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Additional Cardiac Calculations
LOGIQ 500 Basic Users Manual
2276612–100 Rev. 0
10–21
Volume Calculation Formulas
Calc Name
Input Measurements
Formula
Volume (spherical)
one distance
Vol[ml]=(
p
/6)xd^3
Volume (prolate spheroidal)
two distances, d1>d2
Vol[ml]= (
p
/6)xd1xd2^2
Volume (prolate spheroidal)
one ellipse, d1 major axis, d2 minor
axis
Vol[ml]= (
p
/6)xd1xd2^2
Volume (spheroidal)
three distances
Vol[ml]= (
p
/6)xd1xd2xd3
Volume (spheroidal)
one distance d1, one ellipse, d2 ma-
jor axis, d3 minor axis
Vol[ml]= (
p
/6)xd1xd2xd3
Volume (spheroidal)
two ellipse, ellipse 1 with axes d1 and
d2, ellipse 2 with axes d3 and d4,
with |d2–d3|
|d1–d4| and d2>d3
Vol[ml]= (
p
/6)xd1xd2xd4
(d3 is not used, assuming it is close
to d2)
Table 10–7. Volume Calculation Formulas
One
distance
Two distances or
one ellipse
Three distances or one distance
and one ellipse or two ellipses
Figure 10–23. Volume Calculation Examples
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