Measurements and Analysis
8-18 Vivid S70 / S60 – User Manual
BC092760-1EN
01
Automated Function Imaging
Automated Function Imaging (AFI) is a decision support tool for
global and regional assessment of the LV systolic function. AFI
calculates the myocardial tissue deformation based on feature
tracking on 2D grey scale loops.
AFI is performed on the standard apical views, apical long-axis
(APLAX), 4-chamber (A4CH) and 2-chamber (A2CH), following
an on screen guided workflow (see also Figure 8-9).
AFI is also available for standard mid-esophageal views
acquired with a TEE probe.
AFI may be launched from the Cardiac application using TTE
images from the probes M5Sc-D or 3Sc-RS, or from the
Pediatric application using either the M5Sc-D, 3Sc-RS or 6S-D
probe.
If a complete analysis of all three views is performed, the result
is presented as a Bull's eye display showing color coded and
numerical values for peak systolic full wall longitudinal strain,
PSS (Peak Systolic Strain), TTP (Time To Peak global
longitudinal strain) and traces.
If the user approves the results, all values are stored to the
worksheet. In addition, Global Strain for each view, Average
Global Strain for the whole LV, standard deviation of the
segmental Time To Peak Strain and the Aortic Valve Closure
time used in the analysis are stored to the worksheet.