6-18 Cardiology
Tools Descriptions Formulae
EDV Index(Simp SP)
End-diastolic Left
Ventricular Volume
Index
EDV Index=EDV/BSA
ESV Index(Simp SP)
End-systolic Left
Ventricular Volume
Index
ESV Index=ESV/BSA
SV Stroke Volume
See table in “6.4.3.1 Left Ventricular Function“
CO Cardiac Output
EF Ejection Fraction
SI SV Index
CI CO Index
Operating Procedures
1. Select [Simp SP] in the measurement menu.
2. Measure the endocardium.
Measure the left ventricular endocardium at end-diastolic, and set the long axis, the EDV
is obtained;
Measure the left ventricular endocardium at end-systolic, and set the long axis, the ESV is
obtained;
The system calculates SV and EF;
If height and weight have been input already, SI, EDV Index and ESV Index are calculated.
3. Using touch screen knob to select HR source: ECG or input.
The CO and CI are calculated automatically.
Measurement Methods
The endocardium can be measured using trace, spline or auto, rotate the knob under [EDV] or
[ESV] on the touch screen to select the method.
z Trace
Trace the endocardium along the edge of the target area using the method similar to the
“Trace” method in 2D Area measurements; and then set the long axis.
z Spline
Set reference points (up to 12) along the edge of the endocardium using the method similar to
the “Spline” method in 2D Area measurements; and then set the long axis.
z Auto
(1) Set point A and B using the trackball and <Set> key, where in,
h A: Left ventricular interventricular septal and mitral valve junction;
h B: Left ventricular wall and mitral valve junction;
(2) After setting A and B, the cursor positions automatically at point D where is considered as
the apical part by system detecting, also the long axis (line segment CD) and the line that
traces the endocardium are displayed at the same time. Where in,
h C: Midpoint of A and B.
h D: Apical part of left ventricle.
You can:
z Adjust the long axis
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