EDAN DUS 60 - Page 61

DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual Cardiology Measurements and Calculations
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LVLs Left Ventricular Length Distance (mm)
HR Heart Rate Key in (bpm)
EDV End Diastolic Volume
EDV (mL)= (5/6)×LVLd (mm)×LVAMd (mm
2
)
/1000
ESV End Systolic Volume
ESV (mL)= (5/6)×LVLs (mm)× LVAMs (mm
2
)
/1000
SV Stroke volume SV (mL)=EDV (mL)-ESV (mL)
CO Cardiac Output CO (L/min)= SV (mL) × HR (bpm)/1000
EF Ejection fraction (B mode) EF (No unit)= SV (mL)/ EDV (mL) x 100%
SI Stroke Index SI (No unit)= SV (mL)/ BSA (m
2
)
CI Cardiac Index CI (No unit)= CO (L/min)/ BSA (m
2
)
BSA Body Surface Area Calculate by the selected formula (m
2
)
Table 8-8 Measurement and Calculation Items with Bullet Formula
4. Modified SIMPSON formula:
NOTE: d: end diastolic; s: end systolic
Label Description Method
LVAMd
Left Ventricular Fractional Area of
Mitral Valve
Ellipse Area (mm
2
, cm
2
, or dm
2
)
LVLd Left Ventricular Length Distance (mm)
LVAPd
Left Ventricular Fractional Area of
Papillary Muscles
LVAMs Left Ventricular Anterior Wall
Ellipse Area (mm
2
, cm
2
, or dm
2
)
LVLs Left Ventricular Length Distance (mm)
LVAPs
Left Ventricular Fractional Area of
Papillary Muscles
Ellipse Area (mm
2
, cm
2
, or dm
2
)
HR Heart Rate Key in (bpm)
EDV End Diastolic Volume
ESV End Systolic Volume
*1
SV Stroke volume SV (mL)=EDV (mL)-ESV (mL)
CO Cardiac Output CO (L/min)= SV (mL) x HR (bpm)/1000
EF Ejection fraction (B mode) EF (No unit)= SV (mL)/ EDV (mL) x 100%
DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual Cardiology Measurements and Calculations
- 113 -
SI Stroke Index SI (No unit)= SV (mL)/ BSA (m
2
)
CI Cardiac Index CI (No unit)= CO (L/min)/ BSA (m
2
)
BSA Body Surface Area Calculate by to the selected formula (m
2
)
Table 8-9 Measurement and Calculation Items with Modified SIMPSON Formula
*1
{
}
1000/)()()(2)(49/)()(
2222
mmLVAPdmmLVAMdmmLVAPdmmLVAMdmmLVLdmLEDV ×+×+××=
{
}
1000/)()()(2)(49/)()(
2222
mmLVAPsmmLVAMsmmLVAPsmmLVAMsmmLVLsmLESV ×+×+××=
5. Other measurement and calculation items:
Label Description Method
LVET Left Ventricular Ejection Time Time (ms)
FS Fractional Shortening
FS (No unit)={ LVIDd (mm)- LVIDs (mm)}/
LVIDd (mm) x 100%
MVCF
Mean Velocity Circumferential Fiber
Shortening
MVCF (No unit)= { LVIDd (mm)- LVIDs
(mm)}/ {LVIDd (mm) x ET (ms)/1000}
Table 8-10 Other Measurement and Calculation Items
8.2.1. LV
LV measurement is as below.
Single plane ellipse (S-P Ellipse)
z Measurement items:
LVLs, LVALs, LVLd, and LVALd
z To measure LV:
1. In the B-cardiac measurement menu, roll the trackball to highlight LV. Then select S-P
Ellipse and press Set.
2. During end systolic, measure LVLs and LVALs respectively. The system calculates and
displays the result of ESV.
3. During end diastolic, measure LVLd and LVALd respectively, in the method of generic B
mode distance measurement and generic B mode ellipse area measurement respectively. The
system calculates and displays the results of EDV, SV, and EF.
Dual plane ellipse (B-P Ellipse), Bullet, and Modified Simpson (Mod. Simpson)
The operations in these methods are similar to those in the single plane ellipse method. Please
refer to the corresponding B mode generic measure method for details, and refer to the prompt
instruction to help you.
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