P3V Veterinary Digital Ultrasonic Diagnostic Imaging System User Manual
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BSA
Body Surface Area (m
2
)
Calculate by to the selected formula
LVMW
Left Ventricular Muscle Weight
LVMW (g)=1.04*[{IVSTDd (cm)+LVIDd (cm) +
LVPWd
3
(cm)}
3
-LVIDd
3
(cm)
3
]-13.6
LVMWI
Left Ventricular Muscle Weight
Index
LVMWI (No unit)=LVMW/BSA
A/E
The ratio of CA to CE
A/E (No unit)= CA (mm)/CE (mm)
LAD/AOD
Left Atrium Diameter / Aortic
root Diameter
LAD/AOD (No unit)= LAD (mm)/AOD (mm)
AVSV
Aortic Valve Stoma Valve flow
AVSV (mL)=MAVO1 (cm)+MAVO2 (cm)*
ET (s)*50+AA (cm)
QMV
Mitral Valve Flow
QMV (mL)=4*DEV (cm/s)*DCT (s)
Table 9-4 Calculation Items
9.1.1. LV
The B/M mode and M mode measurements of LV are based on ESV and EDV, which are
calculated by LVIDs and LVIDd measurement respectively.
After measuring LVIDs and LVIDd and entering Heart Rate, LVET, and Height & Weight, the
system can calculate 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
TEICHHOLZ
EDV (mL)= 7 x LVIDd
3
(cm
3
)/{2.4 + LVIDd (cm)}
ESV (mL)= 7 x LVIDs
3
(cm
3
)/{2.4 + LVIDs (cm)}
CUBE
EDV (mL) = LVIDd
3 (
mm)
3
/ 1000
ESV (mL) = LVIDs
3 (
mm)
3
/ 1000
Table 9-5 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:
In the M-cardiac measurement menu, roll the trackball to highlight
LV
, and the secondary menu
