Results
The Volume and EF tool in the UltraLinQ viewer is designed to provide accurate measurements of the following based on a procedure of Simpson's Biplanar Method for Estimation of Volume and EF:
- Left Ventricular End Diastolic Volume (LVEDV)
- Left Ventricular End Systolic Volume (LVESV)
- Stroke Volume (SV)
- Left Ventricle Ejection Fraction (LVEF)
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.
Instructions for Use
To complete this tool, the user must complete four, two-dimensional traces of:
- Apical Four Chamber End Systolic Volume (A4C-ESV)
- Apical Four Chamber End Diastolic Volume (A4C-EDV)
- Apical Two Chamber End Systolic Volume (A2C-ESV)
- Apical Two Chamber End Diastolic Volume (A2C-EDV)
For results, follow the instructions below:
- In the Toolbox icon, open the Clinical Tools menu and select Simpson's Biplanar Method
- The drawing tool is pre-selected when Simpson’s Method tool is opened from the Toolbox.
- If the image is not calibrated, use the Calibrate tool to ensure images are calibrated before completing each step of this tool. Each image will need to be calibrated before the tracing can be made.
- Pause the clip. Tracings can not be made on actively playing clips-- they must be paused before continuing.
- Begin at the mitral valve annulus on the right side of the image, tracing along the endocardial border to the apex, and then continue along the opposite side of the ventricle back to the mitral valve annulus. Important: The direction of tracing must be done the same direction for all EF measurements-- either all left to right (clockwise) or all right to left (counterclockwise).
- 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.
- When you move from the A2C frame to the A4C frame, or vice versa, re-open the EF tool menu. This will reactivate the tracing tool tip.
- After completing all required tracing for this tool, click the Results Table icon to view the results
The Results Table will open in the upper left corner of the viewer.