Results
The Velocity Time Integral (VTI) tool in the UltraLinQ viewer is designed to provide accurate measurements of the following:
- Velocity Time Integral (VTI) of the traced area
- Maximum Pressure Gradient (PGmax)
- Mean Pressure Gradient (PGmean)
- Max Velocity (Vmax)
- Mean Velocity (Vmean)
Access
The VTI is available in the DICOM viewer, which is accessible if exams are uploaded through the DICOM compatible UpLinq 2.9.1 or later versions.
Important: The VTI tool will only be available to users if the exam selected has a calibrated Doppler region included in the exam. If not, the VTI tool will show an error message.
Instructions for Use
To complete this tool, the user must complete a tracing of the full Doppler curve of interest. The tool will not extrapolate tracings to the X-axis of the Doppler graph. It will use the area drawn underneath curve only.
To complete the VTI, the following steps must be completed:
- In the Toolbox icon, open the Clinical Tools menu and select Velocity Time Integral (VTI)
- Enter the name of the VTI measurement you wish to make, and click Enter
- The VTI tracing tool is preselected and should be used to trace the doppler curve of interest after a name is entered and set
- To overwrite a tracing, retrace the image and click ‘Overwrite’ on the corresponding image on the Menu
- In lieu of retracing the entire shape, the user may also click and drag specific segments of the tracing. Click 'Overwrite' to save the new tracing.
- Click the Results Table icon to view the results of the VTI Tool
The Results Table will appear in the upper-left corner of the viewer.
7. Additional VTI measurements can be made for other valves. Click New, enter the name of the next VTI measurement you wish to make, click Enter, and repeat the steps listed above.