General Calculations
LOGIQ 500 Basic Users Manual
2233658–100 Rev. 0
8–7
Flow Volume (FV)
Flow Volume estimates the volume of blood that flows through a
vessel per unit time. It is derived from a vessel’s
cross-sectional diameter obtained from the B-Mode portion of
the image and the mean velocity of flow in the vessel obtained
from the Doppler portion of the image. It is measured in
milliliters. When the FV measurement is made, FVO is
automatically calculated.
To measure flow volume:
Mean PG
Max PG
CO
SV
HEART
RATE
TRACE
AUTO
FVO
FV
Figure 8–4. General Calculations Sub Menu (FV)
Select FV from the Calculation Sub Menu. Place the dotted
horizontal line cursor at each of the timebase on the Doppler
spectrum.
If Trace Auto is selected, the waveform is automatically traced.
If Trace Auto is not selected, manually trace the desired portion
of the waveform.
The cursor moves to the B-Mode area.
Use the Ellipse or Trace method to measure the circumference
and area of the vessel as described on
respectively.
The flow volume (FV) is calculated and displayed in milliliters.
The flow volume output (FVO) is also calculated and displayed
in milliliters/minute.
Содержание Logiq 500
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