B-Flow Imaging

B-Flow Imaging

B-mode imaging with flow without the overlay of color Doppler

Both RBCs & tissues are shown

Angle independent & not based on frequency shifts

Creating a B-Flow Image

Digitally coded sound waves transmitted into body

Returning signals are decoded

Subtractive process is used to separate RBCs from tissue

Weak returning signals from RBCs are enhanced

Tissue signals are equalized

All signals are displayed

B-Flow Imaging Uses

Degree of stenosis

Low flow conditions

Flow in vessels that are perpendicular to sound beam

Characterizing hypoechoic ulcerated plaques

B-Flow Imaging Advantages

Does not alias

Increased cavity of vessel lumen & stenotic areas

High frame rate

Better temporal & spatial resolution