for noninvasive esophageal varices pressure measurement.

METHODS

The system included the adjustable air pump, laser device, image collection and analysis program. The feasibility and accuracy of the system were verified by in vitro experiments.

RESULTS

The bionic vascular pressure measured by this system had good correlation and repeatability with the actual pressure.

CONCLUSIONS

This system is accurate, feasible and has good application prospects.