Cardiology 6-17
Operating Procedures
1. Select [Mod.Simpson] in the measurement menu.
2. In apical long-axis view, measure the following parameters:
At end diastole: LVLd apical
At end systole: LVLs apical
3. In short-axis view at mitral valve level, measure the following parameters:
At end diastole: LVAd sax MV
At end systole: LVAs sax MV
4. In short-axis view at papillary muscle level, measure the following parameters:
At end diastole: LVAd sax PM, the EDV is calculated
At end systole: LVAs sax PM, the ESV is calculated
The system calculates SV and EF;
If height and weight have been input already, SI, EDV Index and ESV Index are calculated.
5. Using touch screen knob to select HR source: ECG or input.
The CO and CI are calculated automatically.
Simpson SP
This method includes two studies: Simp SP(A4C) and Simp SP(A2C).
Study Items
Tools Descriptions Operations
EDV(A2C/A4C)
End-diastolic Left Ventricular Volume
(apical 2-chamber/ 4-chamber)
Simpson measurement (Trace/
Spline/ Auto)
ESV(A2C/A4C)
End-systolic Left Ventricular Volume
(apical 2-chamber/ 4-chamber)
HR Heart Rate Obtained by ECG or input directly
Study Results
Tools Descriptions Formulae
EDV(Simp SP)
End-diastolic Left
Ventricular Volume
)(
20
)(apical LVLd
＝)(EDV
20
1
2
cmr
cm
ml
i
i
∑
=
××
π
LVLd apical: Left Ventricular Long-axis Length at
End-diastole in apical view, i.e. the long-axis
length obtained in measurement.
i
r
: Radiuses obtained from diastolic measurement
ESV(Simp SP)
End-systolic Left
Ventricular Volume
)(
20
)(apical LVLs
＝)(ESV
20
1
2
cmr
cm
ml
i
i
∑
=
××
π
LVLs apical: Left Ventricular Long-axis Length at
End-systole in apical view, i.e. the long-axis length
obtained in measurement.
i
r
: Radiuses obtained from systolic measurement
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