PETAL Insights · Early Screening Vascular Ultrasound: Two Channels Adjust occlusion · Toggle thrombus age
Occlusion
Clear Complete
Age
B-Mode Structure · Tissue echo
Color Doppler Blood flow · Direction · Velocity
B-Mode Reading
Smooth vessel walls, open lumen. No echo disruption detected.
Doppler Reading
Color fills the vessel evenly. Blood moves freely in both directions.
For educational purposes only · Not a substitute for clinical evaluation PETAL Insights · Shanghai Chest Hospital