EDAN DUS 60 User Manual page 57

DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
Aortic Valve Volume Opened,
MAVO1
beginning
Aortic Valve Volume Opened,
MAVO2
ending
AA Aortic Amplitude
LVMW Left Ventricular Muscle Weight
Left Ventricular Muscle Weight
LVMWI
Index
A/E The ratio of CA to CE
Left Atrium Diameter / Aortic
LAD/AOD
root Diameter
AVSV Aortic Valve Stoma Valve flow
QMV Mitral Valve Flow
Table 8-3 Other Measurement Items
4. Calculation items:
Label Description
EDV End Diastolic Volume
ESV End Systolic Volume
SV Stroke volume
CO Cardiac Output
EF Ejection fraction (M mode)
FS Fractional Shortening
SI Stroke Index
CI Cardiac Index
Mean Velocity Circumferential
MVCF
Fiber Shortening
Cardiology Measurements and Calculations
Distance (mm)
LVMW (g) =1.04* ({IVSTd (cm)+LVIDd (cm)+LVPWd
3 3 3
(cm)} -LVIDd (cm) )-13.6
LVMWI (No unit) = LVMW/BSA
A/E (No unit) = CA (mm)/CE (mm)
LAD/AOD (No unit) = LAD (mm) / AOD (mm)
AVSV (mL) = MAVO1 (cm)+MAVO2 (cm)*
ET (s)*50+AA (cm)
QMV (mL) = 4*DEV (cm/s)*DCT (s)
Method
3 3
EDV (mL) = LVIDd (mm )/1000
CUBE formula
3 3
ESV (mL) = LVIDs (mm )/1000
CUBE formula
SV (mL) = EDV (mL)-ESV (mL)
CO (L/min) = SV (mL) × HR (bpm)/1000
EF (No unit) = SV (mL)/ EDV (mL) × 100%
FS (No unit) =[ {LVIDd (mm)- LVIDs (mm)}/ LVIDd
(mm) ]x 100%
2
SI (No unit)= SV (mL)/ BSA (m )
2
CI (No unit)= CO (L/min)/ BSA (m )
MVCF (No unit)= { LVIDd (mm)- LVIDs (mm)}/ {LVIDd
(mm) × ET (ms)/1000}
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DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
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BSA Body Surface Area (m )
LVMW Left Ventricular Muscle Weight
Left Ventricular Muscle Weight
LVMWI
Index
A/E The ratio of CA to CE
Left Atrium Diameter / Aortic
LAD/AOD
root Diameter
AVSV Aortic Valve Stoma Valve flow
QMV Mitral Valve Flow
Table 8-4 Calculation Items
8.1.1. LV
The B/M mode and M mode measurements of LV are based on ESV and EDV measurements,
which are calculated by LVIDs and LVIDd measurements.
After measuring LVIDs and LVIDd and entering Heart Rate, LVET, and Height & Weight, the
system calculates some physiological parameters, such as ESV, EDV, SV, EF, FS, CO, MVCF, SI,
and CI.
There are two calculation formulas for heart antrum volume in the B/M mode and the M mode, as
shown below.
Item Formula
EDV (mL)= 7 x LVIDd
TEICHHOLZ
ESV (mL)= 7 x LVIDs
3 (
EDV (mL) = LVIDd
CUBE
3 (
ESV (mL) = LVIDs
Table 8-5 TEICHHOLZ and CUBE Formula
NOTE:
Ensure that the value of LVIDd is bigger than that of LVIDs, or the system can not display
the calculation items.
SV and EF calculation is as below.
Measurement items:
LVIDs and LVIDd
To measure LV:
1. In the M-cardiac measurement menu, roll the trackball to highlight LV, and the secondary
Cardiology Measurements and Calculations
Calculate by to the selected formula
LVMW (g)=1.04*[{IVSTDd (cm)+LVIDd
3 3 3 3
LVPWd (cm)} -LVIDd (cm) ]-13.6
LVMWI (No unit)=LVMW/BSA
A/E (No unit)= CA (mm)/CE (mm)
LAD/AOD (No unit)= LAD (mm)/AOD (mm)
AVSV (mL)=MAVO1 (cm)+MAVO2 (cm)*
ET (s)*50+AA (cm)
QMV (mL)=4*DEV (cm/s)*DCT (s)
3 3
(cm )/{2.4 + LVIDd (cm)}
3 3
(cm )/{2.4 + LVIDs (cm)}
3
mm) / 1000
3
mm) / 1000
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(cm) +