Quantitative TVI Stress echo analysis
Vivid S70 / S60
–
User Manual
7-21
BC092760-1EN
01
Society of Echocardiography 16 segments model. However, the
velocity cutoff model does not cover the apical segments (due to
low velocities and segment orientation), (see note).
NOTE:
Velocity measurements in mid and basal segments of the
myocardium will contain contributions from the apical region of
the myocardium. E.g. if measured value in a mid segment is
below the cutoff value for this segment then this might relate to a
reduced function in the mid or apical region.
Tissue Doppler does not have perfect site-specificity because of
tethering by adjacent segments. Thus, although an ischemic
segment has little thickening (and therefore could be expected
to show low velocity), measured velocity may be influenced by
local tethering, reflecting contraction in surrounding segments.
Conversely, a normal segment may have its velocity reduced by
an adjacent segment with reduced velocity. This tethering effect
may decrease the sensitivity for single vessel disease, but
nonetheless the sensitivity and specificity of the cut-offs are
approximately 80% (see reference 1 on page 7-25).
Three different analysis tools based on TVI data are available:
•
, enables the display
of a tissue velocity trace for a selected region of a previously
scored segment through the entire heart cycle. In addition
Vpeak is color-coded on the 2D image. From the velocity
trace, the user can estimate the peak systolic velocity (see
reference 1 on page 7-25).
This tool is available in views from peak levels only and only
when a segment has been scored in one of these views.
•
, enables visualization of
the systolic contraction of the heart by color-coding the
myocardial displacement through the systole.
•
, enables further
quantitative analysis based on multiple tissue velocity
traces.
The quantitative analysis is described in Chapter
‘Quantitative Analysis’ on
.
Содержание Vivid S70
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Страница 63: ...Device labels Vivid S70 S60 User Manual 2 31 BC092760 1EN 01...
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Страница 140: ...Image Optimization 5 4 Vivid S70 S60 User Manual BC092760 1EN 01 Figure 5 2 2D Touch panel 4D probe Live page 1 and 2...
Страница 144: ...Image Optimization 5 8 Vivid S70 S60 User Manual BC092760 1EN 01 Figure 5 4 M Mode Touch panel page 1 and 2...
Страница 149: ...Color Mode Vivid S70 S60 User Manual 5 13 BC092760 1EN 01 Figure 5 6 Color 2D Touch panel page 1 and 2...
Страница 156: ...Image Optimization 5 20 Vivid S70 S60 User Manual BC092760 1EN 01 Figure 5 10 The PW Doppler Touch panels page 1and 2...
Страница 160: ...Image Optimization 5 24 Vivid S70 S60 User Manual BC092760 1EN 01 Figure 5 12 TVI Touch panel page 1 and 2...
Страница 163: ...Tissue Tracking Vivid S70 S60 User Manual 5 27 BC092760 1EN 01 Figure 5 14 The Tissue Tracking Touch panel page 1 and 2...
Страница 166: ...Image Optimization 5 30 Vivid S70 S60 User Manual BC092760 1EN 01 Figure 5 16 The Strain rate Touch panel page 1 and 2...
Страница 169: ...Strain Vivid S70 S60 User Manual 5 33 BC092760 1EN 01 Figure 5 18 The Strain Touch panel page 1 and 2...
Страница 172: ...Image Optimization 5 36 Vivid S70 S60 User Manual BC092760 1EN 01 Figure 5 20 The TSI Touch panel page 1 and 2...
Страница 215: ...4D Mode Vivid S70 S60 User Manual 6 15 BC092760 1EN 01 Figure 6 9 The 4D Color Flow mode Touch panel...
Страница 280: ...Measurements and Analysis 8 2 Vivid S70 S60 User Manual BC092760 1EN 01 Measurement accuracy on page 8 97...
Страница 297: ...Advanced cardiac measurements and analysis Vivid S70 S60 User Manual 8 19 BC092760 1EN 01 Figure 8 9 AFI workflow...
Страница 349: ...4D Auto MVQ Vivid S70 S60 User Manual 8 71 BC092760 1EN 01 Figure 8 37 Set Landmark stage...
Страница 382: ...Measurements and Analysis 8 104 Vivid S70 S60 User Manual BC092760 1EN 01...
Страница 457: ...Disk management Vivid S70 S60 User Manual 10 55 BC092760 1EN 01 8 Press OK See page 10 56 to perform a database backup...
Страница 479: ...Working with the report function Vivid S70 S60 User Manual 11 5 BC092760 1EN 01 Figure 11 1 The Report screen...
Страница 670: ...Probes 13 54 Vivid S70 S60 User Manual BC092760 1EN 01...
Страница 704: ...Maintenance 15 14 Vivid S70 S60 User Manual BC092760 1EN 01...
Страница 708: ...Index 4 Vivid S70 S60 User Manual BC092760 1EN 01...
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