Doppler Flow ROI

The Doppler Flow Region of Interest (ROI) is the portion of the image that includes the Doppler Flow waveform.

The algorithm for the Doppler Flow analysis, automatically locate the zero line, which is displayed in yellow, and the waveform, which is displayed in cyan.

The Doppler Flow ROI can be moved or resized. Each time you change the position and/or size of the ROI, the algorithm is re-initialized and the zero line is re-localized.

For more information on ultrasound setting for Doppler analysis, please see How to set up the ultrasound system in Duplex Mode (FMD Studio)

Draw a new Doppler Flow ROI:

• Click on the  Set Doppler Flow ROI button in the Doppler Panel (the button remains active).
• Click inside the video window and drag until the Doppler Flow ROI is complete (the size of ROI is shown in the Doppler Panel).
• When you release the mouse, the algorithm for the Doppler Flow analysis is initialized.

Modify the Doppler Flow ROI:

• Click on one of the corners of the Doppler Flow ROI.
• Drag to change the size of the the Doppler Flow ROI  (the size of ROI is shown in the Doppler Panel).

NOTE: as an alternative, you can modify the size of the Doppler Flow ROI by typing the value in the Doppler Panel.

Move the Doppler Flow ROI:

Click and hold inside the Diameter ROI.

Drag the Doppler Flow ROI to the location of interest.

NOTE: as an alternative, you can modify the position of the Doppler Flow ROI by typing the value in the Doppler Panel.

Re-initialize the algorithm for the Doppler Flow analysis:

Click into the Doppler Flow ROI.